Loft Conversion Companies in Northwood

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4 (7 reviews)

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Some of our top rated loft conversion companies in Northwood

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Form + Function Studio
Rating: 5 out of 5
Loft Conversion Company in Northwood
****PLEASE GOOGLE US**** Contact us via info at formfunction dot uk We are a Design & Build holding company with over 26 years of dedicated experience in architecture, interior design, structural coordination and construction. info at formfunction dot uk At Form + Function Studio, we help homeowners, landlords, developers and contractors move their projects from early concept through planning, building regulations and construction. We may not always be the lowest-cost option, but as a RIBA Chartered Practice supported by Chartered MICE engineers, we are committed to providing reliable customer service, sound technical expertise and professional support from concept to completion. -Our Services and Starting Fees- 1- Architectural Design and Planning Initial consultation or site visit, from £350 + VAT Measured survey and existing drawings, from £450 + VAT Planning drawings for small extensions, from £1,250 + VAT Householder planning application package, from £1,500 + VAT Loft conversion planning package, from £1,000 + VAT Change of use or house to flats feasibility and planning package, from £2,000 + VAT Pre-application advice package, from £750 + VAT 2- Building Regulations and Technical Design Building regulations drawings for loft conversions, from £1,500 + VAT Full technical package for extensions, including architectural details, insulation, ventilation, drainage coordination and building control liaison, from £2,500 + VAT New build or larger residential technical package, including building regulations drawings, structural design coordination, SAP, ventilation and drainage strategy, from £3,500 + VAT Approved Inspector or Building Control response package, from £1,550 + VAT Structural Design and Calculations RSJ or beam calculation, remote service where sufficient information is provided, from £450 + VAT RSJ or beam calculation, including site visit, from £850 + VAT Structural calculations for rear extensions from £850 + VAT Structural review and sign-off support for Building Control queries, from £1,550 + VAT Specialist and Supporting Services Fire safety drawings and fire strategy report, from £1,500 + VAT Drainage layout and waste pipe strategy, from £650 + VAT Ventilation strategy, from £450 + VAT SAP calculations and Part L coordination, from £450 + VAT Construction Logistics Plan or Management Plan, from £650 + VAT Section 80 demolition notice support, from £750 + VAT Interior design concept package, from £750 + VAT Detailed interior design, finishes and specification package, from £1,500 + VAT Design and Build We can also assist with construction, refurbishment, extensions, fit-out and project delivery through our construction team and trusted specialist contractors. Construction costs are priced separately following a site visit, review of the scope and confirmation of the required specification. All fees above are starting prices and may vary depending on the size of the property, complexity of the project, level of detail required, location, timescale, number of revisions and whether third-party consultants are required. Let Form + Function Studio help you turn your idea into a clear, compliant and buildable project.
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Latest review:
Architecture- 25 Jun 2026
Communication was great and the calculations were sufficient for our building control application. Nice and smooth service, exactly what we needed.
London's lofts and extensions
Rating: 5 out of 5
Loft Conversion Company in Northwood
We are a family run business, which can offer you the personal touch. We will help you transform your property into a modern everyday living space. With minimum disruption to you and your family.
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Latest review:
As an Architectral Consultant I have worked with Michael Masterson on various domestic projects, loft conversions and extensions over the last ten years. I have always found his work to be of a high standard and completed to customers satisfaction and on time.
Alex
Rating: 5 out of 5
Loft Conversion Company in Northwood
Hi I offer good quality work which includes general construction works, painting interior, exterior, walls and ceiling repair and wood work I also offer handy man jobs, decking installation and repair,groundwork jobs.
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Latest review:
Decking- 22 Jun 2026
From quotation to completion Alex could not be more helpful or efficient. His advice on selecting the correct decking timber was much appreciated. I would have no hesitation in recommending him.
Khalsa building construction ltd
Rating: 5 out of 5
Loft Conversion Company in Northwood
Hi my company name is Khalsa building construction ltd We are doing all building like lofts , extinction all renew house bathrooms
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Latest review:
Bricklaying- 5 Sep 2020
I hired Khalsa Construction to install a beam and block floor and erect walls for my extension. I ended up letting them do the whole job which included roofing, electrical, kitchen installation, plastering etc. All done to a superb standard and am very happy with the work. Vikram is a really nice honest guy who is very quiet and will go out of his way to help. He probably did much more than he should have in terms of sourcing materials which due to the virus were in short supply but he always managed to help me find what was required. I would have no hesitation in recommending Khalsa Construction and will be using them again.
Aviraj Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Northwood
We have been in the construction business over 10+ years. We specialized in complete bathroom renovation, kitchen renovation, flooring. We do extension, loft conversation, carpenter, brickwork, plastering, plumbing & all kind of general building work. We strive to provide 100% client satisfaction. We believe there is no job that can not be accomplished to customer expectation. We go extra mile to ensure that all customer needs and requirements are satisfied.
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Latest review:
Loft Conversion- 28 Dec 2023
Aviraj construction was hired by us to do a loft conversion (to include bedroom & bathroom) and also to refurbish the rest of house plastering, kitchen installation, bathroom installation, electrics, central heating/boiler and plumbing. Firstly I was impressed by how punctual they were and turned up at the agreed time at the first meeting to price the project. This was unlike other builders who either “forgot” or turned up late. The work was completed to a good standard and at no stage did Aviraj construction try and charge more than what was contractually agreed. Furthermore they were happy to fix any issues identified during the project. They were hard working, reliable and got on with the work without requiring supervision. I’ll definitely use them again on our next project! Thanks Guys appreciate all your hard work in getting the project completed.
Blueprint Developments Limited
Rating: 5 out of 5
Loft Conversion Company in Northwood
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
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Latest review:
We recently had our 3-bedroom house renovated, along with a new rear extension build and a garage conversion, and I couldn't be happier with the results. The team demonstrated exceptional craftsmanship and attention to detail throughout the project. From the initial consultation to the final handover, they were professional, reliable, and transparent about costs and timelines. The renovation completely transformed our home, enhancing both its functionality and aesthetics. The rear extension seamlessly integrates with the existing structure, creating a spacious and light-filled living area, while the garage conversion provides a versatile space we can now use as an office. The team was approachable, accommodating any changes we requested during the build, and always left the site clean and organized at the end of each day. I was particularly impressed with their ability to stay on schedule despite some challenging weather conditions. If you're looking for a dependable team that delivers quality work, I highly recommend Blueprint.
HomeDeco
Rating: 4.9 out of 5
Loft Conversion Company in Northwood
We believe that every project deserves attention to detail, quality craftsmanship, and a commitment to excellence. Whether it's construction, renovation, interior finishing, or home improvement, our goal is simple: to deliver results that exceed expectations and create spaces our clients are proud of. We are committed to completing high-quality projects on schedule and within budget while maintaining the highest standards of workmanship, safety, and reliability. We take pride in building long-lasting relationships based on trust, reliability, and customer satisfaction. Our success is measured not only by the quality of our work but also by the confidence our clients place in us. After all, happy clients become returning clients — and returning clients are the best proof of work well done :))
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Latest review:
Restoration & Refurbishment- 31 Dec 2025
Kithchen and bathroom job which on completion looked really nice however allot of issues cropped up down the line. And the aftercare is non existent We were told we would have a 1 year warranty Flashing LED kitchen cabinet downlight Kitchen plinth was not even fixed back its just propped up. Shower mixer installed with pipes the wrong way round Wobbly kitchen tap Bathroom ceiling trims visibly damaged on install where they cut in the wrong place.
PMK Electrical limited
Rating: 5 out of 5
Loft Conversion Company in Northwood
NICEIC registered, fully insured. ELECTRICAL: Rewires, new installations, lights upgrades, fault finding, maintenance, testing and inspection. PLUMBING: Sanitaryware upgrade, leaks fixing, heating systems, drains, new installations, maintenance. HANDYMAN in the team.
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Latest review:
Electrical- 31 Jan 2025
Came in, discussed the job and a few little options. Got it done in a timely fashion. Cleaned up after himself. Offered help if I have any future issues with the charger. Excellent service and will definitely recommend!
Adam Renovations Ltd
Rating: 5 out of 5
Loft Conversion Company in Northwood
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.
North Builders LTD
Rating: 4.8 out of 5
Loft Conversion Company in Northwood
North Builders LTD have a team of specialists which gives you quality and high standard work on Loft conversions, Extensions, Roofing, Renovation, Refurbishment. We based in London and we cover all M25. With the best quality work and proffesional prices on the market we managed to make happy a lot of costumers around London and not only. Our priority is the costumer to be satisfied, the project to finish in timeline and on budget. Contact us for free quotes.
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Latest review:
Loft Conversion- 2 Nov 2025
Full loft conversion with dorma. Blerim always asked the right questions and made really good suggestions. Very helpful and great quality. Would happily recommend him and his team.
Thomas Houghton
Rating: 5 out of 5
Loft Conversion Company in Northwood
Based in Chalfont St Giles, Tommy Custom Builds are your trusted local experts for all things building and renovation. From extensions and refurbishments to bathrooms and outdoor projects, we bring quality craftsmanship and a hands-on approach to every job. We're a busy, hardworking team—and that’s why you might not see much of an online presence. The truth is, we’re usually out on-site doing what we do best: building great spaces for great people. Our work speaks for itself, and our clients often come to us through word-of-mouth and long-standing relationships. If you're looking for reliable, skilled builders with a friendly attitude and a commitment to quality, give us a call. We’re here to help bring your vision to life.
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Latest review:
Carpentry- 15 Feb 2026
Thomas was brilliant On time, sheet coverage for nice clean job. New loft ladder fitted. Original entrance needed widening to accept new foldaway ladder. All carefully done. Thoroughly recommend Thomas. Smashing fella and sound worker.
Cool Dudes Construction
Rating: 5 out of 5
Loft Conversion Company in Northwood
We do all sort of house renovations including new build extensions and loft conversions , bathrooms . Your satisfaction is our job
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Latest review:
Loft Conversion- 18 Feb 2024
I wanted to express my gratitude for the exceptional work done by Cool Dudes Construction on my loft and bungalow conversion project. Despite an initial estimate of 12 wks, it was completed to a high standard within 15 wks, with only a minimal 3-wk delay due to 3rd parties (window suppliers) and the holiday season. A complex project. Full rebuild of bungalow, which included hip to gable conversion, rear loft dormer, stair, ground floor extension and full ground floor rennovations (1st & 2nd fix). Mandeep and Balwinder tackled a complex design that involved the integration of steel beams and pillars. They coordinated with various suppliers and also helped me to order skylights, windows, and doors, ensuring timely delivery and installation to keep the project on track. Team always showed professionalism, ensuring that they were always punctual, tidy, and respectful. Commitment to completing the project on time was evident, they maintained open communication throughout. One +ve aspect was their willingness to work with a private building control company that i hired, which ensured compliance with regulations. Another +ve aspect of working with them was clear payment milestones in the agreement. Payment was made on completion of milestones, which provided transparency and reassurance throughout the project. Extremely satisfied with the build and would not hesitate to recommend Cool Dudes Construction to others seeking reliable and efficient building services.
Connect Maan Builders Ltd
Rating: 5 out of 5
Loft Conversion Company in Northwood
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Latest review:
They handled the project professionally as promised, Highly Qualified team and have technically knowledge of all aspects
HWB construction
Rating: 5 out of 5
Loft Conversion Company in Northwood
Our executive team's come from diverse backgrounds such as design, engineering and management. Dedicated and focused, our vision has always been to be a dynamic and innovative organisation. The joint experience of our executive team is well over 20 years and provides us and our partners with a significant level of expertise which is applied to each project. HWB’s unique approach means we can be flexible and bespoke in all we do when delivering excellence in the construction industry.
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Latest review:
Extensions- 28 Oct 2018
We appointed HWB to carry out a full refurbishment on our house, this involved re-gutting the interior and building an extension and loft conversion plus some landscaping in the garden. We spoke to many builders but finally appointed HWB based on their previous projects and professionalism. Appointing builders for any work is always difficult however we are delighted that we went with HWB. Throughout the project they have demonstrated high levels of professionalism, were very organised and worked to very high standards. They were collaborative throughout the whole project and kept us informed at every stage. As the project developed there were some changes made and HWB were flexible and open to new instructions made by us, as well as giving us valuable advice. Farag, Ayoub and the HWB team were always available to answer any questions and provided us with constant feedback on progress as well as identify new solutions to aid the development. They have a great team of workers who work to a high standard and are supervised throughout the project. We made the right decision going with HWB Construction and have no hesitation in recommending them.
A S Builders
Rating: 5 out of 5
Loft Conversion Company in Northwood
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!
Paul Cusack
Rating: 4.9 out of 5
Loft Conversion Company in Northwood
Carpenter.20 years experience. 1st and 2nd fix, roofing, kitchen fitting. All carpentry works.
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Latest review:
Carpentry- 7 Mar 2021
Great service and value for money. We commissioned Paul to build a garden office. The job was completed in less time than originally expected and the quality of the workmanship was excellent. I have no hesitation in recommending Paul and we have already passed his details on to a neighbour who wants a garden studio built. We will also hopefully be using Paul's services again in the future on a loft conversion.

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Northwood, are rated 4 out of 5 based on 7 reviews from customers like you.

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What services are offered by loft conversion companies in Northwood?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Northwood will be able to handle multiple services, ensuring your transformed loft is fit for purpose.

Some of the services loft conversion companies can provide include:

Full loft conversions: Complete design and build projects when structural alterations are needed
Dormer loft conversions: Add extra headroom and floor space with a dormer extension
Velux or rooflight conversions: Ideal for lofts with good existing height; minimal structural change required
Hip-to-gable conversions: Extend the sloped roof to create more usable space
Mansard conversions: A major structural change offering maximum space.
Loft storage conversions: Add flooring, lighting, and insulation for clean, usable storage
Skylight or roof window fitting: Install natural light solutions like Velux windows
Staircase installation: Design and build bespoke stair access to your new loft
Insulation, heating, and ventilation upgrades: Ensure comfort and compliance with energy standards
Design and planning services: Architectural drawings, planning permission, and building regulation approval

Post your job to MyBuilder and you'll be matched with loft conversion companies in Northwood who are interested and available to help. And with the reviews of past customers and the freedom to compare the quotes of similar tradespeople, all in the same place, the ball’s in your court.

Average costs of loft conversion companies in Northwood

Loft conversions tend to be charged on a project basis, rather than by the hour, as they often involve weeks or even months of work.

The cost of your loft conversion depends on a few things, including the style of loft conversion and materials you choose and the size of your property.

That being said, here are average prices for common types of conversion work:

Full loft conversions: £45,000–£70,000+
Dormer loft conversions: £55,000–£85,000+
Velux or rooflight conversions: £25,000–£45,000
Hip-to-gable conversions: £50,000–£80,000+
Mansard conversions: £70,000–£100,000+
Loft storage conversions: £10,000–£20,000
Roof window fitting or skylight installation costs: £1,000–£2,500 per window
Staircase installation costs: £2,000–£5,000
Insulation, heating, and ventilation upgrades: £2,000–£6,000
Design and planning services: £1,500–£4,000

Take a look at our guide to loft conversion costs to get a more detailed breakdown of the different options available when using a Northwood loft conversion company.

Find a loft conversion company in Northwood with MyBuilder

When you’re planning major work like a loft conversion, you’ll want to find the right tradesperson for the job. The great news is, MyBuilder has already done all the time-consuming work for you.

All you need to do is post your job on MyBuilder, completely for free, and we’ll share it with loft conversion companies near you in and around Northwood.

Step 1: Post your job on MyBuilder

Provide a detailed description of your loft conversion project, including the type of conversion you want, any structural changes, preferred materials, and your ideal timeline. Once posted, local loft conversion companies in Northwood can view your job and register their interest.

Step 2: Review and compare Northwood loft conversion companies

Browse the profiles of interested loft conversion companies. On MyBuilder, you can view photos of previous projects alongside customer reviews, compare quotes, and see the types of conversions they specialise in.

Step 3: Contact and discuss your project

Once you’ve reviewed local Northwood loft conversion companies, you can reach out to those that interest you to ask questions, clarify details, and request more specific quotes. At this stage, be sure to discuss vital aspects like planning permission, design options, and estimated timelines to ensure the company meets your requirements.

Step 4: Hire the right Northwood loft conversion company

Once you’re satisfied with their experience, quotes, and approach, you can confirm your hire and start planning your loft conversion.

You can also take a look at our loft conversion specialist hiring guide to help inform your choice. All tradespeople undergo checks at registration - such as verifying ID documents, company details, and certifications for regulated jobs and doing skill assessments - allowing you to hire with confidence.

Questions to ask local loft conversion companies in Northwood

Choosing the right loft conversion company for your job requires finding someone who understands your home and your goals.

Find out which company can share your vision by asking the following questions:

What experience do you have with loft conversions in Northwood?

A local loft conversion company in Northwood will know the types of properties and building styles common in your area, as well as the planning and building regulations that apply. Ask about similar projects they’ve completed locally.

Are you insured, and do you offer a warranty for your work?

Insurance protects your home during the loft conversion process, while a warranty shows the company’s confidence in the quality and durability of their work.

How do you handle planning permission and building regulations?

Established loft conversion companies in Northwood should understand local planning rules and building regulations. Ask how they’ll manage permissions, inspections, and compliance to avoid delays or legal issues.

What is included in your quote?

Ensure the quote covers all essential aspects of the loft conversion: structural work, windows or skylights, staircases, insulation, labour, and any additional fees. Understanding this upfront prevents unexpected costs later.

Do you manage the project from start to finish?

Some Northwood loft conversion companies offer full project management, coordinating architects, builders, and tradespeople. Others may only handle part of the conversion. Clarifying this early on helps you understand what support to expect.

FAQ: Common questions about loft conversions in Northwood

How long does a loft conversion take?

Typically, a loft conversion can take between 6 and 12 weeks, depending on complexity, planning permissions, and any structural work required. Be sure to discuss the timeline with any potential loft conversion companies in Northwood before agreeing to start the work.

Do I need planning permission for a loft conversion in Northwood?

Many loft conversions fall under permitted development, but some require planning permission, especially if you’re adding a dormer, extending the roof, or living in a listed building. A professional Northwood loft conversion company can advise and handle permissions for you.

Will a loft conversion affect my home insurance?

Yes, you’ll need to update your home insurance to cover the conversion. Inform your provider about structural changes, additional rooms, and any changes to utilities or heating systems.

Can I stay in my home during the loft conversion?

Many loft conversions allow you to remain in your home, though noise and dust are inevitable. Some Northwood loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.