Extension builders in Westminster

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (21 reviews)

Easily find verified Westminster Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Westminster.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Westminster

3748 Results

Sort by:

Hodstons Development limited
No reviews yet
Extension Builder in Westminster
At Hodstons Our mission is to provide an alternative: The Vertical Evolution. We don't just build rooms; we unlock potential. We transform dark, dusty attics into sun-drenched master suites, state-of-the-art home offices, and serene sanctuaries that harmonize with your existing home while dramatically increasing its market value.
Get in touch
M.H.W Building Contractors
No reviews yet
Extension Builder in Westminster
We are a small, family run business in south east London with over 35 years experience in the construction industry. We cover London and the south east of England. We cover work from kitchens and bathrooms all the way to complete new builds and everything in between. We take great pride in all work we carry out and are not satisfied until every job is complete to the highest quality.
Get in touch
Atlant Construction Ltd
Rating: 5 out of 5
Extension Builder in Westminster
ATLANT is part of a group of construction companies working in the High-End residential sector throughout London & the South East. Our projects include: New-Build Bespoke Houses / Small Developments / New Basements / Large Residential Extensions / Significant Refurbishments / with a value from £100k up to £2 million -- Our main aim at ATLANT is to combine the creativity of design with the practicality of construction to build unique and special homes.
Get in touch
Latest review:
New Builds- 22 Jan 2021
Fantastic job on time and well within budget
Commins bross
No reviews yet
Extension Builder in Westminster
I'm a small builder and I have been working in the construction industry for over 35 years. Through my career I have built complete houses various types of extensions renovation work to all types of bathrooms and kitchens.
Get in touch
Arch construction services ltd
No reviews yet
Extension Builder in Westminster
We undertake all kinds of jobs like plumbing ,heating ,tiling ,carpentry ,kitchen, bathroom, garden works, complete house refurbishment, loft convertion, extention and Etc. We presents quality works and advise.
Get in touch
SV loft conversion ltd
Rating: 1 out of 5
Extension Builder in Westminster
I do all types off building work. I like loft conversion speacialist extension like kitchen, brick work,bathroom,outside dommer and all types of roofwork etc.
Get in touch
Latest review:
Fencing- 22 Jan 2023
Extorting the price to the max.
Sandhu Boyz
No reviews yet
Extension Builder in Westminster
I have a skill of all building work like plumbing electrical flooring painting loft conversion extension new bath work garage etc.
Get in touch
Read Developments
No reviews yet
Extension Builder in Westminster
Hi there. I'm a fully qualified plaster with over 30 years experience winning awards for my plastering skills. Cover all internal/ external plastering works. Also cover a wide range of other trades in building extensions along with refurbishments. Many thanks Simon
Get in touch
SANDYSTONE CONSTRUCTION LIMITED
No reviews yet
Extension Builder in Westminster
Hello to everyone , All Building Work Undertaken, Such As Rear Extension, Side Extension, Refurbishment, Painting, Loft, Tilling For Roof, Roofing, Guttering, Bathroom, Carpet, Kithen And Bedroom Wardrobes, Plumbing, Electric ( re-wiring), New Build Houses !
Get in touch
FineLineSolutions
No reviews yet
Extension Builder in Westminster
Hi, I’m Alex, and I take pride in offering reliable, high-quality work with a friendly, down-to-earth approach. I understand how important your home and outdoor spaces are, and I’m here to help bring your ideas to life—whether it's fencing, repairs, or improvements. I believe in clear communication, fair pricing, and leaving every job tidy and done to the highest standard. No job is too big or too small, and I’m always happy to offer advice or answer any questions along the way. I look forward to helping you with your next project!
Get in touch
I. Lebedev
No reviews yet
Extension Builder in Westminster
We are professionals and we take our work seriously.
Get in touch
High Quality MDF Spraying ltd
No reviews yet
Extension Builder in Westminster
About High Quality MDF Spraying Ltd Welcome to High Quality MDF Spraying Ltd! We are a professional property transformation company specializing in premium-grade spray finishes, high-end painting & decorating, and interior renovations. With 15 years of industry experience and a commitment to using only the finest products on the market, we deliver flawless results that stand the test of time. Our Core Services Include: Premium Spraying (Booth & On-Site): Flawless high-end finishes for MDF, timber, and bespoke joinery. Kitchen & Furniture Respraying: Full transformations for kitchen cabinets, doors, frames, and fitted furniture with a factory-like finish. Professional Painting & Decorating: Comprehensive interior decorating, from expert wall preparation to flawless final coats. Interior Fit-Outs & Property Finishings: Expanding into broader construction, carpentry, and modern interior renovations to handle your project from start to finish. Why Choose Us? We Care About Your Home: Your property and belongings are fully respected. We treat every job site with the utmost care. Precision Masking: We implement strict, professional masking and dust-extraction protocols to completely protect your walls, floors, and equipment.
Get in touch
Naaz builds
No reviews yet
Extension Builder in Westminster
Looking forward to make you feel free from hassles.
Get in touch
Constantin Birgauan
No reviews yet
Extension Builder in Westminster
BRICKWORK, BLOCKWORK AND EXTENSIONS. Please feel free to contact me anytime for quotes and questions.
Get in touch
Oprea ltd
No reviews yet
Extension Builder in Westminster
Hello, my company declares punctuality, we do everything with proper documents, invoices
Get in touch
North London brickworks ltd
No reviews yet
Extension Builder in Westminster
I’m reaching out to introduce North London Brickworks Ltd, a professional bricklaying company based in North London. We specialize in all aspects of brickwork, including new builds, commercial, and residential projects. With a skilled team and a commitment to high-quality workmanship, we ensure every project is completed to the highest standards. We would love the opportunity to discuss any upcoming projects where our services could be of value.
Get in touch

4.6

Top rated Extension Builders

Our Extension Builders in Westminster, are rated 4.6 out of 5 based on 21 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What types of services are offered by local extension builders in Westminster?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Westminster for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Westminster who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Westminster extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Westminster?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Westminster will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Westminster extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Westminster home extension project is likely to cost.

Find extension builders in Westminster with MyBuilder

Hiring the right extension builder in Westminster with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Westminster extension builders. Once your job is live, we’ll share it with home extension builders in Westminster who can express their interest.

Step 2: Compare different extension builders in Westminster

When you start receiving interest, review profiles of local Westminster extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Westminster extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Westminster, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Westminster extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Westminster extension builder before hiring?

Before hiring an extension builder in Westminster or extension building company in Westminster, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Westminster?

An extension builder in Westminster should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Westminster extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Westminster?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Westminster extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Westminster extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Westminster

Can an extension builder in Westminster help with planning permission?

Yes, many extension builders in Westminster can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Westminster handle everything from design to construction?

Many Westminster extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Westminster help with materials and finishes?

Yes, most extension builders in Westminster can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.