Extension Builders in Millwall

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (19 reviews)

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Some of our top rated extension builders in Millwall

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B&T LINE LTD
Rating: 4.9 out of 5
Extension Builder in Millwall
B&T LINE LTD is a construction company focusing on property renovation and property refurbishment services to clients in London and surrounding areas. Our workers are skilled and motivated people who act with integrity and are inspired to deliver a customer experience of excellent quality.
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Latest review:
Handyman- 2 Apr 2026
Speedy appointment.Arrived on time. Clean, neat worker, respectful of property. Really professional. Pleased with both jobs completed. Highly recommend.
Shpati Construction Ltd
Rating: 4.9 out of 5
Extension Builder in Millwall
Myself and my team have over 20 years of experience in the building sector. We deliver the highest standard of quality in every job to meet our clients expectations and turn their dreams into reality. We cover ALL areas across London and can provide you with job references and photos if you wish to.
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Latest review:
Tiling- 3 Oct 2018
Goni and his team did a fantastic job. He came around to quote promptly, and the quote was competitive. The tiling itself was done to an exceptionally high stand with a precise eye for detail. He also did a couple of other extra jobs - fitting a doorstop, replacing a radiator so the tiling was perfect, and fitting a tiled upstand where the old skirting boards were. I am deeply impressed and have no hesitation in recommending Goni.
Gursevaksingh
Rating: 5 out of 5
Extension Builder in Millwall
Gursevak projects limited For more information about our quality and work follow us on instagram and TikTok @gursevakprojectsltd. myself gursevak Singh. We have more than 5 year experience. We are specialist to providing any kind of house work like digging, foundation,loft conversion, house extensions, bathroom works,paint,tiling paving ,patio slabs etc near london. We are given one year guarantee and good quality of work with good price. thank u
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Latest review:
Plastering- 18 Feb 2025
Came to look at the job thoroughly and gave me options. I thought the quote was thoughtful. The guys that visited made me feel confident they knowledgeable and would get the job done as specified. Work completed to high standard, cleared up after themselves. Great job
ELB Construction services LTD
Rating: 5 out of 5
Extension Builder in Millwall
Established, respectable construction company which specialises in all aspects of building. we pride ourselves on giving clients a personal touch. Seeing you’re project through from getting planning permission to completing works to a hi spec finish. new builds loft conversions house extensions refurbishments Basements All type of general building undertaken
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Latest review:
Extensions- 23 Dec 2022
ELB Construction completed some major garden works for me and constructed a garden office. It was a big piece of work with a lot of earth moving, significant foundations and a lot of brickwork. The ELB team, specifically Jimmy the site manager, were fantastic, always giving me the right advice about things I was not knowledgeable about, always focussed on a quality finish and flexible when we had some challenges with our neighbours. The finish is great, communication was always open and honest and they were very competitively priced. My brother in law is in corporate construction and was specifically very impressed with the quality of the brickwork that Jimmy and the team produced. Thank you to the whole team!
AJ REFURB SPECIALIST LTD
Rating: 5 out of 5
Extension Builder in Millwall
With over 20 years of experience in the building industry, we have honed our skills to handle projects of all sizes. Our commitment to quality and craftsmanship ensures that every job is completed to the highest standards,
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Latest review:
Bathroom Fitting- 21 Jun 2025
Great company, attention to detail & Joe went over & above. I would recommend them highly. Thanks for such an awesome renovation, hope to do future projects with you 😊
MMDesigns
No reviews yet
Extension Builder in Millwall
ARB/RIBA Chartered Architect with 7 years of experience in residential and educational projects from small to medium-sized. All projects have been UK based on meeting all the building regulations and other relevant standards. It's been amazing to work with private clients as well as local authorities and housing developers. Feel free to contact me if you have any questions or projects that need looking over.
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2bros brick genius
No reviews yet
Extension Builder in Millwall
Hi my name is Dio. I got 5 years experience of doing brick work I can do small jobs like garnden walls to bigger jobs like extensions and houses I always work safely I don’t mind talking and explain to customers anything they want to know before and during the work .
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Marangoni Construction
Rating: 5 out of 5
Extension Builder in Millwall
We are dedicated to building quality projects and our wealth of experience and efficient working methods mean that with us on board, you get more - more choice, more cost savings and a quicker turnaround.We are a hard workers,good organiser,sociable,loyality,honest
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Latest review:
Hard working and experienced professional with large experience in mid-sized residential projects. Dyone always tries to go the extra mile to please the client. He has worked in several European countries giving him access to better knowledge of materials and suppliers. Great to work with.
HOMES ON DEMAND DEVELOPMENT PROJECTS LTD
Rating: 5 out of 5
Extension Builder in Millwall
Main works are extentions covering all aspects such as Kitchen, Bathroom installs, Plastering, Studwalls, Lay various styles of flooring. We do all aspects of electric works even the smallest sides such as changing face plates to a full rewire.
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Latest review:
His workmanship was excellent as to was the professional attitude he displayed throughout the job. And last but not least his reliability was 100%.
pmlarc
Rating: 5 out of 5
Extension Builder in Millwall
We are RIBA registered architects with a wide range of experience of over 25 years within architecture, design and construction. We are experienced at new builds, full refurbishments, extensions and conversions, and have completed numerous residential and commercial projects in London and beyond.
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Latest review:
Architecture- 13 Apr 2015
We are extremely happy we chose to use Phil for our loft and extension design. Phil is professional, extremely accommodating and a pleasure to work with. He was always contactable, punctual and happy to spend a lot of time with us to discuss designs and the planning process. His design ideas were smart and he presented us with a number of workable options. We wouldn’t hesitate recommend Phil and would certainly use again for any architectural works.
Artizan landscapers ltd
Rating: 4.9 out of 5
Extension Builder in Millwall
I have been doing garderning for over 20 years i have 8 certificates in gardening i have done domestic gardens and comerecial gardens
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Latest review:
Garden Maintenance- 2 May 2026
A++
Imperium Works Ltd
Rating: 5 out of 5
Extension Builder in Millwall
Call us today and bring our project management skills and extensive construction experience to your next project. We offer an end-to-end client experience that includes seamless communication, budgeting, staffing, on-site organization, and solid, quality handiwork every time. We charge people who call us for advice.
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Latest review:
Extensions- 27 May 2022
Imperium Works Ltd was absolutely wonderful to work with on our new beautiful extension. They always kept in constant communication with us and kept to very organised timeline and paid any attention to every details. They were all fantastic with other contractors. Also they were very considerable to me and my wife every day. I strongly recommend Imperium works Ltd to anyone looking to build or refurbishment or ANYTHING. We will ask them again for other job after Summer. Once again we are very happy with our new extension
PRECISION BUILDING AND DEVELOPMENT LTD
New on MyBuilder
Extension Builder in Millwall
Precision Building & Development is an established London building and refurbishment contractor, specialising in high-quality residential projects since 2015. We undertake full refurbishments, extensions, loft conversions, structural alterations and renovations, working with homeowners, architects and designers to deliver projects from preparation through to completion. Our experienced team provides a professional and organised service, with a strong focus on quality workmanship, attention to detail, clear communication and reliable project management. We understand that building work is a significant investment, so we provide clear quotations and scopes of work, keeping our clients informed throughout the project. Our services include: • Full house & flat refurbishments • Extensions and structural alterations • Loft conversions • Steelwork and structural works • Kitchen & bathroom renovations • Internal remodelling • Plastering & decorating • Roofing and external works Whether you are planning a complete refurbishment, extension or structural renovation, we aim to deliver a high standard of workmanship and a professionally managed project from start to finish. Quality, reliability and attention to detail is our core
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Construction
Rating: 5 out of 5
Extension Builder in Millwall
Carpenter Joiner:level 2 Diploma (blue CSCS) 10 years experience in UK 10 years experience back home (Romania) Level 2 Diploma in Electrical &Electronic Engineering Technology (QCF) CERTIFICATE of Attendance Waterproofing in Buildings (Delta Membrane Systems) Certificate of Attendance GRP Roofing (fibreglass flat roof installation) Construction Industry Scheme (sole trader registered)
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Latest review:
Carpentry- 17 Sep 2021
Viorel quoted promptly, arrived on time and did a a great job of the required carpentry jobs at my house - a cat flap and alterations to cupboards. I'm already talking with him about doing other jobs in the future so would definitely recommend Viorel!
DR PROGRESSIVE BUILDING LTD
Rating: 5 out of 5
Extension Builder in Millwall
We are reliable and friendly company for domestic and commercial projects. We can undertake all aspects of building including new builds, extensions and loft conversions, house refurbish, fitting kitchens and bathrooms and a whole range of larger home improvements. Our aim is to deliver a high quality of service that meets your needs and your budget.
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Latest review:
Kitchen Fitting- 27 Feb 2026
Worked really hard and did a great job. Would recommend Darek for any refurb job.
Sams
Rating: 5 out of 5
Extension Builder in Millwall
Experiences Multi-Trade Builder- 25+ years in Construction . With over two decades of hands on experience in the construction industry, I deliver high quality workmanship across a wide range of trades. My skills cover every aspect of building and property improvement, including: - Plastering & Painting (Flawless finishes and attention to detail) -Tiling & Screeding (Precision work for long lasting, attractive surfaces) - Carpentry (Custom solutions for interiors and exteriors) -Groundwork (Block paving, fencing, and landscaping projects. - General Handyman Services (efficient solutions for any repair, installation or maintenance need. I pride myself on reliability, clear communication, and a strong commitment to customer satisfaction. Whether it's a small repair or full renovation, I bring the same level of care and professionalism to every project.
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Latest review:
Fencing- 2 Apr 2026
Clear communication and used good quality materials for the job. Highly recommended.

3.7

Top rated Extension Builders

Our Extension Builders in Millwall, are rated 3.7 out of 5 based on 19 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Millwall?

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

Find extension builders in Millwall with MyBuilder

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

Step 2: Compare different extension builders in Millwall

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

Step 3: Hire Millwall extension builders with confidence

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

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

What to ask a Millwall extension builder before hiring?

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

An extension builder in Millwall 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 Millwall 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 Millwall?

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 Millwall 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 Millwall 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 Millwall

Can an extension builder in Millwall help with planning permission?

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

Many Millwall 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 Millwall help with materials and finishes?

Yes, most extension builders in Millwall 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.