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Christchurch City Council City Plan: Summary of Rules for Residential Units in Living 1 Zone (excluding Special Amenity (SAM) areas, South Brighton Coastal Management Areas, Elderly Persons Housing, Comprehensive Housing Improvement Areas, and Deferred zones). The following is a summary of the relevant rules for construction of one or more residential units on the majority of sites within the Living 1 Zone. The wording has been extracted directly from the City Plan however it has been abridged to delete reference to zones other than Living 1 as well as some particular locations or activities for which different rules apply. This summary should therefore be used as a guide only. Please note that these rules are current to 31 March 2010. As the rules of the City Plan are subject to occasional change it is important that you check with Council Planners that this is the most up to date version of the Living 1 Zone rules. Guide to using these rules Step 1: Check that the site is zoned Living 1 and the proposal does not fall within one of the exemptions listed in the heading above. Then use the information listed below to check that the proposal complies with all of the development standards for the zone. 2.2 Development standards 2.2.1 Residential Site Density Each residential unit shall be contained within its own separate site with a minimum net area of 450m² except that: (b) for each residential unit on any fee simple title, or vacant parts of a fee simple title where there is/are existing cross-lease(s) or company leases over other parts of such titles, or for proposed units on a unit development plan, where the creation of such sites had obtained subdivision consent before the date of the notification of the District Plan (24 June 1995) or any fee simple title, cross lease, company lease or unit title which had its certificate of title issued before the date of the notification of the District Plan, there shall be no minimum net area, provided that all other applicable development standards are complied with. Step 3: Then check that the residential unit(s) complies with all of the critical standards. The applicable development standards are: • Clause 2.2 (Living 1 zone); • Part 9, Clause 5.2 (Earthworks and building close to waterways); and • Part 13, Clauses 2.2 and 2.3 (Parking, loading and access). If not, an application will need to be made for a resource consent, assessed as a discretionary activity (with the exercise of the Council’s discretion limited to the matter(s) subject to that standard). Step 2: Then check that the residential unit(s) complies with the community standard relating to building size and separation. If the activity does not comply with the community standard, an application will need to be made for a resource consent, assessed as a discretionary activity. If not, application will need to be made for a resource consent, assessed as a non-complying activity. Step 4: Check that the residential unit(s) complies with any relevant rules in other parts of the City Plan. If not, a resource consent will be required in respect of the rule(s) not complied with. If the proposal complies with all of the zone rules and general rules, it is a permitted activity and does not require a resource consent. Please note however that you will need to obtain a building consent before you can commence construction of the unit(s). If you require assistance in establishing whether your proposal complies with any of these rules please contact the Customer Centre on telephone 941-8999. Form P-350 Updated: April 2010 (c) On any fee simple title, or vacant parts of a fee simple title where there is/are existing cross-lease(s) or company leases over other parts of such titles, or for proposed units on a unit development plan, where the creation of such sites had obtained subdivision consent after the date of the notification of the District Plan (24 June 1995) and before the date of the release of decisions on the District Plan (8 May 1999) or any fee simple title, cross-lease, company lease or unit title which had its certificate of title issued between these dates, each residential unit shall be contained within its own site with a minimum net area of 420m², provided that all other applicable development standards are complied with. Christchurch City Council 2.2.4 Sunlight and Outlook for Neighbours The applicable development standards are: • Clause 2.2 (Living 1 zone); • Part 9, Clause 5.2 (Earthworks and building close to waterways); and (a) • Part 13, Clauses 2.2 and 2.3 (Parking, loading and access). (Refer also to subdivision rules in Part 14 for further crossleases which require subdivision consent.) Buildings shall not project beyond a building envelope constructed by recession planes from points 2.3m above internal boundaries as shown in Part 2, Appendix 1 (see diagrams on page 8). except that: (Definition of “Net Area” – in relation to a site or allotment, means the total area of the site or allotment less any area subject to a designation for any purpose, and/or any strip of land 6m or less in width, and/or any strip of land where that land is the shared access for more than one site). (ii) where an internal boundary of a site abuts an access lot or access strip the recession plane may be constructed from points 2.3m above the furthest boundary of the access lot or access strip or any combination of these areas; (iii) where buildings on adjoining sites have a common wall along an internal boundary the recession planes shall not apply along that part of the boundary covered by such a wall. 2.2.2 Open Space (b) (Refer also to critical standards for residential site density – clause 2.4.1.) The maximum percentage of the net area of any site covered by buildings shall be as follows: 35% With garage provided Without garage provided 35% less 18m² The level of internal boundaries shall be measured from filled ground level except where the site on the other side of the internal boundary is at a lower level, then that lower level shall be adopted. 2.2.5 Street Scene except that: (a) where the height of all buildings on the site does not exceed 5.5 metres and is of a single storey the maximum shall be 40%. except that: (Refer also to critical standards for open space – clause 2.4.3.) 2.2.3 Building Height (ii)where a garage has the vehicle door generally facing a road or shared access the minimum garage setback shall be 5.5m from the road boundary or shared access. (c) Maximum height of any building shall be 8m. (Refer also to critical standards for building height – clause 2.4.4.) (Definition of “Height” - in relation to a building means the vertical distance between ground level at any point and the highest part of the building immediately above that point. For the purpose of calculating height in all zones, account shall be taken of parapets, but not of: (a) Minimum building setback from road boundaries shall be 4.5m Parking and outdoor storage areas shall be screened from adjoining road(s) by either landscaping, wall(s), fence(s) or a combination, except across those parts of the road boundary used as a vehicle crossing. (i)The minimum height of screening shall be 1.2m. (ii)Where the screening is by way of landscaping, the minimum height shall be the minimum height at the time of planting (1.2m). (iii) Where screening is by way of landscaping it shall be for a minimum depth of 1.5m along the road frontage(s). radio and television aerials attached to a residential unit, provided that the maximum height normally permitted by the rules for the zone is not exceeded by more than 2.5m; and 2.2.6 Separation from Neighbours (b) finials provided that the maximum height normally permitted by the rules for the zone is not exceeded by more than 1.5m. Minimum building setback from internal boundaries shall be 1.8m (d) chimneys, not exceeding 1.1m in any direction. except that: (e) any utility or part of a utility with a horizontal dimension of less than 55mm.) (a) (Definition of “Ground level” – shall be taken as the level of the ground existing when works associated with any prior subdivision of the land were completed, but before filling or excavation for new buildings on the land has commenced.) Form P-350 Updated: April 2010 accessory buildings may be located within 1.8m of internal boundaries where the total length of walls or parts of accessory buildings facing, and located within 1.8m of each internal boundary does not exceed 9m in length; (b) where an internal boundary of a site immediately adjoins an access or part of an access, the minimum 2 Christchurch City Council building setback (except accessory buildings) from that internal boundary shall be 1m; at least 2m, or a vertical step of at least 1m. The minimum length of all steps shall be 6m. (c) except that: (d) (e) (h) where buildings on adjoining sites have a common wall along an internal boundary, no set back is required along that part of the boundary covered by such a wall; for residential activities any part of any balcony or any window of a living area at first floor level or above shall not be located within 4m of any internal boundary. This shall not apply to a window at an angle of 90° or greater to the boundary (see diagram on page 8). First floor level shall not include a window or balcony which begins within 1.2m of ground level, such as above a garage which is partly below ground level. for residential activities, where a window of a living area of a residential unit faces an internal boundary, the window shall be set back a minimum of 3m from the internal boundary. Where an internal boundary of a site immediately adjoins an access or part of an access, the setback shall be 1m measured from that internal boundary. This shall not apply to a window at an angle of 90° or greater to the boundary; (i)This rule shall not apply to any part of a ridgeline and/or horizontal parapet which is more than 10m from every internal boundary and more than 6m from every road boundary. (ii)Where a step occurs within 6m of the end of the ridgeline and/or horizontal parapet at the end building, the length of that step need only equal the remaining length of the ridgeline and/or horizontal parapet. For further clarification of this rule refer to Appendix 1A and the definitions of step, length and ridgeline (see attached diagrams and definitions on page 9). 2.2.8 Continuous Building Length exterior walls (a) in the Living 1 zone at Russley Road/Memorial Avenue where its eastern boundary abuts the western boundary of the Business 4T Zone the minimum setback from the eastern boundary of the Living 1 zone where it abuts the Business 4T Zone shall be 5m. (Definition of “Accessory Building” – means a building, which is separate from the principal building or buildings on the site, the use of which is incidental to the use of the principal building or buildings on the site or (where there is no principal building) the use of the site. In respect of land used for residential activity “accessory building” extends to include a sleepout (but not a family flat) garage or carport (whether free standing or attached to any other building), shed, glasshouse, fence, swimming pool, or similar structure.) (Definition of “Balcony” – means a structure which is part of a building, above ground floor level, roofed or unroofed and completely open to the weather on at least one side, except for a balustrade. The structure must have direct and reasonable access to the residential unit which it serves.) (Definition of “Window” – means a glazed section in any plane where the sill is closer than 1.6 metres vertically from the floor.) (Definition of “Living Area” – means any room in a residential unit other than a room used principally as a bedroom, laundry, bathroom or toilet.) 2.2.7 Continuous Building Length ridgelines and parapets No length of any ridgeline/s and/or horizontal parapet/s of a building, or buildings separated by a length of less than 3.6m (from ridgeline and/or parapet to ridgeline and/ or parapet), combined with the length of any distance/s between the ridgeline/s and/or horizontal parapet/s shall exceed 20m without providing either a horizontal step of Form P-350 Updated: April 2010 (b) Steps shall be provided along the length of exterior walls in accordance with the following table: Length of exterior wall Minimum number of steps ≤ 20m 0 >20m ≤24m 1 >24m ≤28m 2 >28m ≤32m 3 >32m 4 + 1 for every additional 10m of length over 32m Where steps are required by (a) above: (i)One step shall have a minimum depth of 2m. Any steps required thereafter shall have a minimum depth of 1m. (ii)One step shall have a minimum length of 2m. Any steps required thereafter shall have a minimum length of 4m. (iii) No length of any exterior wall shall exceed 20m without a step of the required dimension having commenced. (iv) The required steps shall be provided at all levels of the exterior wall. except that: (i)This rule shall not apply to any part of an exterior wall which is more than 10m from every internal boundary and more than 6m from every road boundary. (ii)Where no part of a building exceeds 5.5m in height, this rule shall not apply to any exterior wall of less than 28m in length. For further clarification of this rule refer to Appendix 1A and the definitions of step, depth and length (see attached diagrams and definitions on page 10). 3 Christchurch City Council 2.2.10 Outdoor Living Space 2.4 Critical Standards (a) Each residential unit shall be provided with an outdoor living space in a continuous area, contained within the net area of the site with a minimum area of 90m² and minimum dimension of 6m. 2.4.1 Residential Site Density The required minimum area shall be readily accessible from a living area of each unit. At least half of the required minimum area shall be able to receive sunshine at midday on the shortest day of the year. except that: (b) Each residential unit shall be contained within its own separate site with a minimum net area of 420m2 (a) for each residential unit on any fee simple title, or vacant parts of a fee simple title where there is/are existing cross-lease(s), or company leases over other parts of such titles, or for proposed units on a unit development plan, where the creation of such sites had obtained subdivision consent before the date of the notification of the District Plan (24 June 1995) or any fee simple title, cross lease, company lease or unit title which had its certificate of title issued before the date of the notification of the District Plan, there shall be no minimum net area, provided that all other applicable critical standards in Clause 2.4 are complied with. (Refer also to subdivision rules in Part 14 for further cross-leases which require subdivision consent.) (b) on any fee simple title, or vacant parts of a fee simple title where there is/are existing cross-lease(s) or company leases over other parts of such title, or for proposed units on a unit development plan, where the creation of such sites had obtained subdivision consent after the date of the notification of the District Plan (24 June 1995) and before the date of the release of decisions on the District Plan (8 May 1999) or any fee simple title, cross lease, company lease or unit title which had its certificate of title issued between these dates, each residential unit shall be contained within its own separate site with a minimum net area of 330m², provided that all other applicable critical standard in Clause 2.4 are complied with. (Refer also to subdivision rules in Part 14 for further cross-leases which require subdivision consent). (c) where at least 8 residential units are to be erected on a site and at least 60% of the open space associated with all the units is permanently and legally available for use by the residents of all units, the minimum net area per residential unit may be averaged over the total site containing all residential units (note: at the time of subdivision of such residential units a consent notice pursuant to Section 221 Resource Management Act 1991 will be imposed on the titles to ensure that all open space remains available for all residents). Note for clarification: This rule only applies to structures on the same site. (c) The required minimum area shall not be occupied by any building, access or parking space, other than: • an outdoor swimming pool; or • accessory building of less than 8m²; or • any buildings or parts of a building without walls (other than a balustrade) on at least a quarter of its perimeter, and occupies no more than 30% of the area of the outdoor living space. 2.2.11 Family Flats Family flats shall have a maximum gross floor area, excluding terraces, garages, sundecks and verandahs, of 65m². Once the building is no longer being used as a family flat, and where the family flat does not comply with all the standards for a residential unit: (a) The family flat shall be relocated from the site; or (b) shall have the kitchen removed so that the family flat is no longer a self-contained residential unit. (Definition of “Family Flat” – means self-contained living accommodation, whether contained within a residential unit or located separately to a residential unit on the same site, which is occupied by family member(s) who are dependant in some way on the household living in that residential unit; and which is encumbered by an appropriate legal instrument which ensures that the use of the family flat is limited to dependant family members of the household living in the residential unit.) 2.3 Community Standards 2.3.6 Building Size and Separation (a) (b) The maximum gross floor area of any single building shall be 550m2 except that this area may be exceeded where the activity is located in a community footprint. Where buildings located on the same site each have a gross floor area of greater than 100m2, they shall be separated from each other by not less than 3.6m, except where the activity is located in a community footprint. 2.4.3 Open Space The maximum percentage of the net area of any site covered by buildings shall be: With garage provided Without garage provided 40% 40% less 18m² (Refer also to development standards for open space – clause 2.2.2) Form P-350 Updated: April 2010 4 Christchurch City Council 2.4.4 Building Height The maximum height of any building shall be 9m. (Refer also to development standards for building height – clause 2.2.3) 2.4.7 Special Setback Provisions (a) In that part of the Living 1 Zone which is: Each residential unit shall provide 2 parking spaces (1 of which must be garageable) within the site. Additional spaces shall be provided for visitors at the rate of one space per 5 units on the site. 2.2.8 Manoeuvre Areas All on-site manoeuvre areas shall be designed to accommodate at least a 90 percentile design motor car, as shown in Appendix 4, unless otherwise specified. (i) Adjacent to the proposed expressway between Travis Road and New Brighton Road; 2.2.9 Parking Spaces (ii) Adjacent to State Highway 73 (Southern Motorway) between Annex and Curletts Roads; (a) (iii) Adjacent to State Highway 75 (Curletts Road) between the intersection with State Highway 73 and Lincoln Road; Width Depth Building setbacks, or building location, or acoustic barriers, or other means, either singly or in combination shall be used such that the following noise insulation standards are met: Sound levels attributable to traffic from these roads shall not exceed a level of 57 dBA L10 (18 hour) 54 dBA Leq (24 hour) in any outdoor area of the site and a design level of 60 dBA L10 (18 hour 57 dBA Leq (24 hour) measured 1 metre from the facade of any residential unit. All measured in accordance with NZS 6801:1991 Assessment of Sound. (b)In that part of the Living 1 Zone at Styx Mill (as shown on Appendix 3f) residential units shall be set back at least 40m from Johns Road or Main North Road, and at least 25m from the terrace edge along the boundary with the Styx Mill Reserve. In addition, a 5m strip of flax and other suitable dense vegetation shall be established within the Living zone along its boundary with the Styx Mill Reserve, and also along the terrace face with a predator proof fence at the base of the terrace, at the expense of the developer. The planting and fencing along the Styx Mill Reserve boundary shall be completed before any residential units are built. (c)In the Living 1 Zone (at North Beach) the minimum building setback from the boundary with the Living 4B (North Beach) Zone shall be 20m. Single 3.1m 5.5m Double 5.6m 5.5m except where the parking spaces are provided in a multi-bay garage with no physical separation between spaces, in which case they may be laid out in accordance with the table in Appendix 1 of Section 13. (b) The minimum width of the entrance to a single garage shall be 2.4m. (c) All other parking spaces shall have a minimum dimension of 2.5m in width and 5m in depth. (d) The minimum widths of parking spaces shall be increased by 300mm where there is a permanent obstruction such as a wall on one side of the parking space. Where there is such an obstruction on both sides of a parking space the minimum width shall be increased by 600mm. (e) The manoeuvre area to and from the site access to the parking space shall be designed to accommodate at least a 90 percentile design motor car as set out in Appendix 4. (f) Where two parking spaces are required by Clause 2.2.1 for a residential activity (other than visitor spaces), they may be provided in tandem where on site manoeuvring is provided. 2.4.9 Aircraft Noise Exposure Any new residential unit which is within the 55 dBA Ldn outer control boundary shown on the planning maps, shall be insulated from the aircraft noise so as to comply with the provisions of Part 4, Appendix 1 (copy available from the Council). This rule shall apply only to any site fully within the 55 dBA Ldn outer control boundary. Garageable parking spaces shall have the following minimum internal dimensions: 2.2.10 Parking Area and Access Design All vehicular access to a site shall be in accordance with the following standards: Potential # of units Legal width (m) 2.2 Development Standards Parking and loading 1 to 3 3.0 2.7 (1) No (2) 3.5 4 to 8 4.0 3.5 Yes Yes Yes 4.0 2.2.1 9 to 15 6.0 5.0 Yes Yes Yes 4.0 Part 13: Transport Parking Space Numbers Form P-350 Updated: April 2010 Formed Turning Passing Sealed width area area and (m) drained Height (m) 5 Christchurch City Council (1) See Rule 2.2.13 for when turning area required. (2) Depends on gradient of access. limit is 100km/h, the minimum spacing between successive accesses shall be 200 metres. (b) For all other sites the minimum distance between access on one site shall be 7.5 metres. 2.2.13 On-site Manoeuvring (a) On-site manoeuvring shall be provided to ensure that no vehicle is required to reverse either onto or off a site where: (i) Any site has access to a major or minor arterial road; or (ii) Any site has access to a collector road and requires three or more parking spaces; or (iv) Any access to a site serves six or more parking spaces; or (v) Any residential activity provides tandem parking. (b) (c) Vehicles shall not be required to undertake more than one reverse manoeuvre when manoeuvring out of any required parking or loading space. Queuing space with a minimum length of 5.5m shall be provided on site for all vehicles entering or exiting a parking area. Queuing space length shall be measured from the road boundary to the nearest vehicle control point or point where conflict with vehicles already on the site may arise. 2.2.16 Surface of Parking and Loading Areas The surface of all parking, loading, and associated access areas (except parking areas for residential activities requiring less than three spaces) shall be formed, sealed and drained and parking spaces permanently marked. 2.3 Development Standards – Site Access Length of Vehicle Crossings The maximum and minimum vehicle crossing lengths shall be as follows: Minimum Maximum 3.5m 6m The length of a vehicle crossing shall be measured as the actual length of channel covers or the length of the fully dropped kerb. 2.3.4 Minimum distance between vehicle crossings (a) For sites with frontage to a road where the speed Form P-350 Updated: April 2010 Maximum number of vehicle crossings The maximum number of vehicle crossings permitted on each road frontage of any site or comprehensive development shall be in accordance with the following: Frontage length (m) Parking spaces shall be located so as to ensure that no vehicle is required to carry out any reverse manoeuvring when moving from any vehicle access to any required parking spaces. 2.2.14 Queuing Spaces 2.3.3 2.3.5 Type of road frontage Local and Collector Minor arterial Major arterial 0 – 16 1 1 1 >16 – 60 2 1 1 >60 – 100 2 2 1 >100 3 2 2 2.3.6 Distances of vehicle crossings from intersections Any part of any vehicle crossing shall not be located closer to the intersection of any roads than the distances specified below: Intersecting road type (Distance in metres) Frontage Road Major arterial Minor arterial Collector Local and Service Major arterial 60 45 30 25 Minor arterial 45 45 30 25 Collector 30 30 30 10 Local and Service 15 15 15 10 1. Distances shall be measured along the boundary parallel to the centre line of the roadway of the frontage road from the kerb line, or formed edge, of the intersecting road. 2. Where the boundaries of a site do not allow the provision of any vehicle crossing whatsoever in conformity with the above distances, a single vehicle crossing may be constructed in the position which most nearly complies with the provisions of the above table. Note: The classification of roads is contained in Part 8, Appendix 3 of the City Plan. 6 Christchurch City Council Reference to other standards Please note that in addition to the rules for the Living 1 Zone, your proposal will also need to comply with all of the general rules contained in the City Plan. These include: a) Eaves may intrude up to 0.6 metres into the setback. b) A porch, windbreak, chimney, external stairway, landing or unenclosed balcony up to 1.8 metres in length, may intrude into the setback for up to 0.8 metres, provided that any one of these features intrudes only once into each setback of each building. Intrusions by these features may occur in combination, for example, one setback can be intruded by both a chimney and a porch. • Clarification of rules (refer Part 9, Clause 2) (See relevant clauses attached below) • Excavation and filling of land, and building near waterways (Part 9, Clause 5) • Protected buildings, places and objects (Part 10, Clause 1) • Protected trees (Part 10, Clause 2) • Outdoor advertising (Part 10, Clause 3) • Relocated buildings (Part 10, Clause 6) • Subdivision (Part 14) Part 9 - General City Rules Clarification of rules Permitted recession plane intrusions (Clause 2.4.2) Where a rule in this plan requires buildings to comply with recession planes as shown in Part 2, Appendix 1 (see diagrams on page 7) the following features may intrude through the recession plane within the limits specified. (i) chimneys, ventilation shafts, spires, poles and masts (where poles and masts are less than 9m above ground level), provided that the maximum dimension thereof parallel to the boundary for each of these structures shall not exceed 1m and provided that for buildings over three storeys, such features are contained within or are sited directly against the outside structural walls; and (ii) lift shafts, stair shafts, and roof water tanks provided that there is a maximum of one intrusion of a lift shaft or stair shaft or roof water tank (or structural incorporating more than one of these) permitted for every 20 metre length of internal boundary, and the maximum dimension thereof parallel to the boundary for this structure shall not exceed 3m, and provided that the minimum distance between each of these structures shall be 20m, and provided that for buildings over three storeys, such features are contained within or are sited directly against the outside structural walls; and (iii) where a single gable end with a base (excluding eaves) of 7.5 metres or less faces a boundary and a recession plane strikes no lower than half way between the eaves and ridge line, the gable end may intrude the recession plane. Permitted open space intrusions (Clause 2.5.2) Where a rule in this Plan requires compliance with open space standards the following features are excluded: • Fences, walls and retaining walls; • Eaves and roof overhangs up to 600mm in width from the wall of a building; • Uncovered swimming pools up to 800mm in height above ground level; and • Decks, terraces, balconies, porches, verandahs, bay or box windows (supported or cantilevered) which: - Are no more than 800mm above ground level and are uncovered or unroofed; or - Where greater than 800mm above ground level and / or covered or roofed, are in total no more than 6m² in any area for any one site. Permitted setback intrusions (Clause 2.3.2) Where a rule in this Plan requires buildings to be setback a minimum distance from a boundary the following features of a building may intrude into the setback to the limits specified. Form P-350 Updated: April 2010 7 Christchurch City Council Diagram relevant to Clause 2.2.6(d) on page 3: Recession Plane Diagrams: Applicable to all buildings in living 1 zones and all buildings in adjoining zones A Applicable to all buildings: • In the L1 zones • On sites in other (non-living) zones that adjoin the L1 zones Form P-350 Updated: April 2010 8 Christchurch City Council Continuous Building Length – ridgelines and parapets: Definitions: Length: Means the maximum dimension of any: • Step; • Ridgelines and/or parapet of a building; • Distance between buildings; or • Distance between ridgeline(s) and/or horizontal parapet(s) as measured along each elevation of the building. For the purpose of the ‘Continuous building length – exterior walls’ rules, means the maximum dimension of any step or exterior wall of a building as measured along each elevation of the building, except: Where buildings on the same site are separated by a distance of less than 3.6m (as measured from exterior wall to exterior wall), the length shall be the combined maximum dimension of all the exterior walls, including any distance between them. Ridgeline: Means any horizontal line which results from the intersection of two road surfaces which slope upwards towards each other. Where any part of a roof is flat, mono-pitched, butterfly or barrel shaped the ridgeline of that part of the roof shall be the highest horizontal line as indicated in any elevation of the building. Step: Means a change in the line of a ridgeline and/or parapet. A horizontal step is a step inwards or outwards in the plan view of the building. A vertical step is a step upwards or downwards in an elevation of a building. Form P-350 Updated: April 2010 9 Christchurch City Council Continuous Building Length – exterior walls: Definitions: Depth: The depth of a step in an exterior wall shall be measured at right angles to the exterior wall from which it is being measured. Length: Means the maximum dimension of any step or exterior wall of a building as measured along each elevation of the building, except: Where buildings on the same site are separated by a distance of less than 3.6m (as measured from exterior wall to exterior wall), the length shall be the combined maximum dimension of all the exterior walls, including any distance between them. Step: Form P-350 Updated: April 2010 Means a change in the line of an exterior wall or a distance between two buildings on the same site. 10