Extension Builders in Southgate

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (16 reviews)

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Some of our top rated extension builders in Southgate

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Adam Renovations Ltd
Rating: 5 out of 5
Extension Builder in Southgate
Adam Group Ltd is an established residential construction and development company, incorporated in 2010, specialising in high-quality refurbishments, extensions, loft conversions and new build projects across London and the South East. We work with homeowners, investors and local authorities on projects ranging from £150,000 to £3 million, covering everything from full house refurbishments and structural reconfigurations to large-scale extensions, loft conversions and ground-up developments. Since inception, we have successfully delivered over 250 projects, building a strong track record for reliability, quality and consistent delivery. In 2025 alone, the company achieved a turnover of £4.5 million, reflecting both our capacity and the level of projects we undertake. Our team provides an end-to-end service, including planning coordination, structural works and full construction delivery. We are experienced in working alongside architects, engineers and local authorities to ensure projects run smoothly and comply with all regulatory requirements. We maintain a 4.9-star rating on Google, with the majority of our work coming from repeat clients and referrals — a testament to our professional approach, clear communication and attention to detail. If you are planning a refurbishment, extension or new build and want a contractor with a proven track record and the capability to deliver complex residential projects, we would be happy to discuss your requirements.
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Latest review:
Loft Conversion- 5 May 2017
Artjom and his team have done a wonerful job on our loft conversion and house renovation. We are very pleased at the transformation. Although not the cheapest quote we obtained, they were highly professional, kept the noise down and cleaned up after themselves. We also added several other jobs to our initial quote and they undertook these as requested. It is important to keep a record of everything you ask to be done. They worked very fast and were able to complete everything within 2 months - it helped that our house was empty at the time, so they didn't have to deal with us living there at the same time as the works were being carried out. Overall, I would highly recommend Adam Renovations for any building works you need done to your property.
Watan
Rating: 4.5 out of 5
Extension Builder in Southgate
Hi everyone, Here at Watan Building & Renovation Ltd we undertake all aspects of domestic construction works. We have been trading for over 10 years, we are happy to give advice and free estimate on your work so please get in touch.we carry out all works on domestic buildings such as: Full house renovation, Bathroom, Kitchen, plastering, Flooring, Rendering Decorating, Electric, Plumbing (gas safe) Chimney removal, Fencing, Extension with a fantastic quality work and reasonable price.
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Latest review:
Plastering- 28 Jul 2025
Watan and his worker did a fantastic job on the lime plastering, will certainly be using in future. Extremely affordable and professional with clear communication throughout.
KFN Plastering & Property Maintenance
Rating: 4.8 out of 5
Extension Builder in Southgate
KFN Plastering & Property Maintenance is a trusted and professional company with over 18 years of industry experience. Based in Watford, we take pride in delivering exceptional workmanship, attention to detail, and outstanding customer service on every project. Fully vetted and committed to the highest standards, we provide reliable plastering and property maintenance services tailored to meet our clients’ needs. Whether undertaking small repairs or larger renovation projects, we consistently deliver a high-quality finish with a focus on professionalism, cleanliness, and customer satisfaction.L
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Latest review:
Plastering- 29 Mar 2024
Confronted with a difficult narrow stairwell and hall for access, the guys worked hard and overcame all obstacles. A high standard of finish and cleaned up afterwards. I highly recommend them, and will contact Karl again for future work.
Ethan ansell
Rating: 5 out of 5
Extension Builder in Southgate
Hello im Ethan, a fullyqualified bricklayer with 15 years experience of erecting brickwork. I am very proud of every job i have carried out and i build with pride. I ensure nothing less then the highest quality of work and a fully satisfied customer. I look foward to building for you whoever you are.
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Latest review:
Bricklaying- 8 May 2021
Ethan did an excellent job for us today. Very impressive brickwork. Nice friendly guy and left the place clean and tidy after finishing. Will not hesitate to use him again for future work.
Brits construction ltd
Rating: 5 out of 5
Extension Builder in Southgate
Brits has vast knowledge & experience of residential projects and has built several Modern Loft conversions, Major Side & Rear Extensions and whole house Internal Refurbishments. We Offer; Project Management. Program of works. Regular Meetings with the client. Liaise with the local authorities. We execute Projects on time, within budget and with the highest quality. Best housekeeping and H&S Standards. Employees & Public Liability Insurances. Member of FMB, LABC, Trust Mark, NABC
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Latest review:
Extensions- 21 Jul 2023
We had a loft conversion and a 9x3m rear extension constructed. We also had underfloor heating, flooring, a new staircase and air con installed. We are happy with the result and would recommend this company. They have also respected warranty and fixed issues that have come up after construction and decorating work completed.
Anji construction ltd
Rating: 4.7 out of 5
Extension Builder in Southgate
I am writing to express my interest in offering my extensive experience in the construction industry for any upcoming projects you may have. With over 14 years of experience in the field, I have honed my skills in all types of construction jobs. From building new structures to renovating existing ones, I have a proven track record of delivering high-quality work on time and within budget. My attention to detail, reliable work ethic, and commitment to excellence have earned me a reputation for being a skilled and dependable builder. I am confident that my expertise aligns well with the requirements of your upcoming projects, and I am eager to bring my skills to your team. I am dedicated to providing exceptional service and ensuring client satisfaction throughout every stage of the construction process. I would welcome the opportunity to discuss how I can contribute to the success of your projects further. Please feel free to contact me at your convenience to arrange a meeting or discuss any potential collaboration.
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Latest review:
Groundwork & Foundations- 4 Mar 2026
Yas and the team were very communicative and professional throughout, they completed a very large 20m x 6m base over two gardens for a wooden pergola. They completed work in a very effecient and professional manner. Would highly recommend Anji Construction to everyone. Thank you for your hard work.
PRASH DEVELOPMENTS LIMITED
Rating: 5 out of 5
Extension Builder in Southgate
PRASH DEVELOPMENTS LTD specialises in construction of Large Luxury New build Home, HMO & Flat developments, Extensions and Loft conversions We are team of skilled professional with 13 years of combined experiences. We pride ourselves in offering best quality hassle free service with effective pricing and timely delivery. Please feel free to contact us for any construction related information.
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Latest review:
The builders were in time and a great job done in one day when others quoted for 3 days job — all done with great professionalism and satisfaction — will give them 10⭐️
DMG builders
No reviews yet
Extension Builder in Southgate
Hi This is Mohammad I have done this job over 10 years I happy to help clients doing there jobs and get them the highest quality of finishing
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Rowe General Builders
No reviews yet
Extension Builder in Southgate
Hello, my name is Andrew, I have been in the building trade for 40 years. I offer a professional, top quality, customer focused service and pride myself on excellent workmanship, reliability and honesty. Specialising in extensions, kitchens, bathrooms, refurbishments and covering all other general building disciplines. I cover a wide variety of work including; Refurbishments Plastering Kitchen fitting Bathrooms Bricklaying Roofing Decorating Gardens Tiling Fencing All general building work undertaken, no job is too big or small. Please feel free to contact me for a free estimate.
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KG BUILD
Rating: 5 out of 5
Extension Builder in Southgate
With your specifications and our expertise, we happily take on any building work and produce excellent results. Extensions, Loft conversions, kitchens, bathrooms, garden rooms/studios/outbuildings, roofing, flooring, carpentry and joinery etc
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Latest review:
Carpentry- 13 Dec 2025
Kwame did a great job and was thoughtful, communicative and very skilled with the work he was carrying out on our joists. I would recommend KG build to anyone looking for a good price and a high standard of work.
Walker Building and Carpentry
Rating: 5 out of 5
Extension Builder in Southgate
I’m a carpenter and general builder who’s been working in and around the local area with 15+ years experience, I’m hard working, friendly, reliable and I take a lot of pride in my work. I am family man at heart who enjoys sharing my passion for football with my son, reading with my daughter, and when I get a chance enjoy the odd pint in the local pub.
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Latest review:
Carpentry- 21 Jan 2020
The job that Thomas Walker completed for me was an extremely difficult, however he was an excellent professional and completed the job which exceeded my expectations. He also offered to help with getting discounts on materials. I would definitely recommend A***
D&T building company
No reviews yet
Extension Builder in Southgate
we are proud to announce to you D&T building company we cover all building work from wall repairs to full extensions, driveways, built BBQ’s, out houses, converting rooms into gyms and fencing, with over 20 years experience and a high standard of work, because of the pandemic and things slowing down it is time for us to branch out to new areas and new people, our portfolio is very large with 100% customer satisfaction and a very friendly team that can carry out all your needs
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B & I CONSTRUCTION LTD
No reviews yet
Extension Builder in Southgate
WE ARE A NEW COMPANY IN THE MARKET SINCE OCT 2017 AND HAVE BEEN SUCCESSFULLY FINISHING EXTENSIONS AND REFURBISHMENT AROUND LONDON. WE UNDERTAKE THE TYPES OF WORK LISTED BELOW AND GUARANTEE THE HIGHEST STANDARD AS WELL AS TIME EFFICIENCY WHEN TAKING UP A PROJECT. OUR TEAM IS MADE UP OF SPECIALISTS AS WELL AS LABOR WHO HAVE BEEN WORKING IN THIS INDUSTRY FOR MORE THAN 5/10 YEARS. SINCE OCTOBER 2017 WE ARE ABLE TO DEMONSTRATE OUR EXCELLENT WORK VIA PICTURES AND TESTIMONIALS FROM OUR HAPPY CLIENTS.
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Arben Hoxha
No reviews yet
Extension Builder in Southgate
I am Arben and have over 20 years of experience with internal and external work. I specialise in extensions, decking, carpentry, bathroom and kitchen fitting and handyman work. I offer many suggestions and options along with my quotes to give you the best possible outcome.
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Bros con limited
Rating: 5 out of 5
Extension Builder in Southgate
experience in both commercial and private property renovations specializing in Extensions, House refurbishment, Loft and Garage conversions, Driveways and Patios. Please get in touch for a friendly free-of-charge no obligation consultation. Many thanks, Teodor
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Latest review:
I received quotes from multiple builders to build a garden office, and choose Teodor as he provided the best quote. His workmanship is top quality and he built me a fantastic garden office which I am enjoying immensely. Teodor was very professional and reliable, keeping me involved throughout the whole project. I will be using his services again in the New Year and can wholeheartedly recommend Teodor.
GDR construction solution ltd
Rating: 5 out of 5
Extension Builder in Southgate
GDR Construction Solution Ltd provides a wide range of construction, repair, and improvement services for residential customers. and there is no project too big or small for our team. We are dedicated to delivering superior results at affordable prices,
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Latest review:
He done loft conversion which he did a great job. Completed it in 6 months which in 2 months less agreement. He kept it well done tidy. He done what we had asked to do and completed on. He had a good customer service easy to contact and sort out any issue. I would recommend him to anyone for his work.

3.9

Top rated Extension Builders

Our Extension Builders in Southgate, are rated 3.9 out of 5 based on 16 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Southgate?

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

Find extension builders in Southgate with MyBuilder

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

Step 2: Compare different extension builders in Southgate

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

Step 3: Hire Southgate extension builders with confidence

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

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

What to ask a Southgate extension builder before hiring?

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

An extension builder in Southgate 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 Southgate 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 Southgate?

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 Southgate 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 Southgate 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 Southgate

Can an extension builder in Southgate help with planning permission?

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

Many Southgate 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 Southgate help with materials and finishes?

Yes, most extension builders in Southgate 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.