Loft Conversion Companies in Waterloo

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.5 (13 reviews)

Easily find verified Waterloo Loft Conversion Companies. Just post your job to get quotes from MyBuilder's Loft Conversion Companies in Waterloo.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated loft conversion companies in Waterloo

1799 Results

Sort by:

H&J Properties 02 Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
H&J Properties is your friendly, reliable small team with over 10 years of experience in the building industry. We design, plan, build, and project manage, so you can rely on us for a full round of service. From floor and wall tiling to full kitchen and bathroom installations, we’ve got your home covered. We handle plastering, painting, drylining, insulation, and more with precision and pride. Need a loft, rear or basement extension, a new roof, or concrete work? No problem. Whether it’s bricklaying, basement waterproofing, or installing windows and doors, we bring craftsmanship and care to every job. Big or small, we build it right. Please message us directly for more project images.
Get in touch
Latest review:
We have contracted H&J Properties for our house refurbishment in London. I was impressed with the team's professionalism and project management from start to finish. We had no plans or planning approved, so we wanted a design and build company who will be able to look after the project from start to finish. They did just that. Working with the architects and the planning application before starting the project planning. As always, there are, of course, unforeseen issues arising with the old houses in london but I could't be happier with the communication received from the team. Thanks for the great job.
FM Building
Rating: 4.8 out of 5
Loft Conversion Company in Waterloo
Honest and friendly company, we here at FM Building focus on complete customer satisfaction and make a promise to our clients to offer best quality services at competitive rates. All projects considered and dealt with in a professional manner regardless of the size or duration.
Get in touch
Latest review:
Handyman- 12 Oct 2018
The flat was left in a very bad state after the tenants left. Marius was able to undertake all the jobs, from changing carpets, redecorate, repairs and clean up. Also gave good advice as I was not able to attend the site in person so Marius kept me updated with photos. The price was also good. Thank you. Will use these guys again.
Towergate Design
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Towergate Design Studio is a London-based leading practice working in the residential and commercial sector. We have a reliable and excellent painting team with reputation for high-quality work, attention to detail, professionalism, including punctuality, clean communication and using quality materials. We are the A turnkey company provides a service from design to the final, fully functional and innovative building projects . We handle all aspects of a project, including design, engineering, procurement, construction, and installation.
Get in touch
Latest review:
Painting & Decorating- 8 Jan 2026
Great job done - Bulent was quick to communicate and efficient in getting everything finished. He was careful to ensure a high standard of finish and I am very happy with the result. He even did extra bits like sealing our bathtub on top of the painting requested.
London & Kent Best Kitchen & Bathroom Solutions Ltd.
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Our highly skilled team of builders, carpenters, electricians, decorators and plumbers are reliable, trustworthy and dedicated to achieving the highest quality finish for your project; however large or small. Each project is tailored to your requirements and managed via a single point of contact.
Get in touch
Latest review:
Bathroom Fitting- 26 Nov 2020
Sylwester and team did a fantastic job and were incredibly accommodating and polite with all of our requests. Would definitely recommend.
S.k Building & Decorating Services
Rating: 5 out of 5
Loft Conversion Company in Waterloo
S.K Building & Decorating Services Ltd is a London-based building company specialising in a diverse range of construction services. With a focus on delivering high-quality results, the company excels in Extension building, Property refurbishment, Bathroom installation and Kitchen installation. Renowned for their expertise and commitment to customer satisfaction, S.K Building & Decorating Services Ltd has established itself as a reliable choice for clients seeking professional construction solutions in the London area. Whether it’s expanding living spaces through extensions, revitalising properties with refurbishment, or creating functional and stylish kitchens and bathrooms, S.K Building & Decorating Services Ltd stands out as a reliable partner in the construction and renovation industry. Get in contact now for a free no obligation quote!
Get in touch
Latest review:
Restoration & Refurbishment- 7 Apr 2025
Senad and his team did a great job. They completed the project quickly and left the flat and common parts clean and tidy. Really happy with their work and would recommend. Hope to use them again.
Swift Building Masters
Rating: 4.9 out of 5
Loft Conversion Company in Waterloo
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
Get in touch
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.
PLANNING APP LTD
Rating: 5 out of 5
Loft Conversion Company in Waterloo
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.
Get in touch
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.
Yida Design and Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Yida Construction is a limited company based in Central London. We are a very reliable and professional team of tradesmen with over 10 years of experience in the building industry, committed to delivering the highest levels of quality and service to our clients.
Get in touch
Latest review:
Restoration & Refurbishment- 26 Jun 2022
Tommy was a wonderful perfectionist and has done beautiful work in our stairway and hallway which had needed refurbishment for a very long time. It feels brand new. The flooring is perfect both in the hall and staircase, and the walls are now perfectly smooth and painted immaculately. Friendly and accommodating, we will be hiring again for more jobs in the future, undoubtedly. Thank you.
Signature 1 Construction Ltd
Rating: 4.5 out of 5
Loft Conversion Company in Waterloo
Signature 1 Construction LTD is a family run business with over 25 years experience in the building industry. We specialise in extensions, loft conversions and full house refurbs. Every job we undertake we take great care of the clients house and are experienced project managers will look after you from start to finish.
Get in touch
Latest review:
Extensions- 30 Sep 2025
Overall, I’m very pleased with the work Marin has carried out for us and I’m currently in the process of instructing him to do more work. Marin built a high spec cedar shed for us with electrics and plumbing, some brickwork and laid composite decking. Marin came across, honest and reliable, which in itself is rare. He was on site most mornings to make sure his tradesmen were on the right tracks. Like with a lot of these things there were some issues along the way and I was highly impressed by Marin’s ‘no quibble’ approach to rectify any problems. I myself have a high attention to detail and am quite indecisive (nightmare client) and Marin was happy to work with me with changes to the project without incurring extra costs.
REVOSPACE CONSULTING LTD
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Revospace – Building Better Spaces Revospace delivers high-quality refurbishments and property improvements across London and surrounding areas. With years of hands-on experience in residential projects, we understand how to combine strong workmanship with structured project management to deliver results on time and within budget. We have worked on full refurbishments, kitchens, bathrooms, flooring, carpentry, decorating and general building works. Our background in site management means we don’t just complete jobs — we plan, coordinate and manage them properly from start to finish. Based in London, we operate across Greater London and Essex, and are happy to travel for the right project. Our strengths include attention to detail, reliable scheduling, transparent pricing and clear communication throughout every stage of the job. We respect your home, keep sites clean and ensure work is completed to a high standard. At Revospace, we believe in doing things once and doing them properly — no shortcuts, no hidden surprises. Quality work. Clear communication. Professional delivery.
Get in touch
Latest review:
I recently had a full kitchen installation carried out and I’m really pleased with the results. From start to finish, the work was completed to a high standard and everything was done with great attention to detail. The installer was professional, punctual, and easy to communicate with throughout the project. Any issues or questions I had were dealt with quickly and clearly, which gave me confidence that the job was in good hands. The workmanship is excellent – everything is level, neatly finished, and exactly as discussed. They also kept the workspace tidy each day and made sure everything was cleaned up properly once the job was complete. The kitchen looks fantastic and has completely transformed the space. I would happily recommend them to anyone looking for a reliable and skilled kitchen installer, and I would definitely use them again for future work.
S & S Builders
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Hi my name is Stephen and I have 30 years building experience specialising in extensions and loft conversions I do 1 job at a time and I am on site every day. I have extensive knowledge of structural engineering I also carry building insurance .and i am a member of the National federation of builders.
Get in touch
Latest review:
Loft Conversion- 9 Sep 2018
My brother and I met with many builders when looking to complete our project, a full renovation of our house and loft conversion. When we met with Stephen it was clear from the start that he has huge experience in the industry and we both felt an instance confidence in him, Stephen is a quiet man that lets the quality of his work do the talking. Stephen and his team carried out a complete renovation of the property including stripping out, structural steel installation, new roof, fitting of windows & doors, plastering, decorating, electrical rewiring, plumbing & heating, all carried out with no fuss and to a very high standard. We needed a builder that we could trust with our project as we both work full time and could not be on site every day to supervise the work. Stephen took charge of the project and his communication was excellent, always making a phone call to check any queries and to let us know how things were progressing. He was also happy to suggest changes and improvements to our plans with great vision for what would improve the end result. Minor mistakes were made during the project, but Stephen was always honest and takes a real pride in the work that carries his name, so things were always put right and with minimum fuss. Overall we feel very lucky to have found such an honest, hard working and reliable builder, we would not hesitate to recommend Stephen and if we ever carry out another project, he will always be the first man we would go to for a quote.
Close Fibres
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Carpenter skilled in all aspects of first and second fix. Experience ranging from typical terraced housing renovation, extension and loft conversions to large heritage projects.
Get in touch
Latest review:
Two things about George. Firstly his quality of work is excellent including good attention to detail and care with tidying/cleaning at the end of each day. Secondly, he communicates well both before and during the job - for example mid-way through this project there was a choice of how to do something, and he asked me rather than making a unilateral decision. I was very pleased with his work and would use him again.
Dagat Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
DAGAT LTD is an established family-owned property development and refurbishment company who have been successfully trading in the South East of England. Whether we are constructing a new bespoke property, beautifully re-developing a home, or carrying out extensions of all shapes and sizes, each project always receives the same thoughtful and meticulous attention to detail. We are additionally able to provide an extensive range of commercially orientated projects having worked for a wide range of industry sectors. We strive to create a mutually beneficial close working relationship with our clients and / or their management team. We can either complete a project from the initial planning stage or work from an architect’s plans. Our pride in working all the way through to a beautiful finish has been a major contributory factor in our success.
Get in touch
Latest review:
Conversions - General- 3 Sep 2025
Big refurb of 1650 sq ft flat, plus building 2 additional ensuites. Initial quote seemed reasonable but then once in, costs started to rise exponentially. Some work was done well, like the building component and flooring, but finishing was poor. Painting, particularly of internal doors, was done poorly, without removal of fittings first, so lots of overpainting and insufficient prep and coats. Regrouting and redecoration of front and rear patios was done poorly, with weeds already poking through. There was damage to existing bathtubs and WCs by not protecting surfaces and pouring waste materials down the pan. Everything was an argument with constant demands for more money e.g. front door only painted one side as the other side not included under "paint door". Lots of "snagging" - I only have manual on/off control of heating and hot water as "smart" thermostat won't connect, there are odd water pressures through some fixings...and now there's a leak under one of the WCs...
Master Builders Developments Ltd
Rating: 4.6 out of 5
Loft Conversion Company in Waterloo
Newly Joined My Builder, We are a established Building firm specialising in Extensions, Loft Conversions and Refurbishments, we undertake commercial projects along with substantial size constructions. Our team over all elements of construction.
Get in touch
Latest review:
Roofing (Pitched)- 26 Sep 2024
Keep this company as first choice for ur building work.
Ion Soceanu Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
My company offering high quality all-in-one building and home renovation services to customers. Our Services Include : Restoration & Refurbishment Carpentry Painting Decorating Flooring Electrical Plumbing Plastering Tiling Roofing Extensions Loft conversion.
Get in touch
Latest review:
Joinery & Cabinet Making- 24 May 2025
The work done exceeded our expectations...we decided to build more bespoke carpentry with Mini and team which we did not originally planned for
Green lofts ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Hello, We provide a professional service, excellent client relations, very organised from plans to finish. You will not be disappointed.
Get in touch
Latest review:
We are very pleased with the service we received from Green Lofts. They carried out a loft conversion with dormer at our house in Harrow. The quality of work is excellent and the finished conversion looks fantastic. Green Lofts are a very easy company to deal with and they were always professional and helpful. We wholeheartedly recommend them.

4.5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Waterloo, are rated 4.5 out of 5 based on 13 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What services are offered by loft conversion companies in Waterloo?

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

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 Waterloo loft conversion company.

Find a loft conversion company in Waterloo 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 Waterloo.

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 Waterloo can view your job and register their interest.

Step 2: Review and compare Waterloo 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 Waterloo 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 Waterloo 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 Waterloo

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 Waterloo?

A local loft conversion company in Waterloo 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 Waterloo 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 Waterloo 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 Waterloo

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 Waterloo before agreeing to start the work.

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

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