Loft Conversion Companies in Thamesmead

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 5 (7 reviews)

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Some of our top rated loft conversion companies in Thamesmead

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Roof Restorer Ltd
Rating: 5 out of 5
Loft Conversion Company in Thamesmead
Hi, and welcome! We’re Roof Restorer — a dedicated roofing company based in London, specialising in all aspects of roofing including new roof installations, flat roofs, roof repairs, tile replacement, leadwork, and more. With a skilled and reliable team, we pride ourselves on high-quality workmanship, transparent pricing, and exceptional customer service. Whether it’s a small repair or a full roof replacement, we treat every job with care and professionalism. We’re fully insured and offer guarantees for peace of mind. Get in touch for honest advice and a no-obligation quote — we’re here to help protect your home.
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Latest review:
Roofing (Pitched)- 18 Jun 2025
I was in need of a quick roof inspection to make sure that the works carried out by another roofer were to a good standard. Shilhaad was very prompt to get back to me and had outstanding communication from quotation through to delivery. He was fair and impartial, turning around a report on the same day. He was very friendly, approachable and knowledgeable. Thanks to Shilhaad, I can go back to our initial roofers with some evidence on work that needs to be redone. My only regret was not using Shilhaad and his team to carry out the roof works in the first instance. Thanks again!
NESIMI CONSTRUCTION LTD
Rating: 5 out of 5
Loft Conversion Company in Thamesmead
Nesimi construction ltd With over 18 years of experience, we specialise in bricklaying, driveways, and paving. We carry out all types of work including garden walls, patios, extensions, repairs, and general building. We pride ourselves on high-quality workmanship, reliability, and attention to detail. All jobs are completed to a high standard, on time, and at competitive prices. Friendly, honest, and professional service from start to finish.
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Latest review:
When Mr Nesimi came to undertake a pre-assessment for my front wall, he came across very professional and genuine and very honest about the work needed doing. He even suggested some changes to the work to reduce cost. The quote he gave me for the job was very reasonable and he was able to slot in my job within a week and arrive sharp on time at 8am and got on to the job straight away as I had a busy day at work for me to attend to. I notice that right from the start he was very clean and meticulous with the work and his job was of a very high quality ( compared to a job I had done by another builder 9 months ago). My neighbours also noticed this difference and were praising Mr Nesimi’s work. I would definitely recommend Mr Nesimi for any construction work as I felt he was very professional, reliable and honest and most of all the work was of high quality. I will be certainly calling him for my next job, most likely the driveway resurfacing and the attic conversion within the next year.
Carpentry
New on MyBuilder
Loft Conversion Company in Thamesmead
I am a carpenter with 15 year's experience. Can do any carpentry work( staircases doors,flooring ,roofs etc
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MILSTRUCT Limited
No reviews yet
Loft Conversion Company in Thamesmead
At MILSTRUCT Limited, building is more than just our business — it's our family tradition. With over 40 years of combined experience in the construction industry, we deliver high-quality workmanship across both domestic and commercial projects. As trusted, approved contractors for major pub chains and contractors for private clients, we have successfully completed large-scale projects including full refurbishments, extensions, and structural works. Our reputation is built on providing a seamless, professional service while maintaining the personal, hands-on approach that only a family-run business can offer. We are committed to working closely with our clients to bring their vision to life — delivering projects on time, on budget, and to the highest standards. Quality, reliability, and integrity are the foundations we build on every day. When you choose MILSTRUCT, you're choosing a team that values your project as much as you do.
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Knowhow decorating services ltd
Rating: 5 out of 5
Loft Conversion Company in Thamesmead
This is a family run company and our main objective has been to provide the highest quality on the market. I have over 20 years experience in private properties and commercial properties. I take on full property renovations so this is not the only trade I cover, however this is the trade that I first started in 25 years ago
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Latest review:
Samouil and his team at KnowHow Decorating completed a major project restoring our house. Work scope included sorting the tired and broken windows , guttering , fascia panels. Replacing rotten window ledges was done with superbly crafted new hard wood. No task was too difficult as the house was looking shabby. Full painting inside and outside was really well done. We feel like we have a "new" house and Samouil and team are a pleasure to deal with. They go beyond to satisfy you . I do not hesitate to recommend them strongly and will use again anytime .
INM Construction Ltd
No reviews yet
Loft Conversion Company in Thamesmead
We are based in Stoke Newington and have recently joined Mybuilder to expand our work and fill in gaps. Our company conducts construction work on small and medium scale projects. Whilst we specialise in loft conversions and extension buildings, we have over 20 years of experience in general construction work, carpentry and roofing, having completed over 500 projects.
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ACAR BROTHERS LIMITED
No reviews yet
Loft Conversion Company in Thamesmead
It is a design and construction company that operates in London by an Architecture Graduate Huseyin Acar, completing BSc Architecture (2012) and Master of Architecture(2014) at the University of Bath.
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M.R.Building
Rating: 4.1 out of 5
Loft Conversion Company in Thamesmead
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
HJC Cornhill Construction Ltd
No reviews yet
Loft Conversion Company in Thamesmead
We are home improvement business with the focus on loft conversions and small extensions. We carry out multi skilled works at various domestic and commercial properties. We also carry out a full range of repairs, maintenance and refurbishment work.
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Ferencz
No reviews yet
Loft Conversion Company in Thamesmead
8 years experienced in dryliner
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DRT Design Services
No reviews yet
Loft Conversion Company in Thamesmead
Hello, I'm Dan. I'm a qualified Architectural Designer with more than 10 years experience working within the design and construction industry. I mainly specialise in domestic home refurbishments, extensions and renovations. I believe that architectural services should be accessible to the ordinary homeowner and not just the wealthy elite. Therefore this I what I value as an ethos and practice as a professional. I love working closely with homeowners helping them achieve the home that they love. I offer a transparent honest, and straighforward service. Whether it's just a simple space planning design you need, to delivering the construction of your extension, I'm here to help.
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Andfix44
No reviews yet
Loft Conversion Company in Thamesmead
Welcome to Andfix44 18 years of experience in Building and maintenence industry 🟢 Dry lining 🟢 Carpentry 🟢 Kitchen fitting 🟢 Maintenance 🟢 Other
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DJS Construction Ltd
No reviews yet
Loft Conversion Company in Thamesmead
I specialise in the house refurbishment and house extension. 25 years experience in the home improvement industry.The list below is intended to give a indication of the type of work I do:house refurbishment,loft conversion,house extension,bathroom,wet room,kitchen,custom made furniture
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Essex and City
No reviews yet
Loft Conversion Company in Thamesmead
We are a professional building company that specialises in multiple areas of building solutions. We have a range of skilled, clean and reliable tradesmen who are widely knowledgeable in their trade who will get the job done with maximum communication with our clients, with the best possible results. To see some of our work visit our Instagram page and DM for enquiries: Instagram: EssexandCity
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Reforma Construction Ltd
No reviews yet
Loft Conversion Company in Thamesmead
Residential building contractors with more than 15 years experience of new builds, extensions, loft conversions and property refurbishment.
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M London Construction Ltd
No reviews yet
Loft Conversion Company in Thamesmead
We are a renovation and refurbishment company delivering high quality building work across extensions, loft conversions and full home refurbishments. We work closely with homeowners to plan and deliver well-structured projects – from structural alterations and space reconfiguration to high quality finishes. Whether it’s extending a home, converting a loft or refurbishing an existing space, our focus is on building properly, not cutting corners. Our approach is hands-on and detail-driven, with clear communication at every stage. Clients value our honest advice, realistic pricing and the confidence that their project is being managed carefully from start to finish. We believe successful building projects are defined not just by how they look when finished, but by how well they are planned, coordinated and executed.
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Top rated Loft Conversion Companies

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

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What services are offered by loft conversion companies in Thamesmead?

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

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 Thamesmead loft conversion company.

Find a loft conversion company in Thamesmead 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 Thamesmead.

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 Thamesmead can view your job and register their interest.

Step 2: Review and compare Thamesmead 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 Thamesmead 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 Thamesmead 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 Thamesmead

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 Thamesmead?

A local loft conversion company in Thamesmead 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 Thamesmead 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 Thamesmead 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 Thamesmead

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 Thamesmead before agreeing to start the work.

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

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