Bay Window

A bay window juts out beyond the main building line, typically glazed on three sides with a sill low enough to sit on. It is a popular design feature because it adds a sense of openness and light to a room without requiring a full structural extension, and it appears often in both bedrooms and living areas of Singapore private residential layouts.

It matters to a buyer because a generous bay window can make a room feel larger and more distinctive than the quoted floor area alone suggests, and some buyers genuinely value the extra sill space for seating, display, or storage. How the area is treated in the unit's official quoted strata area has shifted at different points in the private residential market's history, and different developments built under different rule regimes can treat this differently, some including it fully or partially within saleable area and others not.

Because the treatment has changed over time, a blanket assumption that bay windows are always included or always excluded from the quoted area is not safe, and it commonly misleads buyers who carry an old rule of thumb from a previous purchase or from a different project into a new one. Marketing materials and furniture layouts can also present the bay window ledge as usable floor space when its depth and height make it impractical for much beyond seating or display.

Ask the developer or your agent directly whether the bay window area is included in the quoted strata area for the specific project you are looking at, review the official floor plan and area schedule attached to the Sale and Purchase Agreement rather than relying on a showflat impression, and if you are buying to rent out, consider whether the bay window's actual functional use matches what a tenant would value.

Winfred Quek is an Associate Marketing Consultant at Crestbrick Pte Ltd (CEA Licence No. L31010886H). CEA R073319H. This page is for general information only and does not constitute financial, investment, or legal advice. Verify current figures with IRAS, HDB, CPF Board, or MAS before making any decision.