Loft conversion companies in Clapham

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 Clapham

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Highgate Building Company Ltd
No reviews yet
Loft Conversion Company in Clapham
Managing Director Kevin McKenna is an experienced Quantity Surveyor & project manager by profession and has over 30 years experience within the industry with over 20 years contracting experience -Family business with my brother who also has over 30 years experience in the industry - trade background and project management experience. General building works - Specialist Loft division ' HIGHGATE LOFTS'
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Parris Development
No reviews yet
Loft Conversion Company in Clapham
Parris Development covers the full spectrum of residential renovation - from structural remodelling and internal reconfigurations to restoring listed buildings and navigating conservation area constraints. We handle landlord licences for alterations, liaise with building control, and ensure all work is fully compliant with the latest Building Regulations and British Standards. Our team excels at complex projects and collaborates closely with architects, planning consultants, and engineers to deliver seamless, regulation-compliant outcomes that protect your investment and enhance your living space.
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Crimson Design & Build Ltd
Rating: 5 out of 5
Loft Conversion Company in Clapham
As a contractor I've been in the building business for five years now and my reputation is growing from strength to strength. So far all my jobs have been referrals from previous customers. I've expanded my team and they all know meeting customers's expectations is number 1 priority.
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Latest review:
Firoj and his team renovated a bathroom for me in March 2015. He gave me a fixed cost for his labour and what turned out to be a very accurate estimated cost for all the parts/materials at the outset. He also gave me a completion time of 9 days with 1 extra day for 'spillovers' and 'unforseen delays'. He finished the job at exactly 9 days and still came around on the 10th day to see how everything was working. The quality of his work was excellent, to say the least. He attention to detail was admirable, as was his commitment to delivering a finished product that would last several years. This focus on detail and longevity is something that really sets Firoj apart from other builders, who often see such jobs as just another task to be completed before moving onto the next job. I have no hesitation in recommending him. Several months later my bathroom still looks great and everything works.
LS TRADEMAN LIMITED
No reviews yet
Loft Conversion Company in Clapham
LS TRADEMAN LIMITED company based in South East London. We have over a decade of experience in building, conversion. renovating, refurbishment and much more. We employ / sub contract only people we know are capable of offering the same high standard, and reliabilty as we do.
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synergic design studio
No reviews yet
Loft Conversion Company in Clapham
My name is Sanjay Venkatakrishnan and I am an Architectural Assistant (Part 2) with a Master's degree in Architecture (RIBA Part 2) from the University of East London. I have extensive experience working with various architectural software such as Rhinoceros 3D, Autodesk AutoCAD, Autodesk Revit, Lumion, V-Ray, Enscape, and Adobe Creative Suite.
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V.f. Construction
Rating: 5 out of 5
Loft Conversion Company in Clapham
Hello, My name is Pavlin ,I have over a decade of experience in wide range of construction and carpentry projects..I’m specialised in carpentry and wood flooring needs. If you’re looking to install new brands, hardwoods floors , refinishing existing ones, or repairing specific areas, I’m dedicated to achieve results that transformers your space with beauty and durability. I work closely with clients. I ‘m looking forward to the opportunity to work with you.
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Latest review:
Hard Flooring- 24 Nov 2024
Great job, quick and efficient. Thank you so much!
Carnot Construction Limited
Rating: 5 out of 5
Loft Conversion Company in Clapham
Carnot Construction are committed to ensuring our clients are satisfied from beginning to end, we aim to take the stress out of building work and complete all projects as swiftly and cleanly as possible. We ensure our clients are in safe hands with strict contracts in place to protect both parties. We specialise in Extensions, New builds, Loft Conversions, General Conversions, Kitchen and bathroom renovation/fitting.
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Latest review:
Extensions- 15 Aug 2018
100% RECOMMENDED Michelle and her partner measured up and competitively quoted within a short space of time. She was then very patient and supportive when unforeseen planning issues popped up and set the start date back by quite some time. Once building started, all questions were promptly answered by either the site manager or Michelle, both being available at all times. I was away for the duration of most of the job and it was very reassuring to know that I was leaving it all in capable and honest hands. The workers were very proficient and tidied up after themselves at end of each day. They also put in some very long hours at times to hasten the work. I was also impressed by the handling of unexpected problems during the building (mainly invasive tree stumps!). I am absolutely thrilled with the end result. High quality workmanship and a beautiful building which I am sure will last many years. I would certainly recommend them without a doubt.
LUCKY BUILD LIMITED
No reviews yet
Loft Conversion Company in Clapham
Lucky Build is a London based property renovation and refurbishment company serving residential and commercial clients. With years of experience, we specialise in full refurbishments, bathroom and kitchen installations, and damp proofing and timber preservation, delivering every project with precision, compliance, and care. Our qualified team of builders, gas engineers, plumbers, and damp surveyors manage each stage from design through to completion. We handle full renovations, single room upgrades, leak detection, and complex damp issues, providing reliable workmanship and long lasting results. Our services include property renovation and refurbishment for modern and period homes, the installation of bathrooms, en suites and wet rooms, bespoke and pre made kitchen installations with full plumbing and electrical connections, certified gas and plumbing work including boiler servicing and leak detection, and professional damp and timber inspections with detailed reporting. We also carry out damp proofing and timber preservation using proven methods that follow industry standards. Our focus is on quality, transparency, and long term value, combining skilled craftsmanship with reliable materials to deliver desired perfection!
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JONES CONSTRUCT LIMITED
Rating: 4.9 out of 5
Loft Conversion Company in Clapham
Jones construct ltd is a construction company that offers our service to commercial and domestic properties. We take great pride in our projects from start to finish to create that stress free build to our clients making sure we go that extra mile. Covering from small maintenance works to loft conversions .
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Latest review:
Carpentry- 10 Apr 2026
Extremely efficient and professional. Very responsive and fairly priced.
DS Elite House Ltd
No reviews yet
Loft Conversion Company in Clapham
To edit
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Baco Construction Ltd
No reviews yet
Loft Conversion Company in Clapham
Baco Construction Ltd offers services like house extension, loft conversion, house refurbishment in London. We can also help you with your home interior design
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INM Construction Ltd
No reviews yet
Loft Conversion Company in Clapham
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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R&T Carpentry & Construction
Rating: 5 out of 5
Loft Conversion Company in Clapham
Ryan - I am a very hard working individual and always provide a pleasant service. I have over 13 years experience in the fields i cover. I am fully insured. We cover a very wide range of works including, loft conversions, extensions, garage conversions, Media walls, custom garden studios, Roofing, porches, carpentry, painting and decorating and some plumbing and electrical works. We always welcome new customers and will be happy to quote any work you require, however big or small. Thank you.
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Latest review:
Conversions - General- 11 Feb 2022
Basic one day job but Ryan was reliable. Quoted within a few days and Job completed within a couple of weeks No problems at all.
PBS Contracts (Design&Build) Ltd
No reviews yet
Loft Conversion Company in Clapham
PBS Group UK is the trading name for PBS Contracts (Design & Build) Ltd - family run, multi discipline, construction and bespoke architectural joinery fabricators established over 10 years ago. We operate from our 10,000sqft office and joinery workshop in Park Royal, NW10. We employ approx. 40-50 staff both within the workshop, on-site and in the office, including a Project Manager, Site Managers and supervisors overlooking a talented workforce.
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Vgaas uk Ltd
Rating: 3.7 out of 5
Loft Conversion Company in Clapham
We specialise in loft conversions, extensions and new builds with over 10 years of experience.Excellent communication and planning is our main focus. We have a dedicated project manager on each site on top of a skilled foreman. All the team is skilled and experienced in their respective trades. We have had privilege to work on very demanding projects over the years, which required a lot of skill and planning on our part to deliver them successfully. Give us a call for a no obligation quote.
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Latest review:
Loft Conversion- 29 Apr 2023
My house was totally renovated by this company. I was very satisfied with much of the work. I was informed that I would be given the buildings certificate and the electrical certificate for works completed once final payment was received. I was given the buildings certificate. I was not given the electrical certificate, although the house had been fully rewired as part of the work. I chased up for the certificate but my requests were ignored. I was aware an electrician had come to inspect the works, and the builder who had been on site indicated it appeared to go well. I have now just recently had the electricity in the house inspected by an electrician and have found there were issues that required rectifying.
ACAR BROTHERS LIMITED
No reviews yet
Loft Conversion Company in Clapham
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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4.6

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Clapham, 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 Clapham?

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

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 Clapham loft conversion company.

Find a loft conversion company in Clapham 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 Clapham.

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 Clapham can view your job and register their interest.

Step 2: Review and compare Clapham 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 Clapham 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 Clapham 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 Clapham

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 Clapham?

A local loft conversion company in Clapham 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 Clapham 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 Clapham 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 Clapham

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 Clapham before agreeing to start the work.

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

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