Addition and Alteration (A&A) Contractor Service

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At Sim The Builder, we provide professional A&A works for landed homeowners looking to enhance and maximise their existing homes. Whether you’re planning structural extensions, layout reconfigurations, or an A&A renovation, our experienced team manages every stage of the project, from planning and approvals to construction. We focus on quality workmanship, clear communication, and delivering a renovation that complements your lifestyle and adds lasting value to your home.

Experienced A&A Contractor in Singapore

Addition & Alteration (A&A) construction service involves construction modifications made to an existing landed property structure. These can include extensions, internal modifications, or external changes to the structure, aimed at enhancing the aesthetics or improving the functionality of the house. These A&A construction service transform your landed property, significantly elevate your living environment and quality of life.

As an A&A contractor in Singapore, Sim The Builder specialises in delivering A&A renovation projects tailored to your specific needs. Whether it’s beautifying your home or solving a safety issues, our A&A services are tailored to deliver the lifestyle you aspire to, combining our industry expertise with extensive experience.

We handle a wide range of A&A projects, such as building extensions, connecting multiple floors or rooms, removing partition walls, installing cladding or curtain walls on facades, and adding structural frames, shelters, lifts, staircases, or canopies. Our team is committed to ensuring that each project meets the highest standards of quality and compliance.

From the initial consultation to the final handover, we manage every aspect of your addition and alteration works. We obtain all necessary permits, coordinate with skilled professionals, and oversee the entire renovation process. Our goal is to provide a seamless and stress-free experience, transforming your vision into reality and enhancing your home’s value and functionality.

Common A&A Renovations in Singapore

Aesthetic home trends may evolve, and practical space needs are continually changing as families grow and lifestyles shift. Landed property owners may choose to utilise addition and alteration services to adapt their homes to these changes, enhance functionality, and refresh their living spaces to better suit their current needs and preferences.

Interior living room in a landed property at Paya Lebar Street.

Extension of Living Spaces

Adding extra rooms or expanding existing spaces to accommodate growing needs.

Landed Property Garden at East Coast Terrace

Addition of External Space

Constructing outdoor living spaces by incorporating roof terraces, balconies, or patios, which offer homeowners extra areas for relaxation and social gatherings.

Staircase in a landed property at Paya Lebar Street

Upgrading of Internal Amenities

Adding of staircases or lifts to enhancing accessibility and functionality.

Outdoor space in a landed property at Nim Green

Landscape Enhancements

Integrating garden spaces, patios, swimming pool or outdoor living areas.

Enjoy Quality A&A Renovations with Sim The Builder

Whether you’re expanding your living space or upgrading your home’s functionality, our A&A works in Singapore are tailored to your needs. From planning and approvals to construction and completion, we deliver quality workmanship and a seamless renovation experience that brings your vision to life.

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Featured A&A Projects

Jalan Chempedak

Terrace

Jalan Unggas- NEW

Semi-Detached

Walmer Drive- NEW

Detached

Meragi Terrace – NEW

Semi-Detached

Ready to Build Your Dream Landed Home?

Explore how we’ve transformed landed properties across Singapore through thoughtful design, quality workmanship, and meticulous project management. Browse our completed projects for inspiration and see how we bring every homeowner’s vision to life.

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5-Star Reviews for Our A&A Works in Singapore

      EXCELLENT  
   Based on 20 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Benedict Lim 
 
 
 
 Trustindex verifies that the original source of the review is Google. This review has come 10 years late.
Then Mr Sim did not have such a social media presence. I stumbled upon Sim The Builder recently and I "owe" Mr Sim this review. Mr Sim - principled, honest and to standard. He took over a contract where my first builder ran-road. He did not ask for that downpayment (that I paid to the ran-road 1st builder) but to just pay according to progress of the project. Mr Sim did NOT play variation order, he said he would deliver a reasonable project. He kept his word. He was super strict with his workers and in turn they worked hard and the supervisor Si Qiang was always demanding standard. Mohan then worked on the project as well.
When I shifted to my home in 2015, we were overjoyed. My family really had a very positive experience with Mr Sim and his team. Through the years, they would come by to do needed fixes (commonly leaks). Thank you, Mr Sim for we have such a little home to call ours where you rescued us from that first ran-road builder.
  
 
      Posted on Google  
   
   Rie 
 
 
 
 Trustindex verifies that the original source of the review is Google. We engaged Sim The Builder to rebuild our old single-storey home into a 3-storey semi-D to accommodate our growing family across three generations. It was a big undertaking, and we needed a builder who could manage the complexity. Sim The Builder impressed us with their well-organised design-and-build workflow, responsive communication, and thoughtful planning, especially around accessibility, privacy and communal living. They worked with our family’s needs in mind, not just the structure. We moved in earlier this year and everyone, from Ah Ma to our youngest son has settled in beautifully. Truly grateful for the care and professionalism. Thank you Vrom!
  
 
      Posted on Google  
   
   Briana Foo 
 
 
 
 Trustindex verifies that the original source of the review is Google. We approached Sim The Builder in early 2024 for a complete rebuild of our inter-terrace home, which was purchased as our second property. As business owners, we didn’t want to manage multiple consultants or run into unexpected coordination issues. What we got was a streamlined, builder-led process that gave us clarity, structure, and serious peace of mind. The team guided us through every step - from planning and approvals to demolition and rebuilding. Vrom and his team really gave us their honest advice. They respected our time and our budget, and most importantly, delivered a beautiful home that met all our practical needs. Highly recommend their service to anyone looking for a well-managed, no-nonsense build.
  
 
      Posted on Google  
   
   Tan Colin 
 
 
 
 Trustindex verifies that the original source of the review is Google. We approached Vrom in 2023 after being referred by a friend who also rebuild with them. We wanted to overhaul our old 2-storey terrace house, and they made the process surprisingly smooth. Their team proposed practical solutions in terms of both design & costs. What really stood out was their transparency and no pressure attitude. We always knew what we were paying for at every step of the way. They also handled all the URA submissions and technical paperwork for us which saved us tons of hassle. Thanks again Vrom!
  
 
      Posted on Google  
   
   peixuan ! 
 
 
 
 Trustindex verifies that the original source of the review is Google. We engaged Sim The Builder around early 2024 to rebuild our 2.5-storey semi-detached home. From the initial consultation to final handover, the entire project was managed with remarkable professionalism. Vrom, the project director, took time to explain each phase clearly, and the team was consistently punctual, responsive, and meticulous. We really appreciated how they managed both the design and construction under one contract - it helped us save a lot of time and coordination effort.
The quality of workmanship was evident throughout and really no hidden costs. Everything was transparent and straightforward. I highly recommend Sim The Builder if you looking for a builder who truly delivers on their promise.
  
 
      Posted on Google  
   
   Philene Chen 
 
 
 
 Trustindex verifies that the original source of the review is Google. We engaged Sim The Builder for our home reconstruction, and they exceeded all expectations! Their team was professional, efficient, and always available to answer our questions. Our new home turned out beautifully! 🥰
  
 
      Posted on Google  
   
   yumin wee 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sim The Builder transformed our home beautifully. We are thrilled with the final result.
  
 
      Posted on Google  
   
   Sidney Brown 
 
 
 
 Trustindex verifies that the original source of the review is Google. The craftsmanship and attention to detail from Sim The Builder are second to none. Highly recommend!

Frequently Asked Questions About A&A Works in Singapore

1. What are A&A works?

A&A works (Addition & Alteration works) involve improving or modifying an existing landed property without carrying out a complete rebuild. This may include structural extensions, layout reconfigurations, or upgrading different areas of your home. If you’re planning a complete rebuild instead, our Design and Build service may be a better fit for your project.

2. Do I need approval before carrying out A&A works?

Depending on the scope of work, approvals from the relevant authorities may be required. Our team will advise you on the necessary submissions and manage the approval process to ensure your renovation complies with all applicable regulations.

3. How do I know if A&A works are suitable for my home?

A&A works are ideal if your existing home has a strong foundation and only requires improvements or extensions. However, if you’re planning to rebuild from the ground up, our Landed House Design in Singapore service can help you create a home that’s tailored to your lifestyle and future needs.

4. How long do A&A works usually take?

The duration of an A&A project depends on the scope and complexity of the works. Once we understand your requirements, we’ll provide a realistic project timeline and keep you updated throughout every stage of the renovation.

5. Can I view your previous A&A projects?

Yes. You can explore our Projects portfolio to see how we’ve transformed landed homes across Singapore. Our completed projects showcase the quality of our workmanship and provide inspiration for your own renovation.

Ready to Transform Your Home?

Whether you’re planning a home extension, structural alteration, or a complete A&A renovation, Sim The Builder is here to guide you every step of the way. Share your ideas with our team, and we’ll help you create a solution that enhances your home’s functionality, value, and everyday living.

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View Our Publications

Learn more about our A&A renovation services and other landed property tips through our articles. Explore how our expertise can enhance your property and keep up with the latest trends in home improvement.

8 Types of Landed Property in Singapore: Which One Suits You Best?

29th April 2026
Your Complete Guide to Buying and Owning Landed Property in Singapore

22nd April 2026
How Long Does It Take to Build a Landed House in Singapore?

1st April 2026