FOURTH SCHEDULE
Regulation 12
Minor building works not requiring certificate of accredited checker
1.  Building works for or in connection with —
(a)detached houses, semi-detached houses, terraced or linked houses for residential purposes not exceeding 3 storeys involving only structures that are not the subject of sub‑paragraphs (b) to (k);
[S 665/2013 wef 28/10/2013]
(b)detached substations not exceeding 3 storeys, detached bin centres, detached guard houses and the like; and
[S 54/2008 wef 15/02/2008]
[S 101/2020 wef 10/02/2020]
(c)retaining walls and earth stabilising structures not exceeding a visible height of 4 metres;
[S 54/2008 wef 15/02/2008]
(d)shophouses not exceeding 3 storeys (where attic or basement floor exceeding an area of 100 square metres shall be considered as a storey);
[S 54/2008 wef 15/02/2008]
[S 101/2020 wef 10/02/2020]
(e)single storey buildings, sheds, covered walkways and the like where the span of beams or roof trusses is not more than 15 metres or the span of any cantilever is not more than 6 metres;
[S 665/2013 wef 28/10/2013]
(f)underground tank, swimming pool and the like not exceeding a depth of 4 metres;
[S 54/2008 wef 15/02/2008]
(g)[Deleted by S 665/2013 wef 28/10/2013]
(h)box culverts, canal crossings or bridges with spans not exceeding 5 metres;
[S 54/2008 wef 15/02/2008]
[S 665/2013 wef 28/10/2013]
(i)chimneys, lighting masts and the like not exceeding 20 metres in height;
[S 54/2008 wef 15/02/2008]
(j)foundation for steel tank, equipment and the like not exceeding 20 metres in height;
[S 665/2013 wef 28/10/2013]
(k)foundation and supporting frames for gantry cranes, overhead cranes, jib cranes or monorail hoists that are independently supported if —
(i)no span of frame between 2 supports exceeds 15 metres; and
(ii)no span of any cantilever supporting frame exceeds 6 metres;
[S 101/2020 wef 10/02/2020]
(l)demolition of any building or structure;
[S 665/2013 wef 28/10/2013]
[S 101/2020 wef 10/02/2020]
[S 218/2025 wef 01/04/2025]
(m)2-storey buildings if —
(i)no span of beam or slab in the building exceeds 15 metres;
(ii)no span of any cantilever in the building exceeds 6 metres; and
(iii)the building works do not involve pre‑stressed or post‑tensioned construction; and
[S 101/2020 wef 10/02/2020]
[S 218/2025 wef 01/04/2025]
(n)the supporting structure of a mechanised car parking system, if the height of the supporting structure does not exceed 10 metres and the span of the supporting structure does not exceed 15 metres.
[S 218/2025 wef 01/04/2025]
2.  Structural works consisting of repairs, alterations and additions to an existing building which do not materially affect the key structural elements of the building.
[S 54/2008 wef 15/02/2008]