Loft Conversion Companies in Windsor

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.3 (6 reviews)

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Some of our top rated loft conversion companies in Windsor

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SKY VISTA ROOF WINDOWS LTD
Rating: 5 out of 5
Loft Conversion Company in Windsor
Sky Vista Roof Windows is a trusted partner and certified installer. They offer expert solutions for homeowners looking for top-quality, energy-efficient skylights. With certified expertise and partnerships with leading brands like VELUX, Sky Vista ensures safety and quality in every installation. Our skilled craftsmen focus on every detail. They ensure your roof window is made to the highest standards. This includes precise cuts, seamless joints, and expert finishing. Choosing Sky Vista for your roof windows is the best decision. We have certified experts and trusted partners. We ensure top quality and safety in every installation. Being FENSA and CPA-approved, and an official VELUX dealer, you can trust us. We focus on making our customers happy. Our commitment to excellence is shown in the many 5-star reviews. We tailor our services to meet your needs, offering personal solutions and dedicated service. Choosing Sky Vista means your investment is safe. We offer a 10-year warranty on our roof windows. Our products are built to last, bringing you natural light and fresh air for years.
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Latest review:
Windows & Doors (Wooden)- 8 May 2025
Great job. Straightforward and smooth process from start to finish. Perfect execution.
Calum Kennedy
Rating: 5 out of 5
Loft Conversion Company in Windsor
We are the loft conversion specialists that have transformed hundreds of homes across the south east . Creating luxurious new spaces for customers to enjoy and adding considerable value to the property . Check a trade ✅
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Latest review:
Carpentry- 4 Oct 2022
Calum was superb, came round and quoted a competitive price and was efficient, punctual, polite and helpful. Would highly recommend him and will be using him again
Ed’s loft conversions Ltd
Rating: 5 out of 5
Loft Conversion Company in Windsor
We specialise in loft conversions, Extension to a complete house refurbishment.
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Latest review:
I engaged Edi to work on a full renovation and refurbishment of a 4 bedroom detached house with front and back gardens on Blackheath’s Cator Estate. Edi did an extensive amount of work, including stripping out; plumbing; plastering; windows installation; carpentry; and decoration. In addition, after commencing the property work, once the scaffold had been erected, following sensible advice, Edi and his team replaced the roof and fully insulated the attic; fitted additional electric points; rebuilt the garden patio; and replaced the flooring throughout, in addition to other important jobs including re rendering and pointing of chimneys, building new wardrobes in the main bedrooms; and upgrading the radiators. A new kitchen, and two new bathrooms have been fitted. The kitchen redesign meant knocking through a wall with the lounge to create a larger space. Edi is a highly skilled craftsman, who thinks creatively as he works to make best use of the space, including shelf fittings, and additional lighting for example. He has built some beautiful wardrobes, and the internal decorations have brightened up what was previously a rather shabby looking house. In addition to the above, I wish to commend Edi for his professionalism, courtesy, and passion for doing the best work possible. On all the site visits I attended, and every time I spoke with him on the phone, it was striking how much he cared about the work that he was doing, his desire to ensure that the house would look the best. I always left site visits with the feeling that he cared so much about the house that he could be safely relied on to give the best advice to enable us to make the right decisions. I also noticed that Edi and his team would take the upmost care to keep the property safe, tidy and in good shape throughout the project. He can be fully trusted to look after any site he works on. He is intelligent and careful when it comes to safety and security. It has been a pleasure for Edi and his team to work with us over a period of around 6 months, and he did so much to reduce the stress of a significant project so that we could always rely on him to work methodically, patiently and sensibly, and to make best use of the resources available. His pleasantness shines through, and everyone I know who has spoken to him has always provided me with the most positive feedback I have no hesitation in recommending Edi to anyone who wishes to engage him for future projects, and is most deserving of the good words that I and others that work with him have to say about him.
Dominant construction ltd
No reviews yet
Loft Conversion Company in Windsor
Dominant Construction is a customer centric integrated building company specialising in home renovations, loft and basement conversions, and kitchen extensions. With over a decade of experience, we have designed our processes to ensure that our clients projects run smoothly - always on-time and always on-budget. We keep clear lines of communication at all times to make sure projects are collaborative and executed with our client's needs at the forefront.
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Home improvement
Rating: 4.4 out of 5
Loft Conversion Company in Windsor
“Reliable handyman with 7+ years of experience in flooring, plastering, and general home repairs. I take pride in clean work, clear communication, and finishing jobs on time. Available for small to medium projects — no job too and general plumbing
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Latest review:
Painting & Decorating- 17 Sep 2026
Sher provided a quote quickly and carried out the work within a couple of days. The cost was reasonable and the work carried out exactly as he said. Pleased with the result, will use again.
E.A.D. Contractors Limited
Rating: 5 out of 5
Loft Conversion Company in Windsor
We are a building company which specialises in loft conversion, garage conversion and refurbishment, and extensions.Also we can undertake smaller job, maintenances, kitchen fitting, bathrooms.
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Latest review:
Carpentry- 17 Jun 2026
I cannot recommend Atilla highly enough. I originally brought him in to help with the carpentry work on my house build following a full demolition. The plan was for him to assist for just a few weeks, but from day one it became clear that he was exceptional at what he does. He was reliable, hardworking, highly skilled, and always polite and professional. As the project progressed, I ended up keeping him on for the entire duration of the build—around seven months. During that time he worked alongside various contractors, carpenters, roofers, and other trades, consistently proving himself to be one of the most dependable people on site. He became involved in virtually all aspects of the carpentry work throughout the project and always completed tasks to a very high standard. His attention to detail, positive attitude, and willingness to help wherever needed made a huge difference to the success of the build. Thank you Atilla.
Ktl building Ltd
No reviews yet
Loft Conversion Company in Windsor
We are a trusted roofing company specializing in loft coversond installation, repairs, replacements, and maintenance. Our goal is to deliver quality workmanship, reliable service, and lasting results for every customer.
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Ictinus Contractors
Rating: 4.9 out of 5
Loft Conversion Company in Windsor
Ictinus Contractors is a reliable London-based building and renovation team, delivering high-quality workmanship across residential and selected commercial projects. We specialise in painting and decorating, wallpapering, plastering and skimming, hard flooring installation, bathroom fitting, and general property improvements. We take pride in providing clean, well-organised work with strong attention to detail from start to finish. Whether the job is a single-room refresh, a bathroom upgrade, new flooring, or wider renovation work, our focus is always the same: quality finishes, honest communication, and dependable service. Based in East London, we cover surrounding areas across London and work closely with every client to make sure each project is completed to a high standard, on time, and with care.
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Latest review:
Painting & Decorating- 6 Apr 2026
I had a very positive experience working with Konstantinos. He is personable, reliable, professional and excellent at co-operating throughout the process. He repainted my entire flat/walls/ceilings to a high standard (and sanded down) he also helped address a few additional repairs along the way. The finish is clean, fresh, and has completely transformed the space. He was thorough and ensured everything was completed properly and on time. I particularly appreciated his attention to detail and his proactive approach in taking care of things I hadn’t even noticed. I would happily recommend Konstantinos and would work with him again in the future! Thank you
PLANNING APP LTD
Rating: 5 out of 5
Loft Conversion Company in Windsor
We create architectural drawings. We are specialised in applications for planning permission and building regulations and co-operate with local structural engineers for structural calculations, party wall surveyors and building companies. Our projects include extensions, lofts, garages, house&flat conversions in different councils all around London. If you are thinking of extending, converting, or splitting your property do not hesitate to contact us for a free first consultation & quotation.
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Latest review:
CAD / Drawings- 23 Sep 2020
Marius has been doing a great job and put in an extra effort to ensure we were happy with the outcome. I can not recommend Marius highly enough, especially as he managed to fix an issue with the council that we had from someone else drawings. He was patient and very well prepared. Went an extra mile and gave us different ideas/options. He was flexible with timings and most importantly with price. Had by far the best quote and did an exceptional job.
Damas roofing ltd
No reviews yet
Loft Conversion Company in Windsor
We Specialise in all your roofing needs from basic tile replacements to new membrane installation and new guttering system. With a vast range of fascia and soffit designs, you have come to the right place.
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Ace construction
No reviews yet
Loft Conversion Company in Windsor
Quality builders for all your needs, fully qualified and professional team Available for all Work that needs undertaking
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Phi Architectural Services Ltd.
Rating: 5 out of 5
Loft Conversion Company in Windsor
Phi Architectural Services Ltd. specializes in providing architectural, structural and project management services from small to big sized residential projects. With more than 12 years of experience and more than 500 projects ranging from refurbishment to new build houses and flats, the firm also have its own team of sub-consultants and contractors.
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Latest review:
CAD / Drawings- 6 Mar 2022
Very helpful architect. Needed a little nudge occasionally due to busy season, but the work is delivered in time and to a high standard. I'm happy with the result.
MKSummer Ltd
No reviews yet
Loft Conversion Company in Windsor
We provide Design & Build services. Planning application drawings and structural calculations, project management and construction service. Our builders are all experienced in new build, extension, loft conversion and interior alterations.
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Clarke's Design & Build Limited
Rating: 5 out of 5
Loft Conversion Company in Windsor
Flawless Finishes - look right here! Clarke's Design and Build are general contractors based in London, serving both the London and surrounding areas of the United Kingdom. Clarke's Design and Build focuses on tailor made home design, residential / commercial renovations and aim to use sustainable, environmentally friendly resources. We specialise in design, extensions, interior/exterior upgrades and aspire to turn challenges into solutions, plans into useful creative spaces.
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Latest review:
Carpentry- 22 May 2024
Great work from Leslie! On time, friendly, accommodating of all my questions and paid attention to all the details. Thank you Leslie.
VGM construction ltd
No reviews yet
Loft Conversion Company in Windsor
We are different from other construction companies as we provide timely and unique services to our respected clients. We see to it that our orders reach our clients on time and allow time to negotiate a fair price We as a construction company, strive hard to stand up to the expectations of our clients, and if you choose us, we will endeavour to give you the best service as possible. If we make a mistake, we will own up and rectify the error at no cost to the customer
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Total B Construction Ltd
No reviews yet
Loft Conversion Company in Windsor
Total B Construction Ltd are leading main contractors providing end-to-end design, construction, and commercial/residential project delivery across London and the South East. Under the executive direction of NVQ Level 7 Project Management, our group operates with corporate precision, rigorous HSE compliance, and dedicated site supervision on every contract. Our Specialized Divisions: • Main Contracting & Refurbishments: Full-scale residential developments, commercial-to-residential conversions, and structural remodeling. • High-End Interior Fit-Outs: Bespoke joinery, architectural tiling, luxury wet rooms, and premium finishes executed by master trades. • Sustainable & Eco Construction: Modern Methods of Construction (MMC), Structurally Insulated Panels (SIPs), and energy-efficient building systems. Why Enterprise & Residential Clients Partner With Us: • Senior Project Oversight: Managed directly by NVQ Level 7 certified leadership to guarantee deadline compliance and budget accuracy. • Full Regulatory Compliance: Fully insured, CDM compliant, with strict quality assurance (QA) frameworks. • Scalable Workforce: Capacity to handle concurrent, multi-phase projects without compromising on execution speed or quality. Contact our commercial team today to schedule an initial consultation or tender review.
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4.3

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Windsor, are rated 4.3 out of 5 based on 6 reviews from customers like you.

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What services are offered by loft conversion companies in Windsor?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Windsor 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 Windsor 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 Windsor

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 Windsor loft conversion company.

Find a loft conversion company in Windsor 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 Windsor.

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 Windsor can view your job and register their interest.

Step 2: Review and compare Windsor 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 Windsor 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 Windsor 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 Windsor

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 Windsor?

A local loft conversion company in Windsor 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 Windsor 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 Windsor 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 Windsor

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 Windsor before agreeing to start the work.

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

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 Windsor 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 Windsor loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.