Guide to HDB Door and Gate Sizes in Singapore: What You Need to Know

by | Mar 21, 2025

When installing a new door or gate in your home, choosing the right size is crucial to ensure a perfect fit. In Singapore, Housing Development Board (HDB) flats, condominiums, and landed properties have different standard measurements. Here’s a breakdown to help you choose the right door and gate size for your property.

Standard Door Sizes Singapore

In Singapore, standard main doors for HDB/BTO flats are typically 3 feet wide and 7 feet high (3×7 ft), while double-leaf doors are often 4 feet wide and 7 feet high (4×7 ft). 

HDB Main Door Size

 HDB main doors are commonly 3x7ft or 4x7ft.

Single-leaf door (3x7ft): 3 feet wide by 7 feet high (915mm x 2135mm)

Double-leaf door(4x7ft): 4 feet wide by 7 feet high (1220mm x 2135mm)

HDB Main Door thickness

Non-Fire Rated: 40-45mm
Fire-Rated (30 minutes): Typically, 44-45mm
Fire-Rated (60 minutes): Around 54mm
The standard thickness for HDB doors is 42mm (may vary slightly depending on frame thickness)

HDB Bedroom Door Size

Bedroom Door Size: 3×7 feet (915mm x 2135mm)
Bedroom Door Thickness: 36 mm (1.38 inches)

HDB Toilet Door Size

Standard Size(3x7ft): 3 feet (36 inches) wide x 7 feet (84 inches) high. (915mm x 2135mm)
Toilet Door Thickness: Around 35mm.

Standard Gate Sizes Singapore

In Singapore, standard HDB main gate sizes are typically 3 feet by 7 feet (90 x 210 cm) or 4 feet by 7 feet (120 x 210 cm), depending on whether your main door is a single-leaf or a double-leaf design.

HDB Gate Sizes

 Single-leaf door:  If your main wooden door is a single panel, the corresponding HDB gate size is typically 3 feet by 7 feet (90 by 210 cm).
 Double-panel door:  If your main wooden door has one small and one big panel, the HDB gate size is usually 4 feet by 7 feet (120 by 210 cm).

Identifying the Size

Single Panel Main Door: Likely a 3×7 ft gate. 

Double Panel Main Door (one big, one small): Likely a 4×7 ft gate.

Customizing Your Door & Gate Sizes

If your entrance is slightly different from standard sizes, SG Doors offers fully customizable options, including custom-width and height adjustments. Whether you need a wider main gate or a taller bedroom door, we provide tailored solutions to fit your home perfectly.

Before buying a door or gate, it’s important to measure accurately. If you’re unsure, SG Doors can help you get the right size. Contact us today for high-quality, customizable doors and gates at factory-direct prices!