Extension Builders in Castelnau

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in Castelnau

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ARZ Design & Construction Ltd
No reviews yet
Extension Builder in Castelnau
We are a construction company with a proven track record of delivering high-quality building services. Over the years, we’ve built a reputation for excellence through our commitment to craftsmanship, attention to detail, and a strong focus on customer satisfaction. Our expertise spans across a wide range of services, including new builds, office fit-outs, full property renovations, loft conversions, extensions, and external works, as well as property maintenance and management. Whether it’s creating a bespoke family home from the ground up or breathing new life into an existing property (Residential or commercial), we bring the same level of dedication and care to every project we undertake. At the heart of our business is a simple but powerful ethos: “Do it once, do it right.” This principle guides everything we do — from the quality of materials we use to the professionalism of our team and the clarity of communication with our clients. Why Choose Us? 1. Professionalism: We approach every project with integrity, transparency, and a clear sense of responsibility. 2. Quality-Driven: We never cut corners and always strive for excellence in workmanship and finish. 3. Agile: We are flexible and adaptable, able to respond quickly to challenges and client needs. 4. Trustworthy: Our clients trust us to deliver on our promises, and we take that trust seriously. 5. Clear Communication: We believe clear, open, and honest communication is key to successful outcomes and lasting relationships. Our success is reflected in the positive testimonials and long-term relationships we’ve built with our clients, many of whom return to us for future projects or refer us to others with confidence. If you’re looking for a construction partner in London who combines experience, reliability, and a commitment to quality, we’d be delighted to discuss how we can help bring your vision to life
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Affordable Building Company
Rating: 5 out of 5
Extension Builder in Castelnau
We specialise in both internal and external building works within the domsestic market and offer a compete build sevise from project design all the way to project completion. We have specialist crews for all projects, lofts, extensions and coservatories.
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Latest review:
Extensions- 26 Sep 2012
Andy and his team did a fantastic job. Our neighbours were very uncooperative and restricted noisy working hours quite severely but Andy was very accomodating. He is very easy to talk to and happy to discuss ideas you may have concerning the build. I would definately reccommend him. We are delighted by the extension and will definately use Andy again in the future. Thanks!
Gilroy Building Services Ltd
No reviews yet
Extension Builder in Castelnau
We are a general building company who pride ourselves on quality workmanship and providing each client with a great all round building service. We carry out both commercial and residential contracts, having worked for companies such as Taylor wimpy, Simcott projects, Michealis Boyd, Witherslack group and others. We provide quality, skilled, certified trades people with a wealth of experience so you can rest assured the work will be of a high standard. Get in touch today for a free quote!
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ERCON LTD
Rating: 5 out of 5
Extension Builder in Castelnau
We are an Engineering & Design Company with 20 years experience within the industry. We make structural calculations and drawings as well as the construction works from scratch. We are providing top quality services for all type of projects. We are here to design and build creative and elegant projects of all sizes as well as to design refurbishment projects such as loft conversion and extensions.
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Latest review:
Joinery & Cabinet Making- 16 Dec 2022
I'm so happy with shelving that ozzy and his colleague made. Ozzy took the time to understand want I wanted (floating alcove shelving) provided a clear and comprehensive quote, and kept me updated on completion of the shelving in his workshop. On day of installation, the guys were lovely and friendly, they went the extra mile in dealing with floors and walls that aren't at all straight, and the finished result blew me away, it's transformed the space completely. Such a pleasure to deal with, would highly recommend and i would definitely use them again in the future.
Vladimir paskov -general bulding
No reviews yet
Extension Builder in Castelnau
General builder .handy man Ground worker. Steel beams installer
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G&B Welding
No reviews yet
Extension Builder in Castelnau
Welder Fabrication steel work for extension house,building garage workshop…!
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Mihail
No reviews yet
Extension Builder in Castelnau
For all your building and home improvement needs. Quality work and guaranteed. Professional Tradesman YOUR HOME IN EXPERT HANDS Building • Renovating • Transforming · 🛠️ Kitchen Fitting · 🚿 Bathroom Renovation · 🧱 Bricklaying & Extensions · 🎨 Painting & Decorating · ⬜ Plastering · ◻️ Tiling (Walls & Floors) · � Patios & Driveways Get in touch for a friendly consultation and a competitive quote! 📍London Based
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connell construction surrey ltd
No reviews yet
Extension Builder in Castelnau
extensions, loft extensions, bathrooms, kitchen, all carpentery drives slabbing, fencing and all general building works
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Dong
No reviews yet
Extension Builder in Castelnau
I have been in the decoration industry for twenty years and can handle all kinds of repairs, expansions and renovations of houses.
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Gola construction
No reviews yet
Extension Builder in Castelnau
Gola-Construction Ltd is a young and dynamic construction company based in West London area. We aim to deliver excellent service to every customer, making sure the all process is stress free. We offer a range of services from general property renovations and refurbishments to extensions, side-returns, basements, loft conversions, plastering, kitchen fitting and bathrooms.
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Bajwa construction
Rating: 5 out of 5
Extension Builder in Castelnau
Welcome To Bajwa Construction Ltd. We Specialise in Bathroom Design & Installation, we are a family run business with numerous years’ experience in the trade. We provide all types of bathroom fitting and tiling services. We Also Offer the following Services: - · Bathroom Refurb · Bathroom Installations . House refurbishment · Tiling . Extension, side extension , back extension · Plumbing · Plastering/Rendering
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Latest review:
Gurpreet built my utility room in March 2023 and throughout the work he was very professional, puntual, consistent and accessible. Thank you
Mazaffar zaman
No reviews yet
Extension Builder in Castelnau
Hi all my work has been carried out with extremely high precision I have many vip clients who will allow me to take Any future customer's to see there homes and speak to you about how I work and wot a hight standard Finnish I achieve .
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Denis
No reviews yet
Extension Builder in Castelnau
Hi. My name is Denis. I worked as foreman over 10 years, building extensions, loft conversions,etc. I am multiskiled tradesmen ,I do work that involves ground work, bricklaying,roofing, rendering, plastering, screeding and much more. I can provide fotos of the work I have done but also the contact number of my previous boss that can confirm everything I said. I have car also the tools needed for the job. Please do not hesitate to contact me as I am ready to start at any time. Thank you 😊
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Rrapi LTD
No reviews yet
Extension Builder in Castelnau
Rrapi Ltd has over 20 years experience in the construction industry , a specialist contractor delivering high-quality Groundwork’s, Basement, New Build, Demolition , and Reinforced Concrete solutions, particularly for Commercial and Residential projects in London and surrounding areas. As a CHAS accredited contractor, we ensure the highest standards of safety and compliance on all sites We understand the challenges of complex, tight-access sites and pride ourselves on delivering safe, high-precision, and reliable structural work. Groundwork’s Basement’s New Build Underpinning Demolition Civil & Concrete Frames
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H&V carpentry joinery ltd
No reviews yet
Extension Builder in Castelnau
Refurbishments, extensions, Landscaping
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DWELLING DESIGN AND DEVELOPERS LIMITED
Rating: 5 out of 5
Extension Builder in Castelnau
We operate in the construction industry. We have highly satisfied customers and we thrive on our work quality. We are based in London and cover all around the UK. We are customer and quality focused builders so no job is too small or too big for us. We deal with commercial and private properties. All our jobs are well managed and are finished to high standards. We have a highly friendly large group of workers and we take care of all our clients needs & make their dream homes come to life.
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Latest review:
Extensions- 19 Jul 2021
Jitender/Tinku and his team were excellent from the first time we met. They provided us with ideas to better our layouts, helped with sourcing a number items and put us in contact with suppliers which helped us achieve more competitive prices. I was kept updated with the progress regularly and most importantly the project was completed on time and within budget. Shah Builders take real pride in their work and it shows in the finished product. We are very pleased with the outcome of the project and have recommended Shah Builders to friends and family.

4.2

Top rated Extension Builders

Our Extension Builders in Castelnau, are rated 4.2 out of 5 based on 20 reviews from customers like you.

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

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 Castelnau 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 Castelnau who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Castelnau?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Castelnau 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 Castelnau extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Castelnau home extension project is likely to cost.

Find extension builders in Castelnau with MyBuilder

Hiring the right extension builder in Castelnau 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 Castelnau extension builders. Once your job is live, we’ll share it with home extension builders in Castelnau who can express their interest.

Step 2: Compare different extension builders in Castelnau

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

Step 3: Hire Castelnau extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Castelnau, 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.

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

What to ask a Castelnau extension builder before hiring?

Before hiring an extension builder in Castelnau or extension building company in Castelnau, 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 Castelnau?

An extension builder in Castelnau 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 Castelnau 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 Castelnau?

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 Castelnau 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 Castelnau 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 Castelnau

Can an extension builder in Castelnau help with planning permission?

Yes, many extension builders in Castelnau 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 Castelnau handle everything from design to construction?

Many Castelnau 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 Castelnau help with materials and finishes?

Yes, most extension builders in Castelnau 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.