A&A (Addition & Alteration)

Trusted Addition & Alteration (A&A) Authority in Singapore
Addition and Alteration (A&A) services refer to the remodelling and enhancement of existing structures to meet evolving needs. It encompasses a range of both cosmetic and functional changes to create visually appealing, efficient, and compliant buildings. These architectural solutions for your residential property transform and elevate your environment for an upgraded life quality.
Whether it’s beautifying your house or rectifying issues for a safer living space, Colebuild’s A&A service works to deliver that lifestyle you desire through a combination of expertise and attention to detail.
We specialise in A&A works such as building extensions, connecting two or more floors or rooms, removing partition walls, installing cladding or curtain walls to the building façade, and adding structural frames, shelters, lifts, staircases or canopies.
From conceptualising your building design and obtaining relevant permits to renovation and handover, our years of experience will give you the ultimate hassle-free journey to enhancing your home.


What are the benefits of Addition and Alteration?
Addition and Alteration (A&A) works offer numerous advantages, allowing homeowners to enhance their living spaces without the need for relocation. Here are some key benefits:
Add extra rooms or extend existing spaces to accommodate growing families or changing needs.
Reconfigure layouts to optimise functionality and create a home that better suits your lifestyle.
Improve the appearance of your property with cohesive designs, modern finishes, and improved visual appeal.
Well-executed A&A works can boost your home's resale value, making it a worthwhile investment.
You avoid the costs and complexities of moving to a new house by adapting your current property.
Modify your home while retaining its sentimental or historical significance.
Incorporate energy-efficient features or smart home technology to enhance comfort and reduce long-term costs.
Common A&A Works for Modern Living
In Singapore, homes often undergo addition and alteration (A&A) works to adapt to changing needs, improve functionality, and enhance aesthetics. Here are some examples:
Interior Space Reconfiguration
Reconfiguring interior layouts to create more open-plan living spaces, additional bedrooms, or dedicated work areas to suit the needs of the homeowners.
Extension of Living Spaces
Adding extensions, such as sunrooms, conservatories, or additional floors, to increase living space.
Roof Terrace or Balcony Addition
Creating outdoor living areas by adding roof terraces, balconies, or patios, providing homeowners with additional space for relaxation and entertainment.
Structural Reinforcement
Strengthening the structural integrity of homes through structural modifications, such as underpinning, to ensure safety and stability, especially for older properties.
Staircases Installation
Often redesigned or added to enhance accessibility and flow between different levels of the home.
Lift Installation
When integrating a new lift system, as part of A&A works, into the existing structure, homeowners must ensure full compliance with safety regulations. In doing so, homeowners can significantly improve mobility for residents and visitors, while increasing the property's overall value and functionality.
Choosing Colebuild for Your A&A Works
At Colebuild, we recognise that undertaking additions and alterations (A&A) works for your home is an important decision.With our commitment to excellence, professionalism, and customer satisfaction, here’s why Colebuild stands out as the leading A&A contractor in Singapore:

Expertise and Experience
With years of experience in A&A works, our team of skilled professionals ensures your vision is executed with precision. We are well-versed in Housing & Development Board (HDB) guidelines for renovation and A&A works, ensuring full compliance with all regulations for a smooth and successful project.
Tailored Solutions
We offer personalised solutions for your A&A works, carefully considering your needs and budget. Our team ensures all additions and alterations adhere to HDB’s guidelines for structural safety, load-bearing walls, ceiling height, and other critical regulations.
Design Excellence
Our designs are crafted to blend seamlessly with your existing space, while following HDB's guidelines for A&A works, such as ensuring compliance with permissible structural changes and safety standards.
Quality Craftsmanship
We focus on delivering high-quality craftsmanship, while strictly adhering to HDB’s renovation guidelines to ensure every aspect of your A&A works is completed to the highest standard.
Transparent Communication
We maintain clear communication throughout the process, keeping you updated on HDB approval processes, necessary permits, and regulations to ensure a hassle-free experience for your A&A works.
Commitment to Customer Satisfaction
At Colebuild, customer satisfaction is our priority. We ensure your A&A works not only meet but exceed your expectations, all while complying with HDB's renovation and A&A works guidelines for a smooth and successful project.
Our Portfolio
Frequently Asked Questions About A&A Works
Do I need permits for A&A works?
Depending on their scope and government regulations, permits may be required for certain types of addition and alteration projects. Our professional team at Colebuild will guide you through the process, ensuring that all necessary permits are obtained smoothly. Learn more about our expertise here.
How long does it take to complete A&A works?
The duration of A&A works varies based on the complexity of the project. Small-scale modifications may take a few weeks, while extensive structural changes could require several months. Contact us for a detailed timeline and project estimate through our contact page.
How much do A&A works typically cost?
The cost of addition and alteration depends on factors like project size, material quality, and labour requirements. Colebuild ensures transparent pricing and tailored solutions to suit your budget. Get a detailed quote by reaching out to us through our contact page.
What should I consider before starting A&A works?
Before beginning A&A works, consider:
- Your project goals and priorities.
- Budget and timelines.
- Potential disruptions to daily life.
- Necessary permits and regulations.
- Contingency plans for delays or unforeseen expenses.
Our experienced team will help you plan every detail to ensure a smooth process. Visit our blog for tips and insights on renovation planning.
Can I live in my home during A&A works?
Living in your home during addition and alteration projects depends on the scope of the work. For minor renovations, staying at home might be feasible. However, larger projects involving structural changes may require temporary relocation for your convenience and safety. Discuss your options with our team for tailored advice.

Testimonial
Mr. Shawn Wong
I would like to thank ColeBuild Team rebuilding our corner terrace so well! They were always prompt and timely with their service and they kept up-to-date on the progress and were always ready and available to answer my questions. Everything went correctly and they are very responsible and efficient. Had no worries when they are handling our house. I would definitely recommend ColeBuild to our friends, family or anyone who needs quality work on budget.

Testimonial
Mr. Shawn Wong
I would like to thank ColeBuild Team rebuilding our corner terrace so well! They were always prompt and timely with their service and they kept up-to-date on the progress and were always ready and available to answer my questions. Everything went correctly and they are very responsible and efficient. Had no worries when they are handling our house. I would definitely recommend ColeBuild to our friends, family or anyone who needs quality work on budget.

Testimonial
Mr. Shawn Wong
I would like to thank ColeBuild Team rebuilding our corner terrace so well! They were always prompt and timely with their service and they kept up-to-date on the progress and were always ready and available to answer my questions. Everything went correctly and they are very responsible and efficient. Had no worries when they are handling our house. I would definitely recommend ColeBuild to our friends, family or anyone who needs quality work on budget.

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