Terrace houses sit between HDB flats and full bungalows in scale — but terrace house renovation Singapore projects still involve landed-property rules, multi-storey sequencing, and outdoor areas that condos do not have. Planning across all floors and the roof early prevents budget blowouts mid-project.
Whether you own an inter-terrace or corner terrace, the renovation approach shares much with other landed homes but with tighter footprints and party-wall considerations.
What makes terrace renovation different
Terrace houses typically span three or more levels with shared party walls, roof access constraints, limited frontage, and often a small yard or car porch. URA and BCA rules apply to extensions, envelope changes, and structural works. MCST does not apply — but neighbour relations and setback rules do.
Multi-storey logistics (material hoisting, protection, worker access) add cost compared to single-level HDB renovation.
Popular upgrade areas
Owners commonly renovate all bathrooms and the kitchen, reconfigure ground-floor living for open-plan flow, add or upgrade bedrooms on upper levels, improve staircases and landings, waterproof roof and balcony areas, and refresh outdoor yards or car porch finishes.
Corner terraces may have more flexibility for side windows and light wells — inter-terrace layouts need careful planning to avoid dark middle rooms.
Extensions and A&A works
Adding a rear extension, attic room, or floor area increase triggers formal approval. Check URA allowable GFA, plot ratio, and envelope controls before engaging designers. Unapproved structures create resale and financing problems.
Adex handles landed house renovation including terrace properties, with structural rectification, roof waterproofing, and bathroom waterproofing.
Waterproofing and roof priorities
Terrace roofs and upper-level bathrooms are common leak sources affecting multiple floors. Fix active roof and bathroom waterproofing before investing in ground-floor interior finishes — stains on lower ceilings often originate two levels above.
Flat roof sections need periodic maintenance; sloped tile roofs need proper flashing and gutter clearance.
Sequencing across levels
Work generally proceeds from top to bottom for wet and structural works: roof and upper bathroom waterproofing first, then upper-level carpentry and M&E, then lower floors, finally ground-floor living and outdoor areas. This sequence limits damage to completed finishes below.
Protection of stairs and floors during multi-week projects is essential on narrow terrace access.
Cost drivers for terrace houses
Number of bathrooms and wet-area scope, extent of hacking and structural change, carpentry volume across levels, roof and external works, electrical rewiring for older properties, and approval-related professional fees all push budgets. Corner terraces with larger footprints cost more than narrow inter-terrace units.
Set contingency higher than for HDB — hidden conditions in older terraces are common.
Choosing the right contractor
Look for landed-project experience, not just HDB portfolio. Ask about multi-storey sequencing, party-wall protection, and authority submission support. Visit completed terrace projects if possible.
A contractor who only does flats may underestimate logistics and structural complexity.
Bottom line
Terrace house renovation in Singapore rewards early planning across all floors, roof, and outdoor areas. Fix waterproofing from the top down, confirm approval needs before extension works, and budget for multi-storey logistics. With the right sequencing and a landed-experienced contractor, you unlock the full potential of terrace living without carrying leaks and defects into your new interior.
