Loft conversion companies in Mitcham

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.2 (10 reviews)

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Some of our top rated loft conversion companies in Mitcham

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Crest development group ltd
Rating: 4.8 out of 5
Loft Conversion Company in Mitcham
Team of multi trade professionals specialising in plumbing, bathrooms, kitchen roofing extension, and loft conversions
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Latest review:
Plumbing- 20 Oct 2026
Crest Development arrived on time and completed the job as per the original estimate. We are more than happy with the job completed. We’ve just asked them to quote for further work on our home. We hope to employ them again in the future. Thank you Crest Development for your prompt arrival and for completing the job in a timely fashion.
W&P Building Services LTD
Rating: 5 out of 5
Loft Conversion Company in Mitcham
Here at W&P Building Services we pride ourselves with providing excellent service, expertise and pay close attention to details. We to offer all aspects of carpentry and joinery. As a company we confidently aim to offer our professionalism and ability to meet the demands and expectations of our customers. Please feel free to get in touch for a free consultation and quote.
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Latest review:
Joinery & Cabinet Making- 22 Jan 2025
Absolutely incredible work. We've used W&P several times over the last 18 months and each time we've had something different and unique, delivered to perfection as we wanted. They are extremely versatile in their work, best we've worked with and couldn't recommend enough
WILTON BUILDING SERVICES ENGINEERING
Rating: 5 out of 5
Loft Conversion Company in Mitcham
We serve all construction infrastructure; building, electrics, plumbing, carpentry, and more. Our services span from initial planning, through start-up and operations. We have helped customers to complete their projects, and improving their life. Characterized by the quality of our work and our persistent drive to deliver the most successful outcomes, we align our capabilities to our customers’ objectives to create a lasting positive impact.
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Latest review:
We had an excellent experience with Wilton. They made the process straight forward and quite painless from start to finish. Everything proceeded efficiently and we are thrilled with the final results. Two beautiful new bathrooms, finished on time. A great experience from start to finish.
Guildkey Builder
Rating: 4.9 out of 5
Loft Conversion Company in Mitcham
Guildkey Builders is a professional construction company specialising in loft conversions, home extensions, structural alterations and complete property renovations across South London and the surrounding areas. We also undertake kitchen and bathroom installations, property conversions and general building work. From the initial quotation through to completion, we focus on quality workmanship, clear communication and careful project management. Whether you want to create more living space, modernise your property or carry out a complete refurbishment, our team is committed to delivering a safe, practical and high-quality result.
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Latest review:
Loft Conversion- 18 Jul 2026
Reliable and communicative. Work completed to a high standard. Very happy.
Calum Kennedy
Rating: 5 out of 5
Loft Conversion Company in Mitcham
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
SIXTHART LTD
Rating: 5 out of 5
Loft Conversion Company in Mitcham
We are an Architectural and Interior Design Studio. We effective planning and technical drawing services. Our Services - Site Survey -All Drawings with Cad Software (Demolish/Proposed) - Draft Planning - Pre Advice Planning - New Build Design - Loft Conversion - Home Extensions - 3D Visulation -Kitchen &Bathroom design projects - Preparation and submission of planning applications - Hourly\Daily Based CAD Services - 3D Modelling (Internal & External Visualisation) -Member of TAG (Traditional Architecture Group) -Bachelor’s Architectural Design Practice -NAAB -TMMOB
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Latest review:
Extensions- 16 Sep 2024
Erhan was excellent. He followed my project from start to finish and kept me updated throughout. Here to the next project!
BESPOKE BUILD (SURREY) LTD
Rating: 5 out of 5
Loft Conversion Company in Mitcham
As a construction company with years of experience covering many aspects of commercial and domestic builds, Bespoke Build will cover all projects from extensions, refurbishments, loft conversions and brickwork, right through to outbuildings and outdoor kitchen spaces. Dedicated to meeting every clients unique requirements we strive to deliver all our projects on time, on budget, and to the highest standards
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Latest review:
Roofing (Flat)- 23 Oct 2019
Excellent service. Friendly, clean and tidy. Declan explained what he was going to do with the work and then efficiently got on with it. Good value.
Force Design London Ltd
Rating: 5 out of 5
Loft Conversion Company in Mitcham
Force Design London – Expert Construction and Renovation Services With 15 years of experience in the construction industry, we have successfully completed numerous projects, including Loft Extensions and Side Extensions. Together with our highly skilled team, we not only specialize in structural extensions but also provide a wide range of renovation, decoration, flooring, kitchen and bathroom remodeling, and general construction services. We adhere to high-quality standards in all our projects and ensure that all necessary certifications are provided, guaranteeing safe and legally compliant work. Our projects seamlessly blend aesthetics and functionality, creating unique and tailor-made designs for our clients. By carefully analyzing our clients’ needs, we offer budget-friendly and timely solutions. Our commitment to using high-quality materials, meticulous attention to detail, and customer satisfaction has established us as a trusted name in the industry. We can provide a portfolio showcasing some of our completed projects. Get in touch with us
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Latest review:
Carpentry- 17 Feb 2025
Ahmet did an excellent job. Very responsive and came out first to check the job. Will definitely be calling Ahmet back for other jobs.
Vilmos Huszak
Rating: 4.4 out of 5
Loft Conversion Company in Mitcham
Everol ltd has been running successfully since 2002. A team of 15 highly experienced team including; roofer, decorators, plumber, electrician, tiler, brick layers and plasterers bringing you the quality space in your home. We specialise in loft conversions, extensions and refurbishment projects. Have plenty of excellent references to privide on request.
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Latest review:
Restoration & Refurbishment- 18 Nov 2017
We were initially very impressed with Vilmos's work and communications with him. However, he has not completed the work and has been uncontactable since end Aug 2017. Vilmos identified and fixed a lot of errors made by a previous builder such as leaks in the bathrooms. He carried out works as requested by building control and as far as we can see these works were completed. We were especially happy with our communications with him as we were based overseas. The final step is for Vilmos to meet with the building control and get the building works signed off. However, Vilmos has suddenly become uncontactable via phone and email and has not contacted building control to carry out the final step.
Swift Building Masters
Rating: 4.9 out of 5
Loft Conversion Company in Mitcham
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
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Latest review:
Kitchen Fitting- 28 Jan 2019
In short, Les provided a super-efficient and spot-on service. We found him to be straightforward and his rates were very good. We will, no doubt, use Les for some larger projects which we will have scheduled for later this year.
AAA Roofing
Rating: 5 out of 5
Loft Conversion Company in Mitcham
We have 30 years experience with an exceptional reputation most of our work is through recommendation. We cover every aspect of your roofing needs no matter how big or small from a single tile repair to an entire re-roof,100% customer satisfaction guaranteed.
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Latest review:
Roofing (Flat)- 15 May 2014
Billy and Matthew were fantastic. Quick, on time, did an excellent job, and left everything clean and tidy. Their price was right, and they were nice guys to have around.
M.R.Building
Rating: 4.1 out of 5
Loft Conversion Company in Mitcham
We are team of professional builders from Croydon, Surrey. We always work hard and unless client are pleased. Our knowledge and planning giving you real savings without compromise on quality. Projects are always done to top quality and on time..
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Latest review:
Extensions- 15 Nov 2017
NEVER USE Got on well at the start - worked very hard with all his team and we were very please with progress until he went on holiday and haven't been able to contact him since beginning of August. We have been left with no end of problems including basicially re-wiring all of what we had paid for, 2 fireplaces not working, patio and drive not finished and all paid for
Crown plastering & building
Rating: 5 out of 5
Loft Conversion Company in Mitcham
A family business run by father and son with over 30 years experience combined. Being a family business our work is our reputation and therefore all works carried out are to maximum potential! Clean, realiable and great pride is taken leaving customers happy and without hesitation for recommendations. Specialising in plastering, rendering, traditional Italian Venetian polished plaster and all aspects of building works also undertaken.
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Latest review:
Bathroom Fitting- 20 Sep 2017
We hired Luca for a job that involved a variety of work across our entire flat. Being totally new to renovation work and having been stung by other builders, meeting Luca was a breath of fresh air – he was friendly, helpful and honest. Luca did an great job for a very reasonable price. He’s fairly new to contracting bigger jobs, but he’s got a lot of previous experience as a tradesman and his plastering in particular was perfect – we’ve had loads of compliments on the quality of his walls and ceilings. He was always on time, always communicated with us fully, and was a pleasure to have around the flat. He made a real effort to keep disruption as minimal as possible and was very patient with us about stuff needing to be moved from one place to another. It wasn’t the easiest job and there were a couple of problems and extras, but Luca takes a lot of pride in his trade and worked extremely hard to keep us happy. We had a couple of plumbing issues arise but he went well above and beyond to resolve them, coming back for 2 days after the job was due to be finished to make sure that everything was working properly. This is far more than we expected, and we did really trust that Luca wasn’t the sort of person that would leave anything unfinished. We’re so chuffed that we met Luca and with the excellent work he did, and would love to work with him again. Luca is going to go on to big things, so if you get the chance to hire him now, we'd recommend him without hesitation.
Kingston Surrey Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Mitcham
We are a construction company with over 25 years experience. We Have worked on major projects including extensions, loft conversion and refurbishments. Including smaller projects, new bathroom and kitchens.
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Latest review:
Restoration & Refurbishment- 21 Apr 2024
Got my cloakroom re-done. They r friendly, professional, attention to detail, with clearly tens of years’ experiences. Reasonable rate as well.
George E Construction
Rating: 5 out of 5
Loft Conversion Company in Mitcham
Hi , I have been doing so many renovations ,extensions and conversions. I am a professional carpenter/furniture maker by trade too. I have carried out and delivered so many beautiful homes to my clients over last 30 years. I am very confident and reliable on my work and schedule and very happy to discuss your upcoming projects.
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Latest review:
George has worked on 2 projects with me so far. He's my go too builder and I'd recommend him above anyone else. The project we worked on together included a loft and extension on one project and another loft and extension on another. Both projects were stripped right back and the finished product was brilliant. George is on-site every day and runs the job in a professional manor. Works well with neighbours and keeps the area clean as well. His workmanship is great but his carpentry skills are on another level. He'll make wardrobes fit stairs etc. the finishing on his projects are sensational. A must hire!
LMG Building Services Ltd
Rating: 5 out of 5
Loft Conversion Company in Mitcham
We are a family run business offering you a personal touch. Work is always completed to a high standard. We are members of the Federation of Master Builders & Our previous customers will be happy to confirm the level of Service, Quality & attention to detail that we provide as standard.
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Latest review:
Conversions - General- 3 Dec 2021
Would 100% recommend Lee. His professionalism and attention to detail was fantastic. Always available for questions outside of working hours (rare for a builder) and an overall nice guy. I'm definitely keeping his number for any future work I do.

4.2

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Mitcham, are rated 4.2 out of 5 based on 10 reviews from customers like you.

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What services are offered by loft conversion companies in Mitcham?

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

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 Mitcham loft conversion company.

Find a loft conversion company in Mitcham 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 Mitcham.

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 Mitcham can view your job and register their interest.

Step 2: Review and compare Mitcham 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 Mitcham 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 Mitcham 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 Mitcham

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 Mitcham?

A local loft conversion company in Mitcham 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 Mitcham 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 Mitcham 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 Mitcham

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 Mitcham before agreeing to start the work.

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

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