ABCB Housing Provisions
Search the National Construction Code editions
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

Filter

Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

9.2

Part 9.2 Fire separation of external walls

Part 9.2 Fire separation of external walls

NCC Blurbs

An external wall of a Class 1 building, and any openings in that wall, must comply with 9.2.3 if the wall is less than—

  1. 900 mm from an allotment boundary other than the boundary adjoining a road alignment or other public space; or
  2. 1.8 m from another building on the same allotment other than an appurtenant Class 10 building associated with the Class 1 building or a detached part of the same Class 1 building; or
  3. 3 m from a brush fence.
NCC Title

External walls of Class 1 buildings

NCC State
SA
NCC Variation Type
Replacement
NCC SPTC Current
External walls of Class 1 buildings

An external wall of a Class 1 building, and any openings in that wall, must comply with 9.2.3 if the wall is less than—

  1. 900 mm from an allotment boundary other than the boundary adjoining a road alignment or other public space; or
  2. 1.8 m from another building on the same allotment other than a Class 10 building associated with the Class 1 building or a detached part of the same Class 1 building.

(1) The distance from any point on an external wall of a building to an allotment boundary or another building is the distance to that point measured along a line at right angles from the allotment boundary or external wall of the other building which intersects that point without being obstructed by a wall complying with 9.2.3.

(2) Where a wall within a specified distance is required to comply with 9.2.3, only that part of the wall (including any openings) within the specified distance need be constructed in that manner (see Figure 9.2.2a, Figure 9.2.2b and Figure 9.2.2c).

(3) Where the distance measured is between attached or detached buildings of different heights, the distance must be taken from the external wall with the highest elevation measured at right angles to a point that intersects the nearest part of a vertical projection above the adjacent building, excluding any eave overhang (see Figure 9.2.2d and Figure 9.2.2e).

SA 9.2.2 Measurement of distances2019: 3.7.2.3

Insert SA subclause 9.2.2(4) in clause 9.2.2 as follows:

(4) The distance from any point on an external wall of a building to a brush fence is measured in any direction from the external wall.

Figure 9.2.2a Walls at right angles to the boundary
image-9-2-2a-walls-at-right-angles-to-the-boundary.svg
Figure Notes
  1. No protection required for the wall at right angles or more to the boundary.
  2. For protection of encroachments refer to 9.2.9.
Figure 9.2.2b Measurement of distances — Full wall protection (Plan view)
image-9-2-2b-measurement-of-distances-full-wall-protection-plan-view.svg
Figure Notes

Setback distance is measured at right angles to the boundary.

Figure 9.2.2c Measurement of distances — Part walls protection (Plan view)
image-9-2-2c-measurement-of-distances-part-wall-protection-plan-view.svg
Figure Notes

Setback distance is measured at right angles to the boundary.

Figure 9.2.2d Measurement of distance — Buildings of different heights — Class 1 buildings on same allotment
image-9-2-2d-measurement-distance-buildings-different-heights-class-1-buildings-same-allotment.svg
Figure 9.2.2e Measurement of distance — Buildings of different heights — Attached Class 1 buildings on same allotment
image-9-2-2e-measurement-distance-buildings-different-heights-attached-class-1-buildings-same-allotment.svg

(1) An external wall (including a gable) required to be fire-resisting (referred to in 9.2.1 or 9.2.4) must—

  1. commence at the footings or ground slab, except where the external wall commences above a separating wall complying with 9.3.1 (see Figure 9.2.2e); and
  2. extend to—
    1. the underside of a non-combustible roof covering, except that a wall may terminate not more than 200 mm from the underside of a non-combustible roof covering, where the area between the external wall and underside of the roof covering is sealed with a non-combustible fascia, gutter or flashing; or
    2. the underside of a non-combustible eaves lining (See Figures 9.2.3a and b); and
  3. be constructed in accordance with (2).

(2) A wall required by (1) must—

  1. have an FRL of not less than 60/60/60 when tested from the outside; or
  2. be of masonry-veneer construction in which the external masonry veneer is not less than 90 mm thick; or
  3. be of masonry construction not less than 90 mm thick.

(3) Openings in external walls required to be fire-resisting (referred to in 9.2.1 or 9.2.4) must be protected by—

  1. non-openable fire windows or other construction with an FRL of not less than –/60/–; or
  2. self-closing solid core doors not less than 35 mm thick.

(4) The requirements of (3) do not apply to a window in a non-habitable room that is located adjacent to and not less than 600 mm from the boundary of an adjoining allotment or 1.2 m from another building on the same allotment provided that—

  1. in a bathroom, laundry or toilet, the opening has an area of not more than 1.2 m2; or
  2. in a room other than one referred to in (a), the opening has an area of not more than 0.54 m2 and—
    1. the window is steel-framed, there are no opening sashes and it is glazed in wired glass; or
    2. the opening is enclosed with translucent hollow glass blocks.

(5) Subfloor vents, roof vents, weepholes, control joints, construction joints and penetrations for pipes, conduits and the like need not comply with (3).

Figure 9.2.3a Typical construction of external walls
image-9-2-3a-typical-construction-of-external-walls.svg
Figure Notes
  1. The external wall is deemed to extend to the underside of non-combustible roof covering, or non-combustible eaves lining, when constructed as shown.
  2. Where sarking is installed it must be located so that ponding of water is avoided between the fascia and the first roofing batten.
  3. The location of flashing and framing is indicative only.
  4. Masonry shown in diagram (b) is to be terminated in accordance with 9.2.3(1)(b).
Figure 9.2.3b Typical construction of external walls — attached Class 1 buildings on the same allotment
image-9-2-3b-typical-construction-of-external-walls-attached-class-1-buildings-on-the-same-allotment.svg
Figure Notes
  1. The external wall is deemed to extend to the underside of non-combustible roof covering, or non-combustible eaves lining, when constructed as shown.
  2. Where sarking is installed it must be located so that ponding of water is avoided between the fascia and the first roofing batten.
  3. The location of flashing and framing is indicative only.
  4. Masonry shown in diagram (b) is to be terminated in accordance with 9.2.3(1)(b).

Explanatory information

(1) A Class 1 building must be protected by a method in—

  1. 9.2.5 where a Class 10a building is located between or adjacent to a Class 1 building and a boundary alignment that is not a boundary with a road alignment or other public space; or
  2. 9.2.6 where a Class 10a building is located between or adjacent to a Class 1 building it is associated with and another building on the same allotment; or
  3. 9.2.7 where two or more Class 10a buildings on the same allotment are located between and are associated with different Class 1 buildings.

(2) A Class 10a building must not significantly increase the risk of spread of fire between Class 2 to 9 buildings.

SA 9.2.4 Class 10a buildings2019: 3.7.2.5

Insert SA subclause 9.2.4(3) in clause 9.2.4 as follows:

(3) A carport or verandah may have timber posts and timber roof support beams regardless of their distance from the boundary.

SA 9.2.4 Class 10a buildings2019: 3.7.2.5

Insert SA subclause 9.2.4(4) in clause 9.2.4 as follows:

(4) A Class 10b brush fence must not be constructed within 3 m of a Class 1 building unless any part of the building within 3 m of the brush fence complies with the fire-resisting requirements of 9.2.1, 9.2.2, 9.2.3 and 9.2.9.

Explanatory information

9.2.4(1)(a) ensures that when a Class 10 building is located between an allotment boundary and a Class 1 building or another building on the same allotment, either directly or indirectly, that the Class 1 building be protected by a wall with an FRL.

The intention is to prevent the spread of fire from an allotment boundary (fire source feature) to a Class 1 building via a Class 10a building. Where a Class 10a building is not sited directly and wholly between the allotment boundary and the Class 1 building (see 9.2.5), the potential of fire spreading from the allotment boundary to the Class 1 still exists. Therefore, fire separation would be required.

9.2.4 does not apply to a boundary that adjoins a road or public space such as parklands, lakes, rivers and the like where the construction of buildings is unlikely.

The following methods are acceptable for the protection of a Class 1 building where a Class 10a building is located between or adjacent to a Class 1 building and a boundary alignment that is not a boundary with a road alignment or other public space:

  1. The Class 10a building is not less than 900 mm from the allotment boundary, other than the boundary adjoining a road alignment or other public space, as shown in Figure 9.2.5a.
  2. An external wall of the Class 10a building which is less than 900 mm from an allotment boundary, other than the boundary adjoining a road alignment or other public space, complies with 9.2.3 as shown in Figure 9.2.5b.
  3. An external wall of the Class 10a building, which is less than 900 mm from the Class 1 building, complies with 9.2.3 as shown in Figure 9.2.5c.
  4. The Class 1 building is not less than 900 mm from the Class 10a building, as shown in Figure 9.2.5d.
  5. An external wall of the Class 1 building, which is less than 900 mm from the Class 10a building, complies with 9.2.3, as shown in Figure 9.2.5e.
  6. An external wall of the Class 10a building which is less than 900 mm from an allotment boundary other than the boundary adjoining a road alignment or other public space, complies with 9.2.3, as shown in Figure 9.2.5f.
  7. An external wall of the Class 10a building, which is less than 900 mm from the external wall of the Class 1 building, complies with 9.2.3, as shown in Figure 9.2.5g.
  8. An external wall of the Class 1 building, which is less than 900 mm from a Class 10a building that is situated less than 900 mm from an allotment boundary, complies with 9.2.3, as shown in Figure 9.2.5h.
  9. The external wall of the Class 1 and Class 10a building which are less than 900 mm from an allotment boundary, other than the boundary adjoining a road alignment or other public space, complies with 9.2.3 as shown in Figure 9.2.5i.
Figure 9.2.5a Class 10a building 900 mm from allotment boundary
image-9-2-5a-class-10a-building-900-mm-from-allotment-boundary.svg
Figure 9.2.5b External wall to Class 10a building with FRL (method 1)
image-9-2-5b-external-wall-to-class-10a-building-with-FRL-method-1.svg
Figure 9.2.5c External wall to Class 10a building with FRL (method 2)
image-9-2-5c-external-wall-to-class-10a-building-with-FRL-method-2.svg
Figure 9.2.5d 900 mm separation between buildings
image-9-2-5d-900-mm-separation-between-buildings.svg
Figure 9.2.5e Class 1 building with FRL to external wall
image-9-2-5e-class-1-building-with-FRL-to-external-wall.svg
Figure 9.2.5f External wall of adjacent Class 10a building with FRL (method 1)
image-9-2-5f-external-wall-of-adjacent-class-10a-building-with-FRL-method-1.svg
Figure 9.2.5g External wall of adjacent Class 10a building with FRL (method 2)
image-9-2-5g-external-wall-of-adjacent-class-10a-building-with-FRL-method-2.svg
Figure 9.2.5h Class 1 building with FRL to external wall
image-9-2-5h-class-1-building-with-FRL-to-external-wall.svg
Figure 9.2.5i External wall to Class 10 building with FRL
image-9-2-5i-external-wall-to-class-10a-building-with-FRL.svg

The following methods are acceptable for the protection of a Class 1 building where a Class 10a building is located between or adjacent to a Class 1 building it is associated with and another building on the same allotment:

  1. The Class 10a building is not less than 1.8 m from the other building, as shown in Figure 9.2.6a.
  2. An external wall of the Class 10a building, which is less than 1.8 m from the other building, complies with 9.2.3, as shown in Figure 9.2.6b.
  3. An external wall of the Class 10a building, which is less than 1.8 m from the Class 1 building, complies with 9.2.3, as shown in Figure 9.2.6c.
  4. The Class 1 building is not less than 1.8 m from the Class 10a building, as shown in Figure 9.2.6d.
  5. An external wall of the Class 1 building, which is less than 1.8 m from the Class 10a building, complies with 9.2.3, as shown in Figure 9.2.6e.
  6. An external wall of the Class 10a building, which is less than 1.8 m from the external wall of the other building, complies with 9.2.3, as shown in Figure 9.2.6f.
  7. An external wall of the Class 10a building, which is less than 1.8 m from the external wall of the Class 1 building, complies with 9.2.3, as shown in Figure 9.2.6g.
  8. An external wall of the Class 1 and 10a building, which is less than 1.8 m from the external wall of the other building, complies with 9.2.3, as shown in Figure 9.2.6h.
Figure 9.2.6a Class 10a building 1.8 m from other building on allotment
image-9-2-6a-class-10a-building-1-8-m-from-other-building-on-allotment.svg
Figure 9.2.6b External wall to Class 10a building with FRL (method 1)
image-9-2-6b-external-wall-to-class-10a-building-with-FRL-method-1.svg
Figure 9.2.6c External wall to Class 10a building with FRL (method 2)
image-9-2-6c-external-wall-to-class-10a-building-with-FRL-method-2.svg
Figure 9.2.6d 1.8 m separation between Class 1 and 10a
image-9-2-6d-1-8-m-separation-between-class-1-and-10a-buildings.svg
Figure 9.2.6e Class 1 building with FRL to external wall
image-9-2-6e-class-1-building-with-FRL-to-external-wall.svg
Figure 9.2.6f External wall of adjacent Class 10a building with FRL (method 1)
image-9-2-6f-external-wall-of-adjacent-class-10a-building-with-FRL-method-1.svg
Figure 9.2.6g External wall of adjacent Class 10a building with FRL (method 2)
image-9-2-6g-external-wall-of-adjacent-class-10a-building-with-FRL-method-2.svg
Figure 9.2.6h Class 1 and 10 building with FRL to external wall
image-9-2-6h-class-1-and-10-building-with-FRL-to-external-wall.svg

The following methods are acceptable for the protection of a Class 1 building where two or more Class 10a buildings on the same allotment are located between and are associated with different Class 1 buildings:

  1. Each Class 10a building must be separated from each other by a distance of not less than 1.8 m, as shown in Figure 9.2.7a.
  2. Each Class 10a building must be separated from each other by external walls complying with 9.2.3, as shown in Figure 9.2.7b.
  3. Each Class 10a building must be separated from each Class 1 building by a distance of not less than 900 mm, as shown in Figure 9.2.7c.
  4. Each Class 10a building must be separated from each Class 1 building by external walls complying with 9.2.3, as shown in Figure 9.2.7d.
  5. Each Class 10a building must be separated by a wall complying with 9.3.1, as shown in Figure 9.2.7e.
  6. Each Class 10a building must be separated from each other by external walls complying with 9.2.3, as shown in Figure 9.2.7f.
  7. Each Class 10a building must be separated from each Class 1 building by external walls complying with 9.2.3, as shown in Figure 9.2.7g.
  8. Each Class 10a building must be separated by a wall complying with 9.3.1, as shown in Figure 9.2.7h.
Figure 9.2.7a 1.8m separation between Class 10a buildings
image-9-2-7a-1-8-m-separation-between-class-10a-buildings.svg
Figure 9.2.7b External wall to Class 10a building with FRL (method 1)
image-9-2-7b-external-wall-to-class-10a-building-with-FRL-method-1.svg
Figure 9.2.7c 900 mm separation between Class 10a and Class 1 buildings
image-9-2-7c-900-mm-separation-between-class-10a-and-class-1-buildings.svg
Figure 9.2.7d External wall to a Class 10a buildings with FRL (method 2)
image-9-2-7d-external-wall-to-class-10a-building-with-FRL-method-2.svg
Figure 9.2.7e Class 10a buildings with FRL to separating wall (method 1)
image-9-2-7e-class-10a-buildings-with-FRL-to-separating-wall-method-1.svg
Figure 9.2.7f External wall to adjacent Class 10a buildings with FRL (method 1)
image-9-2-7f-external-wall-to-adjacent-class-10a-buildings-with-FRL-method-1.svg
Figure 9.2.7g External wall to adjacent Class 10a buildings with FRL (method 2)
image-9-2-7g-external-wall-to-adjacent-class-10a-buildings-with-FRL-method-2.svg
Figure 9.2.7h Class 10a buildings with FRL to separating wall (method 2)
image-9-2-7h-class-10a-buildings-with-FRL-to-separating-wall-method-2.svg
NCC Blurbs

A Class 10a carport is exempt from complying with 9.2.4(1) if—

  1. it has—
    1. two or more sides open and not less than one third of its perimeter open and, for the purpose of this clause, a side is considered to be open if the roof covering adjacent to that side is not less than 500 mm from another building or allotment boundary; or
    2. any part of the external wall of the Class 1 building located less than 2 m from the allotment boundary or less than 4 m from another Class 1 building on the same allotment is fire-resisting to the underside of a non-combustible roof covering or to the underside of a non-combustible ceiling lining (see SA Figure 9.2.8a, SA Figure 9.2.8b and SA Figure 9.2.8c); and
  2. it has polycarbonate or non-combustible roof covering and any ceiling lining and wall cladding, including gables, is also non-combustible (see Figure 9.2.8a); and
  3. it does not provide direct vertical support to any part of the Class 1 building; and
  4. in the case where it has a common roof structure with the Class 1 building and the carport or verandah does not have a ceiling (see Figure 9.2.8b), the opening between the top of the wall of the Class 1 building and the underside of the roof covering is infilled with—
    1. non-combustible material; or
    2. construction with non-combustible material on the carport or verandah side; and
  5. in the case where two carports or verandahs have a common roof structure with two different Class 1 buildings and the carports or verandahs have a ceiling, the roof space or ceiling space between the top of the ceiling and the underside of the roof covering is infilled as follows—
    1. vertically between the two Class 1 buildings and between the two appurtenant carports of verandahs in accordance with (d) (see SA Figure 9.2.8d); or
    2. vertically between the two Class 1 buildings and between the two appurtenant carports or verandahs in accordance with (d), except that the construction must be clad with non-combustible materials on both sides and must not be crossed by timber or other combustible building elements except for roof battens with dimensions of 75 × 50 mm or less, roof sarking-type material or a timber gutter board not less than 20 mm thick.
Insert SA figure (9.2.8a) as follows:
SA Figure 9.2.8a: Fire-resisting requirements for carports or verandahs without a ceiling
image-9-2-8a-fire-resisting-requirements-for-carports-or-verandahs-without-a-ceiling-SA.svg
Insert SA figure (9.2.8b) as follows:
SA Figure 9.2.8b: Fire-resisting requirements for carports or verandahs with a non-combustible ceiling
image-9-2-8b-fire-resisting-requirements-carports-verandahs-non-combustible-ceiling-SA.svg
Insert SA figure (9.2.8c) as follows:
SA Figure 9.2.8c: Fire-resisting requirements for external walls in carports and verandahs that share a common roof space
image-9-2-8c-fire-resisting-requirements-external-walls-carports-verandahs-common-roof-space-SA.svg
Insert SA figure (9.2.8d) as follows:
SA Figure 9.2.8d: Fire-resisting requirements for roof space openings in carports and verandahs with a ceiling that share a common roof space
image-9-2-8d-fire-resisting-requirements-for-roof-space-openings-in-carports-SA.svg
NCC Title

Open carports

NCC State
SA
NCC Variation Type
Replacement
NCC SPTC Current
Open carports

A Class 10a carport is exempt from complying with 9.2.4(1) if—

  1. it has two or more sides open and not less than one third of its perimeter open; and
  2. for the purposes of (a), a side is considered to be open if the roof covering adjacent to that side is not less than 500 mm from another building or allotment boundary; and
  3. it has a polycarbonate or non-combustible roof covering; and
  4. any ceiling lining and wall cladding, including gables, is non-combustible (see Figure 9.2.8a); and
  5. it does not provide direct vertical support to any part of the Class 1 building; and
  6. in the case where it has a common roof structure with the Class 1 building and the carport does not have a ceiling (See Figure 9.2.8b), the opening between the top of the wall of the Class 1 building and the underside of the roof covering is infilled with—
    1. a non-combustible material; or
    2. construction clad with non-combustible material on the carport side.
Figure 9.2.8a Identifying an open carport
image-9-2-8a-identifying-an-open-carport.svg
Figure 9.2.8b Requirements for non-combustible infill panels to carport
image-9-2-8b-requirements-for-non-combustible-infill-panels-to-carport.svg

Explanatory information

A side of a carport enclosed by a vehicle access door is not considered to be an open side.

NCC Blurbs

(1) An encroachment is any construction between—

  1. the external wall of the building and the allotment boundary other than a boundary adjoining a road or other public space; or
  2. the external walls of two buildings on the same allotment; or
  3. the external wall of the building and a brush fence.

(2) For the purposes of (1), an encroachment related to any external wall of—

  1. a Class 10a building required to comply with 9.2.4; or
  2. a Class 1 building.

(3) The encroachments allowed within 900 mm of an allotment boundary or within 1.8 m of another building on the same allotment or within 3 m of a brush fence are—

  1. non-combustible fascias, gutters and downpipes; and
  2. light fittings, electricity or gas meters, aerials or antennas; and
  3. pergolas, sun blinds or water tanks; and
  4. unroofed terraces, landings, steps and ramps, not more than 1 m in height.

(4) Except as permitted by (5) or not permitted by (6), encroachments allowed up to but not closer than 450 mm from an allotment boundary or up to but not closer than 900 mm from another building on the same allotment or associated encroachments of another building on the same allotment are—

  1. combustible fascias, gutters and downpipes (see Figures 9.2.9a, 9.2.9b and 9.2.9c); and
  2. eaves with non-combustible roof cladding and non-combustible lining; and
  3. flues, chimneys, pipes, domestic fuel tanks, cooling or heating appliances or other services.

(5) Eaves with non-combustible roof cladding and non-combustible soffit or lining may encroach within 450 mm of the allotment boundary where the external walls of a building are located not less than 900 mm from the allotment boundary and the walls are positioned at an angle of not less than 20 degrees and not more than 70 degrees to the allotment boundary or other building and the eaves only encroach at the corner of the roof (see SA Figure 9.2.9).

(6) Fascias listed in (4)(a) must not be built within 3 m of a brush fence.

Insert SA figure (9.2.9) as follows:
SA Figure 9.2.9: Concession for encroachment of eaves
image-9-2-9-concession-for-encroachment-of-eaves-SA.SVG
NCC Title

Allowable encroachments

NCC State
SA
NCC Variation Type
Replacement
NCC SPTC Current
Allowable encroachments

(1) An encroachment is any construction—

  1. between the external wall of the building and the allotment boundary other than a boundary adjoining a road or other public space; or
  2. between the external walls of two buildings on the same allotment; or
  3. between the external wall of the building and the vertical projection of the external wall of another building on the same allotment; or
  4. that extends beyond the vertical projection of another building on the same allotment other than a building it is associated with.

(2) For the purposes of (1), an encroachment relates to any external wall of—

  1. a Class 10a building required to comply with 9.2.4; or
  2. a Class 1 building.

(3) Encroachments allowed within 900 mm of an allotment boundary or within 1.8 m of another building, or its vertical projection, on the same allotment are—

  1. non-combustible fascias, gutters and downpipes; and
  2. light fittings, electricity or gas meters, aerials or antennas; and
  3. pergolas, sun blinds or water tanks (see Figure 9.2.9a); and
  4. unroofed terraces, landings, steps and ramps, not more than 1 m in height.

(4) Encroachments allowed up to but not closer than 450 mm from an allotment boundary or up to but not closer than 900 mm from another building, or its vertical projection, on the same allotment or associated encroachments of another building on the same allotment are—

  1. combustible fascias, gutters and downpipes (see Figure 9.2.9a, Figure 9.2.9b and Figure 9.2.9c); and
  2. eaves with non-combustible roof cladding and non-combustible lining; and
  3. flues, chimneys, pipes, domestic fuel tanks, cooling or heating appliances or other services.

(5) Encroachments allowed to project beyond the vertical projection of another building on the same allotment are non-combustible fascias, gutters and downpipes (see Figure 9.2.3b).

Figure 9.2.9a Allowable encroachments for non-combustible construction — Combustible fascia up to but not closer than 450 mm to an allotment boundary
image-9-2-9a-combustible-fascia-up-to-but-not-closer-than-450-mm-to-an-allotment-boundary.svg
Figure 9.2.9b Allowable encroachments for non-combustible construction — Non-combustible fascia and gutter within 900 mm of an allotment boundary
image-9-2-9b-non-combustible-fascia-and-gutter-within-900-mm-of-an-allotment-boundary.svg
Figure 9.2.9c Allowable encroachments for non-combustible construction — Unroofed pergola within 900 mm of an allotment boundary
image-9-2-9c-unroofed-pergola-within-900-mm-of-an-allotment-boundary.svg

Explanatory information

A deck is not considered an unroofed terrace and is therefore not permitted as an allowable encroachment under 9.2.9 whether combustible or not.

The term ‘pergola’ is a reference to an unroofed structure.

Explanatory Figure 9.2.9 depicts encroachment of a building on the same allotment, but which is not associated with the building onto which it encroaches.

Figure 9.2.9 (explanatory) Encroachment of a building that is not associated on the same allotment
image-9-2-9-explanatory-encroachment-of-a-building-on-the-same-allotment-that-is-not-associated.svg

Combustible roof lights, skylights or the like installed in a roof or part of a roof required to have a non-combustible covering must—

  1. have an aggregate area not more than 20% of the roof or part of the roof; and
  2. be not less than—
    1. 900 mm from the allotment boundary other than the boundary adjoining a road alignment or other public space; and
    2. 1.8 m from any roof light or the like in another building on the allotment other than an associated building or a detached part of the same building (see Figure 9.2.10).
Figure 9.2.10 Location of combustible roof lights
image-9-2-10-location-of-combustible-roof-lights.svg
Figure Notes

Roof lights depicted in Figure 9.2.10 are combustible.