Loft Conversion Companies in Waterloo

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.7 (12 reviews)

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Some of our top rated loft conversion companies in Waterloo

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First Int. Project Limited
Rating: 4.4 out of 5
Loft Conversion Company in Waterloo
Back on MyBuilder after 7 years !!! Design and build Architectural team Structural engineers team Build and construction Our business is based on TRUST | QUALITY | CARE Our company cover the following trades: -steel erecting - steel structures -roofing - loft conversions -plasterers - internal skimming -painters and decorators -kitchen installers -bathroom fitters -bricklayers - for extensions -landscapers -electricians -gas engineers -carpenters - floor, doors, structural -windows installers -bespoke furniture
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Latest review:
Bathroom Fitting- 15 May 2017
We hired Inside/Outside to re-do our bathroom. New sink, bath, toilet, tiles, lower ceiling, re-hang the door and move the radiator. They were polite, honest, professional and very hard working. When they came round to quote they were noticeably more thorough and showed more attention to detail than others. Their quotes were very competitive, their work was good and they removed all the rubbish as well. They also came back afterwards to check everything was working and to deal with a couple of 'snags'. We will be using them again.
Heat input plumbers
Rating: 5 out of 5
Loft Conversion Company in Waterloo
30 years experience in plumbing and heating and boiler repair, maintenance and installation Domestics and commercial Also design and installation of the every aspect of bathroom,Kitchen.and all related to plumbing needs.
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Latest review:
Mansour is one of the best Contractor i have worked with,he is very accurate and helpful, knowledgeable, and most importantly professional, he recently completed our one of properties, he carried out, our central heating and new boiler installed, he renovated our less able bathrooms ,and finally kitchen upgrades in very precise, everyone in our firm love it, We highly recommend Mansour from heat input plumbers. Many thanks Mansour
LLC projects limited
Rating: 5 out of 5
Loft Conversion Company in Waterloo
At LLC PROJECTS LTD, we deliver high-quality building and renovation services across London, Surrey, and Hampshire. With over 16 years of experience in the construction industry, our team specialises in all aspects of building works, maintenance, and plumbing — from full refurbishments and extensions to kitchen and bathroom installations. We pride ourselves on excellent workmanship, attention to detail, and reliable project management from start to finish. Most of our work is carried out in-house to ensure consistent quality and high standards. Whether it’s a small repair or a large-scale project, we approach every job with professionalism, transparency, and care. Contact us today to discuss your next project and see how we can bring your vision to life
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Latest review:
I recently hired LLC Projects Limited to refurbish my ground floor and add a new bathroom, and I couldn’t be happier with the results. From start to finish, the team was professional, reliable, and truly cared about delivering quality work. The new bathroom looks amazing, and the ground floor transformation exceeded my expectations. Communication was great throughout, and they kept everything on track and tidy. The crew was friendly, and they handled any concerns I had quickly. I’d definitely recommend LLC Projects Limited for any home improvement work—they’ve earned my trust, and I’ll be calling them again for future projects
All Aspects Group Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
All Aspects Construction is a multi-disciplinary contractor who specialise in the construction, refurbishment and maintenance of commercial and domestic buildings. We focus on delivering the very best craftsmanship in all services delivered and a quality end product through sustainable construction all within an approachable and professional manner.
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Latest review:
Painting & Decorating- 30 Apr 2019
Thoroughly recommend this Company, very professional, industrious, thorough, and exceptionally helpful, left the working areas clean and tidy, definitely value for money, delighted with the job of work carried out.
AIA BUILDING CONTRACTORS LTD
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Our Family run business is built purely on word of mouth and on our reputation with genuine authenticated reviews available on our website. we take pride in all aspects of our work from home improvements inside and out, Bathroom Refurbishment, New Roofs, Painting and Decorating, Loft Conversion, Rear Extension, Velux windows, Roof Repair, Gutters and Drain pipes unbloking
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Latest review:
Bathroom Fitting- 25 Mar 2022
Fantastic job very pleased with my bathroom under the stair. Thank you Ben. Pamela Robinson
Hearne House Ltd.
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Hearne House offers a build and project management service across London and the South East. We manage every aspect of property refurbishment and new build homes, and our work includes extensions, basements, loft conversions and interior design. We specialise in high-end residential work in Central London.
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Latest review:
Restoration & Refurbishment- 16 Jan 2020
Extremely happy with the job carried out by Hearne House. From the initial meeting to follow ups to the final job the work was carried out with care and I was consulted every step of the way and within the timeframe laid out when the work began. Nick and Claudia were both very friendly and professional to myself and my client who has autism and worked alongside myself and his solicitors to ensure he got the flat he wanted. highly recommend.
Velvet Construction
Rating: 5 out of 5
Loft Conversion Company in Waterloo
About Velvet Construction: 5+ year experience in the building trade. CSCS Black Card Holder All health and safety certificates. Velvet Construction has a large team of qualified tradesmen, delivering a high standard of workmanship at a competitive price. For more information on our services please contact us. We offer free quotations and all work is insured and guaranteed.
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Latest review:
Restoration & Refurbishment- 10 May 2019
Velvet Construction are a friendly and professional contractor who work hard to deliver an excellent service. We have worked closely with them and their practical and dynamic approach is refreshing to work with in a professional capacity and we would highly recommend them. Their quality of workmanship is excellent which is largely driven by their own high standards which they monitor closely and consistently. They are organised and communication is always great. A big thank you to the whole team and Specially Negedet being a joy to work with . Highly recommend him and his hard work time. Thank you
GRAND DESIGNS INTERNATIONAL LTD
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Grand Designs International (GD) | Architectural, Engineering & Construction Services At Grand Designs International (GD), we are dedicated to delivering high-quality architectural, engineering, and construction services tailored to meet our clients’ unique needs. Backed by over 20 years of expertise, our team specializes in transforming visions into reality—whether you're planning a new build, home extension, loft conversion, or full-scale renovation. With a strong foundation in innovation, sustainability, and precision, we provide end-to-end project solutions, from initial design and planning permissions to structural calculations and final construction. Our commitment to quality, efficiency, and client satisfaction ensures that every project is completed to the highest standards. Why Choose Grand Designs International? ✅ Full-Service Expertise – From architectural planning to construction, we handle every stage seamlessly. ✅ Planning & Building Regulations Specialists – We navigate approvals efficiently to prevent delays. ✅ Experienced & Certified Team – Qualified engineers, architects, and builders with a proven track record. ✅ Tailored Solutions – Every project is custom-designed to meet your style, space, and budget needs. ✅ Transparent Pricing & Project Management – No hidden costs, just reliable service with regular updates. ✅ Fast Turnaround & On-Time Delivery – We work efficiently without compromising quality. Our Services 🏡 Architectural & Planning Services Planning Applications & Building Regulations Approval Concept & Detailed Design Interior Design & Space Planning 3D Visualizations & Rendering Enforcement & Retrospective Planning 🏗️ Structural & Engineering Design Structural Calculations & Drawings Civil & Structural Engineering Services Quantity Estimation & Cost Planning 🔨 Construction & Building Services Home Extensions & Rear Extensions Dormer Loft Conversions & Flat Conversions New Build Homes & Full Renovations Project Management & Site Supervision Construction Planning, Procurement & Logistics Quality Control & Safety Management At Grand Designs International, we believe in delivering excellence, one project at a time. Our reputation for integrity, professionalism, and top-tier craftsmanship makes us the preferred choice for homeowners and businesses across London and beyond. 📞 Get in Touch Today! Let’s discuss your project and bring your dream home to life.
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Latest review:
★★★★★ Highly Recommended! I had an existing 3-bedroom rundown property and contacted multiple builders before meeting Director Mr. Q Nawaz. From our first meeting, I was impressed by his ideas and the fact that Grand Designs could provide all services in-house. Initially, I proceeded only with the planning application to see if what he promised was possible—and YES, he delivered! My application was approved as he assured me. Seeing this success, I entrusted them with the entire construction project, and Grand Designs completed it within just 6 months, despite the challenges of COVID-19. Not only did they build my project, but they also added significant value to the development. I’m proud to have worked with them, and their exceptional work on my St Albans development is now featured in their portfolio. Within one year, the value of my property increased by £500,000—a testament to their expertise! Extremely professional, highly skilled, and very reasonably priced. You don’t need to go anywhere else—Grand Designs is the complete package!
Ed’s loft conversions Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
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.
CLOVER & APPLE CARPENTRY LTD
Rating: 4.8 out of 5
Loft Conversion Company in Waterloo
CLOVER & APPLE Carpentry is dedicated to delivering superior construction and carpentry services throughout London. As a family-run business with over 22 years of experience and qualified expertise, we take pride in offering bespoke solutions for both residential and commercial clients. We distinguish ourselves with expert craftsmanship, undertaking projects of every size with the same dedication to quality and detail. We provide a wide range of services including but not limited to fire door installation, flooring, bespoke kitchens and bathrooms, and partial and full scale renovations. Our carpenter is FireQual certified for Fire Door installations and is also a certified inspector, guaranteeing full compliance with fire door regulations for your property. With us, you’ll always have safety, quality, and peace of mind built in. From custom furniture to complete building projects, we approach every job with the same commitment to uncompromising quality and expert craftsmanship. Our mission is to bring your vision to life, enhancing your home and lifestyle with pieces and spaces that are built to last.
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Latest review:
Carpentry- 19 Aug 2024
Good
A.R.Renovators
Rating: 5 out of 5
Loft Conversion Company in Waterloo
We are a family-run team made up of an experienced Architectural Technician and a skilled site manager and builder with over 20 years of experience delivering high-quality renovation services across London. Combining technical expertise with hands-on construction knowledge, we’re committed to providing reliable, professional service with attention to detail at every stage. We take pride in meeting deadlines, staying within budget, and exceeding client expectations through clear communication and quality workmanship.
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Latest review:
Conversions - General- 20 Jun 2026
My partner and I hired Alonso and Alex to undertake a full renovation of our 3-bedroom house in SE8. Having received quotes from several other contractors, the moment we met them, it was clear they were clear communicators, approachable and dedicated to their clients. We’re incredibly happy with the work they did. The scope of work was highly varied, including rectifying historical damp issues in the lower ground room, external repairs to the roof drains and chimney, installing two new bathrooms, plus all the other internal and external work you’d expect from a full renovation. All of which was completed to a very high standard! They were always open to discussing and rectifying anything we weren’t completely happy with, or problem-solving whenever unexpected issues arose (which always happens when renovating a property of this size!). The team are lovely, trustworthy people who are a genuine pleasure to have in your home. I can’t recommend them highly enough.
W8 Build Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
Hi, I’m Jon, the Founder of W8 Build. With over three decades of experience in both modern and listed buildings, I’ve dedicated my career to transforming spaces – from bespoke home extensions and loft conversions to the careful restoration of historic landmarks. I even had the honour of working on Windsor Castle alongside Her Majesty The Queen after the 1992 fire, a project that taught me how to balance grandeur with precision. At W8 Build, we believe exceptional craftsmanship should be accessible. Grounded in values of integrity, reliability, and meticulous attention to detail, my team and I bring the high standards of historic restoration to every project – all at market-competitive rates. Whether you’re seeking a stylish roof terrace, a complex basement conversion, or a heritage-sensitive renovation, you’ll receive a fixed-price, transparent proposal and a commitment to excellence that makes quality affordable. There are no hidden fees or inflated costs here – just clear communication, thoughtful planning, and the peace of mind that comes from working with a team that treats every project, whether a royal landmark or your family home, with equal care and professionalism. Let’s work together to bring your vision to life, blending timeless quality with modern practicality. Your dream space deserves nothing less. W8 Build by Jon Taylor
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Latest review:
Extensions- 14 May 2025
Jon was able to take a failed project from a previous contractor and manage historic building preservation, regulation in Westminster, a lack of parking, plumbing from the Victorian age, and a demanding client to deliver a beautiful result. I love my garden flat extension, it manages to respect the historic nature of a building from the 1840s while also adding amenities to be proud of in 2025. Thank you Jon (and team) and best of luck with future business.
AEE Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
General renovations, electric, plumbing, decoration, painting, kitchen fittings, tiling, flooring, bathrooms, extensions, loft conversions and property maintenance
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Latest review:
Handyman- 27 Jul 2023
Very professional and polite man. Job done neat and professionally. Would highly recommend.
Buildmore Homes Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
We are a construction company based in Bayswater , with over 15 years of experience in construction, we can handle anything.Make your house become a home and be one of ours happy customers. We take pride in our workmanship and 100% customer satisfaction is our priority. We will try our absolute best to eliminate any unnecessary inconvenience and provide to our client with a positive building experience.
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Latest review:
Plumbing- 1 Oct 2018
Marcos, came to replace my basin sink tap and box in some pipe work. reasonable price and good quality workmanship. he prompt on arrival very reliable and would use his services again. A++ my builder
RM Reid Ltd
Rating: 5 out of 5
Loft Conversion Company in Waterloo
My name is Ricky and I am the Director of RM Reid ltd. I have over 25 years experience with many trades. Between myself and my employees we have a vast amount of skills/knowledge within the construction industry. I believe you are only as good as your last job and seeing as I have 100% feedback I believe my reputation speaks for itself. We are Trustmark and chas accredited. Fully insured with warrantys available on major projects
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Latest review:
Restoration & Refurbishment- 27 Mar 2022
Ricky Reid I was looking for a company who could help me with a light refurbishment (kitchen, bathroom and full decoration) of a one bedroom flat in south west London to be ready for rental within 15 days. I posted my ad request on mybuilder.com and a few companies contacted me. Ricky Reid, was the third one I met and eventually the one I chose. Why? R. was straight forward, no gimmicks and did his best to understand what my needs were from day one. Especially when my vision at the start wasn’t that clear. Him and his team delivered within the time frame agreed as well as within the quote given plus a few extras that hadn’t been considered at the start of the project. He was always available for questions or clarifications needed over the phone at any time! A rare quality in itself in the building world. If there was anything that could be improved, this would be clarifying certain jobs that were on the quote (and I mean specifically what they exactly covered) from the start to avoid stingy or unexpected surprises cost wise. However this isn’t Ricky’s fault and I take my full responsibility as I should have done my homework before hand. Overall satisfied with the result and I would certainly contact Ricky and his team for my next future projects and so should you reading this review. Thank you Ricky and all the best in your company venture.
Abu Fahad Design & Build
Rating: 3.9 out of 5
Loft Conversion Company in Waterloo
I am an Architecture & Planning Consultant. I have been practising architecture for over four years now.I have experienced many complex planning applications and managed to achieve approvals successfully. In my team, I have structural engineers and builders to provide a full package to my clients from design to build.
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Latest review:
Architecture- 7 Feb 2019
Professional, honest and reliable.

4.7

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Waterloo, are rated 4.7 out of 5 based on 12 reviews from customers like you.

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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.