Extension Builders in Northwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (13 reviews)

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

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 Northwood

2623 Results

Sort by:

Star link
No reviews yet
Extension Builder in Northwood
I have experience team for all types of construction work
Get in touch
Stonehouse 300 Ltd
No reviews yet
Extension Builder in Northwood
A recently formed limited company with nearly two decades of experience, we specialize in the construction of both commercial and domestic buildings, as well as a range of other construction installations such as extensions, kitchens, bathrooms and more. What sets us apart from the rest is our dedicated team of over 20 skilled workers, who blend their expertise with our years of industry knowledge to deliver unparalleled quality and innovation in every project we undertake.
Get in touch
7 builders
No reviews yet
Extension Builder in Northwood
House extension, loft conversion, maintenance, plumbing, electric
Get in touch
Johnny
No reviews yet
Extension Builder in Northwood
Ground works,rc frame,refurbishing,extension,
Get in touch
Scw Brickwork
No reviews yet
Extension Builder in Northwood
I am a bricklayer with 20yrs experience. I undertake anything brickwork related. New builds, extensions, conservatory’s, repointing, alterations, repairs and garden walls.
Get in touch
SKCL Ltd
No reviews yet
Extension Builder in Northwood
Empire building contractors offer a quality service and fantastic workmanship from my fully qualified tradesmen we offer everything from building you a house, extension or full house renovations and everything in-between. We are based in Wing, Buckinghamshire. we are fully insured and have been in business 17 years.
Get in touch
Kingsmarque construction and maintenance
Rating: 5 out of 5
Extension Builder in Northwood
All building work taken on, slating and tiling, house renovations and extensions. We have a team of tilers, renderers, plumbers, painters and myself and business partner who run each job and manage the multiple trades required.
Get in touch
Latest review:
Extensions- 25 Aug 2020
Really professional and quick to provide quotes. Unfortunately, due to COVID and our circumstances changing, we have had to cancel the job. We would definitely go back to them in the future though.
Richards Property development
No reviews yet
Extension Builder in Northwood
I am very hard working, trustworthy Professional skilled tradesman with over 25 years experience. I have got experience in all building projects from fitting kitchen, Bathroom, shower rooms - Bespoke Wardrobe Fitter - Floor and Wall Tiling - Paint & Decorating - Laminate, Wood and Carpet Fitter - Specialist in interior design - Complete house Refurbishment - Furniture assembly
Get in touch
MKL home
No reviews yet
Extension Builder in Northwood
As a dynamic family team, we bring years of experience and craftsmanship to your home improvement projects. With a skilled and experienced bricklayer, we deliver top-quality masonry work — from strong garden walls and decorative brickwork to patios, pathways, paving and slabs. We also specialise in fence installation and repair, ensuring durable, secure, and long-lasting results for any outdoor space. In addition to construction, we offer post-building cleaning, making sure your property is left clean, tidy, and ready to use after any project. We approach every job with precision and attention to detail. For us, this isn’t just work — it’s our passion.
Get in touch
Maskuri Limited
No reviews yet
Extension Builder in Northwood
We are a team of experienced and skilled professionals. Over the twelve years of experience step by step we developed and became a company. Many of our satisfied customers gave us an opportunity to say that our quality is the best. And that's why our motto is- MAKE YOUR HOUSE A HOME YOU DESERVE.
Get in touch
Smart windows
Rating: 5 out of 5
Extension Builder in Northwood
Smart windows from MKD windows Group are a family run business covering Essex and Surrey. We specialise in UPVC , Wood & Aluminium. Offering quality products at quality prices. Reliable service, no pushy salespeople just a straight forward price! Certass registered with a 10 year insurance backed guarantee.
Get in touch
Latest review:
Windows & Doors (uPVC & Metal)- 13 Mar 2026
Would highly recommend Dean, he removed my window and fitted French doors. Thank you.
BUILD SAFE LTD
Rating: 5 out of 5
Extension Builder in Northwood
Hello, We are Build Safe ltd-professional Construction Company 20 years of experience. We are proud members of Federation of Master Builders! Providing a wide range of services: Design, planning, Structural calculations, all aspects of Building works- New builds , Extensions, Loft conversions, kitchen and bathroom fitting, Window installation,refurbishments, electrical, plumbing etc. 10 years warranty and, 1m public, 5m employers liability and 1 million indemnity insurance. Please get in contact for a free quote. Thank you! Build Safe ltd
Get in touch
Latest review:
Very professional. We had quite a lot of work done. It was done in time as promised, and with great attention to detail and quality. Very happy with the results. Highly recommended.
QCS Construction Ltd
No reviews yet
Extension Builder in Northwood
QCS CONSTRUCTION ltd is a construction company based in East London and provides construction services. The team consists of high-class specialists in the field of construction with 20 years of experience. We are experts in: -House extensions -Loft conversions -Refurbishments -Garden renovations -New build -Basements By choosing us, you will receive excellent quality service for your projects.
Get in touch
Maz landscaping ltd
No reviews yet
Extension Builder in Northwood
We are a company with 10 years of experience in landscaping and building work .
Get in touch
Source facilities Maintenance
Rating: 5 out of 5
Extension Builder in Northwood
Refurbishments, Extensions, New builds, Period property, Home maintenance. Recent residential works include a new build project adjacent to a 16th century gatehouse in Epping Copped Hall, Extension and refurbishment of a house in London N5, Full refurbishment with extension in Waltham cross southfield road. We have worked for several large to medium sized companies on internal fit out contracts including a board room for waitrose and a value added facility for Wholefoods kensington.
Get in touch
Latest review:
Source FM recently helped us fit out a new 8000 sq ft warehouse in Hackney. The project included installing new electricals, installing new fire and security alarms, repairing and repainting a heavily used concrete floor, redecorating, servicing the heating etc. The project had a very tight time frame and Source FM often had to work around members of our team as we started moving in while work was still ongoing. I'm pleased to say, all the work was completed in time and to a very high standard. We've since used Paul and Bill for a number of smaller projects, both at the warehouse and in our offices.
Tori
No reviews yet
Extension Builder in Northwood
Hi, We are a small team of qualified specialists from all trades. We have successfully completed projects from kitchens, bathrooms to extensions, conversions, outbuildings and basements. Working with you to ensure at each stage you are happy with the outcome, based on how you like to use your space. We will work with you, to make the space change fit your lifestyle. Don't hesitate! Let us help you make your dream house, the home you love and live in. All the best, Tori
Get in touch

3.7

Top rated Extension Builders

Our Extension Builders in Northwood, are rated 3.7 out of 5 based on 13 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 Northwood?

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

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

What are the hourly rates of extension builders in Northwood?

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

Find extension builders in Northwood with MyBuilder

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

Step 2: Compare different extension builders in Northwood

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

Step 3: Hire Northwood extension builders with confidence

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

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

What to ask a Northwood extension builder before hiring?

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

An extension builder in Northwood 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 Northwood 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 Northwood?

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 Northwood 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 Northwood 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 Northwood

Can an extension builder in Northwood help with planning permission?

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

Many Northwood 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 Northwood help with materials and finishes?

Yes, most extension builders in Northwood 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.