Extension Builders in Marylebone, North London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (17 reviews)

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Some of our top rated extension builders in Marylebone, North London

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Grandline Surveyors Ltd
No reviews yet
Extension Builder in Marylebone, North London
Specialist Party Wall Surveyors | Serving London & the Surrounding Areas At Grandline Party Wall Services, we make the party wall process simple, clear, and stress-free for homeowners, developers, and neighbours alike. With over 10 years of hands-on experience, we specialise in: Serving and responding to Party Wall Notices Acting as Agreed Surveyors or as part of a two-surveyor process Preparing Schedules of Condition Drafting and negotiating Party Wall Awards Advising on basement extensions, lofts and extensions We’ve helped 100s of clients navigate party wall matters with clarity and confidence, from first-time renovators to seasoned developers. Our approach is professional but down-to-earth: no jargon, no drama, just solid advice and fast, fair resolutions. We’re always happy to chat through your plans and let you know whether the Party Wall Act applies. No charge, no obligation. 🟩 Fully insured 🟩 Quick turnarounds 🟩 Friendly, fixed-fee pricing available 📍 Based in East London and covering all London boroughs and the M25 area. Let’s get your project moving the right way. 📞 Get in touch for a free consultation today.
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Hunter builders LTD
No reviews yet
Extension Builder in Marylebone, North London
Hi I am builder always ready anytime to build your dream house Thank you
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Zahid
No reviews yet
Extension Builder in Marylebone, North London
Plastering
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Woodford Construction Services Ltd
No reviews yet
Extension Builder in Marylebone, North London
Woodford Construction Services Ltd (WCSL) is a building, construction, and refurbishment company, which has been established for more than 25 years. As reputable building contractor, WCSL is able to offer a wealth of experience, having undertaken a broad spectrum of projects in the past. From small residential refurbishments, to large scale, high-value commercial developments, we are confident that we can provide the skills and services that your building project will require. WCSL offer a range of construction services, from architecture and interior design, to building and refurbishment. We have established and developed a diverse variety of expertise, which can be evidenced through our extensive portfolio of previous commissions. From minor alterations, to larger home builds, we have previously taken on a variety of internal and external residential projects. These have included extensions, loft conversions, and various internal refurbishments, including interior fit outs. We have also been involved in a wide range of commercial construction projects. This has ranged from new build construction, to the extensive refurbishment of flats, houses, offices and industrial units.
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AM Painter & Decorator
No reviews yet
Extension Builder in Marylebone, North London
I have over 20years experience as a painter and decorator. All my work is finished with a high quality, work is finished on time. I take great care in my work so that my customers are satisfied and come back to me. Previous work has involved painting houses, flats, apartments and offices. In and around London.
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Builders of London Ltd
New on MyBuilder
Extension Builder in Marylebone, North London
Services – Builders of London LTD General Building Services * New builds * Property renovations * Full house refurbishments * Structural alterations * Internal and external building works * General construction projects * Property maintenance and repairs Extensions & Conversions * House extensions * Rear extensions * Side return extensions * Double-storey extensions * Loft conversions * Garage conversions * Basement conversions Kitchen & Bathroom Services * Kitchen fitting and installation * Bespoke kitchen renovations * Bathroom installation * Wet rooms * Plumbing and tiling * Bathroom refurbishments Carpentry & Joinery * First fix carpentry * Second fix carpentry * Bespoke joinery * Doors and frames * Flooring installation * Staircases * Wardrobes and storage solutions Flooring & Interior Finishes * Hardwood flooring * Laminate flooring * Vinyl flooring * Tiling * Painting and decorating * Plastering and rendering * Drylining Electrical & Plumbing * Electrical installations * Rewiring * Lighting installation * Fuse board upgrades * Plumbing services * Heating systems * Underfloor heating Roofing & Exterior Work * Roofing repairs * New roof installations * Flat roofs * Guttering and fascias * Brickwork * Repointing * External rendering * Exterior painting Outdoor & Landscaping * Garden landscaping * Patios and paving * Driveways * Fencing * Decking * Outdoor structures Commercial Services * Office refurbishments * Shop fitting * Commercial maintenance * Commercial renovations Specialist Services * Project management * Design and build * Custom construction solutions * Insurance repair works * End-of-tenancy refurbishments
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Aston Brickwork
Rating: 5 out of 5
Extension Builder in Marylebone, North London
My name is Sean Aston I have been a bricklayer for 6 years now. I have all kinds of experience, from working on a large construction site to smaller jobs such as extensions ,porch's and garden walls. Any and all tradesmen I use will be full qualified I also have all relevant insurance .
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Latest review:
Bricklaying- 30 May 2019
Sean was on time and very polite at all times. He completed the work very efficiently with no disruption whatsoever. He went out of his way to make sure the job was completed to our satisfaction. He cleared up afterwards and left the site very tidy. We would happily recommend Sean.
Bartosz
No reviews yet
Extension Builder in Marylebone, North London
20 years in construction business Full refurbishments , lofts , extensions , bathrooms , garden works
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Calibra damp proofing LTD
No reviews yet
Extension Builder in Marylebone, North London
Welcome to Calibra we are a family run company specialising in architectural services , damp proofing , general building & a bespoke design and build services all these services under one roof to bring you a seamless service you will be sure to recommend
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Robi paiting decorator
No reviews yet
Extension Builder in Marylebone, North London
We perform work reliably and to a high standard
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London Brickwork and Paving Ltd
No reviews yet
Extension Builder in Marylebone, North London
We are a London based construction company with over 16 years experience in the industry that specialise in all aspects of Brickwork and Paving, carrying out work on both domestic and commercial properties. Our objective is to help turn your visions into reality
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Domestic maintenance Services
No reviews yet
Extension Builder in Marylebone, North London
I have been in the building trade since 1990 . I have undertaken almost all there is in the building trade. If I get stuck I have people in all trades that could help out at no extra cost.
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Orville
No reviews yet
Extension Builder in Marylebone, North London
I'ev been doind and decorating for over 15 years, there is no job too big or too small that i won't be able to do . I'm very hard worker, honest, reliable, I always ensure any job I started is complete to perfection. I do all my jobs to the best of my ability , I always ensure any job I started is complete within the required time frame. I cam travel up to a 2 hours from my location to work
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Gesas-Ambition Limited
Rating: 5 out of 5
Extension Builder in Marylebone, North London
Groundworks, Foundations, Block and Beam , Reinforced concrete, Hard landscaping, Excavations ,Drainage, New build , Extensions, Full house renovations -All sorted
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Latest review:
Groundwork & Foundations- 2 Dec 2025
Working with Sebastian and Jonny was an absolute pleasure from start to finish. From day one, it was clear they and their team take genuine pride in their work and it shows in what they do. The entire team was incredibly courteous and professional, and as we have a mid terraced house they did their best keeping the hallway clean and dust free throughout the project. The quality of their work speaks for itself, and their attention to detail made the whole experience stress-free. I would highly recommend them without hesitation and would absolutely work with them again.
The Architectural Design Syndicate Ltd
No reviews yet
Extension Builder in Marylebone, North London
We are a multi-disciplinary group of architectural designers, structural engineers, interior designers,builders and support staff. Our backgrounds span residential extensions, commercial developments, restaurants, and bespoke interior schemes. Across projects big and small, our collaborative process is shaped by mutual respect, timely advice, and real technical depth.
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Vertex Projects
No reviews yet
Extension Builder in Marylebone, North London
Vertex Projects is a professional and trusted construction partner dedicated to bringing your vision to life. We specialise in a comprehensive range of services, including painting and decorating, building extensions, expert demolition, and plastering. Our expertise also extends to new fencing and the custom construction of bespoke balconies. At Vertex Projects, we pride ourselves on being a respectful team that treats every home and site with care, ensuring high-quality craftsmanship and a seamless experience from start to finish.
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Top rated Extension Builders

Our Extension Builders in Marylebone, North London, are rated 4 out of 5 based on 17 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 Marylebone, North London?

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 Marylebone, North London 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 Marylebone, North London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Marylebone, North London?

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

Find extension builders in Marylebone, North London with MyBuilder

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

Step 2: Compare different extension builders in Marylebone, North London

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

Step 3: Hire Marylebone, North London extension builders with confidence

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

Marylebone, North London extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Marylebone, North London extension builder before hiring?

Before hiring an extension builder in Marylebone, North London or extension building company in Marylebone, North London, 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 Marylebone, North London?

An extension builder in Marylebone, North London 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 Marylebone, North London 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 Marylebone, North London?

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 Marylebone, North London 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 Marylebone, North London 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 Marylebone, North London

Can an extension builder in Marylebone, North London help with planning permission?

Yes, many extension builders in Marylebone, North London 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 Marylebone, North London handle everything from design to construction?

Many Marylebone, North London 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 Marylebone, North London help with materials and finishes?

Yes, most extension builders in Marylebone, North London 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.