A&A Works in Singapore: What Homeowners and Investors Must Know in 2025


If you’re a landed property owner or investor in Singapore looking to upgrade your home or increase its value, A&A (Additions & Alterations) works might be your ideal solution. Whether you’re modernising an older terrace house, adding a new room, or enhancing your property’s façade, A&A works allow you to do so — without the cost and hassle of a complete rebuild.

Here’s a 2025 guide to help you understand the A&A process, what’s involved, and why it’s a smart choice for homeowners like you.

What Are A&A Works – and Are They Right for You?

A&A works refer to improvements made to an existing building’s internal layout or external appearance — without drastically altering the structural framework. These upgrades can significantly improve comfort, functionality, and resale value.

Common A&A works include:

  • Changing or upgrading your roof
  • Adding or removing non-structural walls
  • Building a new bathroom or room
  • Modernising the interior layout
  • Adding a skylight or extended patio

If your property feels outdated, too small, or doesn’t suit your lifestyle, A&A works can help you transform it without starting from scratch.

Why Landed Property Owners Choose A&A Works in Singapore

Boost Property Value – Modern designs and functional layouts can raise resale prices and rental yield.

Avoid Full Reconstruction – Keep existing foundations while upgrading important spaces.

Tailored to Your Lifestyle – Redesign interiors, add bedrooms, or improve ventilation to meet your family’s needs.

Faster and More Affordable – Shorter project timelines and fewer regulatory hurdles compared to rebuilding.

The A&A Process: What to Expect

1. Consultation & Site Inspection

A licensed professional (architect or A&A contractor) will inspect your home and recommend ideas based on your goals, site condition, and compliance rules.

2. Design & Planning

You’ll work closely with your architect or designer to finalise layout changes, materials, finishes, and budget. This is where your dream design comes to life — in line with URA & BCA guidelines.

3. Authority Submissions

Your professional team will handle submission to URA and BCA. This includes:

  • Architectural drawings
  • Compliance reports
  • Written Permission (WP) applications
  • Building Permit requests

4. Construction

Once approvals are secured, the construction begins. Most A&A projects take 4–12 months, depending on scope. A project manager will ensure everything runs smoothly, safely, and on schedule.

5. Completion & Handover

After construction, your builder will apply for TOP (Temporary Occupation Permit) or Certificate of Statutory Completion (CSC). Then — it’s all yours to enjoy.

Important Tips for Homeowners Starting A&A Works

  • Hire Experienced A&A Specialists – Choose contractors familiar with landed property regulations.
  • Plan for Temporary Relocation – For major works, you may need to move out during construction.
  • Budget Smartly – Always include a 10–15% buffer for unexpected costs.
  • Stay Involved – Review plans, materials, and timelines with your team regularly.

Ready to Start A&A Works on Your Landed Property?

Whether you’re upgrading your family home or investing in a high-potential property, A&A works are one of the smartest and most cost-efficient ways to enhance space and increase property value in Singapore.

Speak with a trusted A&A contractor at Inspiredhomes.com.sg today to get expert advice tailored to your property and budget.