Loft Conversion Companies in Millwall

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.6 (9 reviews)

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Some of our top rated loft conversion companies in Millwall

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shalom property development ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
Shalom Property Development ltd is a small construction company based in the Croydon area. We specialize in property refurbishment, house extensions, loft conversions, garage conversions, etc. We also undertake projects like plastering, painting/decorating, electricity, plumbing, tiling, flooring(laminate, wood, bamboo), bricklaying.
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Latest review:
Plastering- 6 May 2025
Amazing guys. Hardworking, tidy, professional. They worked in our house for 3 months and we were super happy with the work and everything. We invited them to do more work later on. 100% probably the most sincere and trustworthy builders we met. Only them. No one else from now on.
Housi Ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
As Architects, developers and homeowners, we want to help other homeowners avoid the stress, confusion and money wasted on renovation works. At Housi, we help connect the dots across the various stages and different professionals required to help you get from A-Z or Design to Construction.
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Latest review:
You NEED Housi on your project, they took the stress out of our renovation!! We would highly recommend! We got in touch with Housi to help with ideas to renovate a new property I was buying. Holly from Housi helped us with architectural and industry advise throughout the process even before starting full design services which helped me understand my budget more and where items from the survey and my design ideas could overlap. As I was trying to limit costs, Housi helped develop a phased approach to the works as well as assessing options to have a self contained rental unit to bring in income to pay for the final works later. Overall, Holly helped us find minimal abortive works whilst trying to maximise value and functionality. As well as design strategy, she helped us submit a licence to alter application as we found out the house was under a covenant agreement, and managed the project through tender also - meeting with builders and getting quotes. Most importantly, she was able to advise us where builders may be overcharging so we could assess the right builders for us. Working with Housi really made a difference to our project by helping us understand the different stages of a renovation. Holly offered so much more advice and reassurance than any previous professionals we had worked with on our last house and even helped us source re-claimed steel as we wanted to be as circular as possible.
Rapid roofing Essex
Rating: 4.5 out of 5
Loft Conversion Company in Millwall
We are a family run combine business & have been trading in the construction industry for over 50 year, working throughout London and the home counties since the 1970's! Starting with my Grandfather knowledge & ability to build an extension right though to building houses! & the same with my uncle's being a professional Plasterer & Roofer that we still continue to compete effectively against companies who frequently come and go as our work force are very dependable & skilled tradesmen! #family
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Latest review:
Roofing (Pitched)- 17 Sep 2018
The job I required was to have some tiles removed and felt pulled back to get to the ceiling void and also to do this around a Velux Window. Jamie kept in touch with my regarding the job and was available for work at short notice, it was clear he knew about the roof tiles I would need. Jamie was very knowledgeable and knew how to get round the Velux window. He turned up with his team and they were very quick with the work and enthusiastic. They completed the work quickly and he even went away and got some extra tiles to replace any already broken tiles and also placed extra felt on to the roof for me. He was very friendly and I would recommend and use again for any roofing work required. He was punctual and ensured that I was happy with the work before he left and showed me what he had done. He was happy for me to pay him afterwards when I had more time.
Nice Design & Build
Rating: 5 out of 5
Loft Conversion Company in Millwall
Quality general builder
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Latest review:
Decking- 16 Apr 2022
Adam is firstly a really lovely guy and we felt comfortable with him from the moment he came and did a very thorough assessment of the job. His work was very neat and clean. The job was done perfectly and we will definitely be using his services for other work on the flat.
Kasa
Rating: 5 out of 5
Loft Conversion Company in Millwall
Kasa Building services , it’s proud to offer a wide range of services from new build to loft&extensions , refurbishments , plumbing and electric,carpentry and loads more … With as quality matters
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Latest review:
Plumbing- 3 Apr 2023
Kasa was absolutely fantastic, nothing was too much hassle as we had to make changes during the job. We have now found a plumber, we can use on all future projects. Big thank you Kasa from myself and Aiste.
Maxcontractorsint.LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
At MaxContractors , we pride ourselves in providing our customers with quality construction services that are tailored to their needs. Our team is highly experienced in the industry and have a great deal of knowledge when it comes to building and renovation. We pay attention to detail and are always willing to go the extra mile to ensure that the job is done to the highest standard. Over the past many years our company has thrived within the domestic as well as commercial building industry. With vast amounts of staff specialising in all areas of the trade, our tradesmen/women boast skill and determination many could only wish of. Having completed thousands of projects, putting smiles on countless of faces we aim to deliver the highest of standards in all aspects of the works and services. Providing quality and great time management throughout each step of this journey. We stand strong beside our clients providing a helping hand so ideas become reality, all while with a peace of mind you kick back and watch your future grow. maxcontractorsint. com
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Latest review:
We recently completed a first and second floor renovation alongside an 5x6m extension of our 1930s property with Maxcontractorsint.ltd , and we couldn’t be happier with the results. From start to finish, they have been absolutely fantastic. The attention to detail and the quality of workmanship throughout the project has been exceptional. Matt and his team are incredible, they worked efficiently, kept work on track, and made sure we were updated and involved at every stage. Their skills, ideas, and collaborative approach truly brought the whole project together. Communication throughout the project was good, and the team provided great pre and post project support. Matt was very detail-oriented, offered inspiration during site visits, and was supportive of our requests along the way. We’re so happy with the end result and would absolutely recommend Maxcontractorsint.ltd for any project.
Check Carpentry
Rating: 5 out of 5
Loft Conversion Company in Millwall
I’m a carpenter with 7 years site and workshop experience. I have a NVQ diploma in site carpentry, a CSCS skilled card and full insurance. Fully competent with -1st & 2nd fix carpentry -Cutting roofs and setting out truss roofs -Flat roofs and EPDM rubber installation -Garden outbuildings, decking, carports, beach huts etc -Fascia soffit gutter -Kitchen fitting and furniture fitting
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Latest review:
Decking- 8 Sep 2024
Chester did an excellent job and I would recommend him as he is very conscientious gets the job done to a high standard.
Singh Lofts Ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
Singh Lofts, building and maintenance have over 52 year’s managerial experience in the construction industry. We are known for our ability to deliver high-quality projects on time and budget. Regardless of a project’s size or complexity, we meet our client’s needs.
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Latest review:
Extensions- 8 Sep 2016
We hired Stone cbm to build our rear extension in Feb 2016 and the job finished on time in April. If there were a best builder award, the winner would be Jas. He is not your typical builder; his communication and execution skills are second to none. He listened to all our requirements like a friend and provide solutions like a pro. We are pleased with the finish. The project is just about on budget and on time, and could have been finished earlier if not for the other tradsman we called in to do other work causing delays. We had all sorts of problems with all the other tradesman and Jas was always there to give us a helping hand. In hindsight, we should have hired jas to do our other work as well as the extension to reduce all the stress. Project managing is much tougher then we thought especially when most of the tradesman out there simply do not care about their reputation at all (even the ones with many good reviews on mybuilder). Jas on the other hand is extremely organized and highly reliable. We would recommend Jas and his team wholeheartedly to anyone and looking forward to working with him again for our next project.
CJ Carpentry
Rating: 5 out of 5
Loft Conversion Company in Millwall
We are joiners by trade, passionate on what we do over the years. We have combined over 32 years of experience on carpentry/joinery itself. As there is always demand, we started delivering any type of construction work, full house refurbishment, kitchens, bathrooms etc. Always preserving our high quality of work, honesty, professionalism. Fully committed to anything we can come across, always find clients, architects solutions so we can achieve everyone’s dream, expectations.
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Latest review:
Carpentry- 18 May 2022
Very professional and friendly tradesman. Work was carried out perfectly and I couldn't recommend him high enough. Brilliant work ethic and he went the extra mile to carry out the works impeccably. Privellage to work with him.
Idealbuilder
Rating: 5 out of 5
Loft Conversion Company in Millwall
Ideal builders - We Build Your Dream Home Home Building & Remodeling Experts. Contact Us Today For A Free Estimate. Friendly 🤝 Hard working 👌 Trusted 🙏 Quality ✔ Professional ✔ Communication ✔
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Latest review:
Hard Flooring- 21 Apr 2024
Very positive experience and would recommend to others and use again for any future work. Old flooring removed and relayed within a really quick timeframe and to a high standard. Thank you!!
Shaped Builders LLP
Rating: 4.6 out of 5
Loft Conversion Company in Millwall
Shapedbuilder is a locally based London custom residential building company with over 14 years of experience which offers a wide array of building and renovation services, for any job, big or small.
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Latest review:
Bathroom Fitting- 17 Nov 2019
Diagnosed the problem and completed the job. Efficient, clean and professional
Jason
Rating: 5 out of 5
Loft Conversion Company in Millwall
We do offer services on loft conversion, wood frames, fascias&soffit, guttering, cladding and all sort of roofs(including peachroof, flatroof etc.). Additionally we specialise in roofs, extensions, renovation and new builds. We cooperate with wide range of other specialists such as architects and engineers. Koka Carpentry&Roofing We don’t offer cheap prices but we do offer the best ones ☝️
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Latest review:
Jason and his team , completed a rear extension roof on south Croydon for me Previously had completed other projects on other properties for me Highly recommend Great person and great workmanship
Safe home improvement
No reviews yet
Loft Conversion Company in Millwall
Safe Home Improvement is a trusted general builder serving Tower Hamlets and surrounding areas. We specialise in home renovations, extensions, kitchens, bathrooms, and all aspects of property improvement. With a focus on safety, quality, and customer satisfaction, we deliver reliable, high-standard results for every project.
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RJS Innovative Building Ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
RJS Innovative Building looks for new designs and technologies available to give our clients the best solutions. We are happy to look at any project. We provide extensive knowledge on interior/exterior refurbishment, extensions/loft conversions, bathroom redesigns/installations, kitchen redesign/installations and revitalising property period features. We have connections with kitchen, tile, natural stone manufacturers FOLLOW AND SEE OUR WORK ON INSTAGRAM. @rjsinnovativebuilding
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Latest review:
Restoration & Refurbishment- 9 Sep 2021
The original job for a bathroom renovation turned into a much bigger job. Raphael and his team ended up helping design and renovate the bathroom, bedroom, living room and hallway. The team helped us source all the materials including underfloor heating and an incredibly intricate mosaic tiled floor in the hallway. They provided practical advise about what was best for the space, what would work within our budget and what would be easy to live with. For example, the team installed underfloor heating in the living room using wood effect herringbone ceramic tiles which would help get the maximum efficiency out of the underfloor heating whilst giving us the wooden flooring look we desired. Raphael and the team were excellent throughout delivering high quality work and we were more than happy with the final results. I would highly recommend Raph and his team.
A2Z Property Improvement Ltd
Rating: 4.9 out of 5
Loft Conversion Company in Millwall
A well establish Building Contractor with 24years experience, Dealing with all kind of Home Extensions, Loft Conversions, basement conversion, out buildings, electrical wiring, plumbing & boiler fitting, tiling, kitchen and bathroom fitting, roofing, K rendering, property refurbishment and decorating
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Latest review:
Loft Conversion- 24 Apr 2025
We are absolutely thrilled with the outstanding loft conversion completed by [Yasin Miah] and their team. From the initial consultation to the final finishing touches, their professionalism, craftmanship, and attention to detail have been second to none. I will definitely recommend them for any type of building work.
O G Electrical
Rating: 5 out of 5
Loft Conversion Company in Millwall
O G electrical is based in Belvedere and Part P registered with Napit and the Electric safety register. All electrical work undertaken, with 25 years knowledge and experience. Re wires , fuseboards , under floor heating , Cctv , lighting , fire alarms , garden and drive lights,commercial fit outs, 3 phase, extract fans all Electrical installs carried out. Installations to new build houses/apartments throughout London and Kent Inspection and testing Eicrs All work guaranteed.
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Latest review:
Electrical- 1 Dec 2020
Olly was cheerful even though confronted with an ancient wiring system and a difficult problem. He came back for a second day and sorted it. There was a callback which he sorted quickly and without complaint

4.6

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Millwall, are rated 4.6 out of 5 based on 9 reviews from customers like you.

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What services are offered by loft conversion companies in Millwall?

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

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 Millwall loft conversion company.

Find a loft conversion company in Millwall 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 Millwall.

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 Millwall can view your job and register their interest.

Step 2: Review and compare Millwall 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 Millwall 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 Millwall 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 Millwall

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 Millwall?

A local loft conversion company in Millwall 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 Millwall 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 Millwall 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 Millwall

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 Millwall before agreeing to start the work.

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

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