Loft Conversion Companies in Carshalton

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.4 (12 reviews)

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Some of our top rated loft conversion companies in Carshalton

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Egm construction ltd
No reviews yet
Loft Conversion Company in Carshalton
Building Trust with Quality Work
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Baliabuilders ltd
Rating: 5 out of 5
Loft Conversion Company in Carshalton
We are a skilled carpenters +joiners + roofers and all renovation works also we cover new buildings , house extensions etc over 18 years experience We have been very successful up to date We hold certificates on the trade We make and fit kitchens wardrobes we lay all types of flooring,fit doors and ironmongery we do all types of construction work partitions plaster painting roofing plumbing electrics Vanity units and tiling loft convertion and extensions new build from scratch etc.
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Latest review:
Loft Conversion- 7 Jan 2023
Loft conversion with large dormer, first floor extension, full roof replacement on both house and garage, kitchen renovation including building work and fitting kitchen. Durim and his team have done an amazing job at a reasonable price. Very polite, hard working and eager to please their clients. We feel lucky to have found them and I would highly recommend them.
Rattan construction Ltd
Rating: 3.7 out of 5
Loft Conversion Company in Carshalton
Hi dear costmers we are carried out all building work and we are always try are best to make our costmers happy and satisfied thanks all in advance.
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Latest review:
Loft Conversion- 22 Mar 2024
Glad we didn't hire him. After agreeing on a price for loft conversion and back extension, Mr Rattan kept increasing the price by referring to minor things. Like charging extra for plate that goes on steel. First day when he turned up, he demanded that owner should provide tea and snack for his labour every day. Also he was not ready to include the agreed price on the contract (as he was sub contracting the job to someone else). Glad we cancelled him and hired another builder in his place. I have evidence of all communication I had with him, incase anyone wants it. I would avoid him at all cost.
Phoenix Logis Limited
Rating: 1 out of 5
Loft Conversion Company in Carshalton
We have many years experience in the UK market in refurbishment and domestic and non domestic property alterations. This includes heavy structural alterations and house extensions and reconfigurations for very high end clients delivering in the range of Prime and Super Prime Projects for very high end clients. This getting the projects from cradle to grave making sure we meet our targets on time and budget making sure the clients are happy with the results we deliver. Our works starts with the assistance of making all the necessary paperwork for the client, ground works, internal refurb, heavy and light structural alterations, in a few words all trades in our hand for internal and full external works this including scaffolding.
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Latest review:
Restoration & Refurbishment- 1 Feb 2026
The WORST experience I have ever had with a tradesman. I would strongly advise others to stay clear. There was no schedule of works at any stage. Adrian failed to plan, failed to communicate agreed works, & did not even tell his own workforce what they were meant to be doing. There was no evidence of professional oversight or management, resulting in chaos & extreme delays. I was repeatedly misled. He stated that Building Control had been contacted & paid for; but when I contacted them directly they confirmed no application or payment had been made. He damaged my property & instructions were ignored. He was rude, aggressive & shouted at me in my own home, which I found intimidating as a woman. Neighbours also complained about his behaviour. Despite multiple extensions, the job was left unfinished with little communication. He caused significant stress & a serious loss of time & money. The matter is now being resolved through the courts. I would NOT recommend him under any circumstances
London Refurbishment & Construction LTD
Rating: 5 out of 5
Loft Conversion Company in Carshalton
We are a friendly family business and we cover all aspects of the building trade. We have been trading for over 15 years in the Domestic Building trade. We undertake all large or small works so if you would like some professional advice just call, text, or email us. We carry out all the works on the domestic house: -Kitchens -Bathrooms -Plastering -Electrical -Plumbing -Painting & Decorating -Floors -Extensions -Loft Call now for free estimates and friendly advice.
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Latest review:
Cristian and his team completely transformed our semi-detached home during this extensive renovation. His expertise was invaluable; he was incredibly helpful, advised us on the best layout and color options, and crucially highlighted structural risks regarding what needed changing versus what we could safely keep.His structural work was extensive, replacing weak wooden beams with strong steel beams to support the first floor, wall structures, and the chimney breast/flue removals that safely maximized our bedroom space.On the ground floor, he masterfully partitioned the living room into two bedrooms, extended the open-plan kitchen, added a modern bathroom with a new tub, rebuilt unsafe stairs, and converted under-stairs space into smart storage. Upstairs, he beautifully renovated a bathroom and converted bedrooms into a new kitchen, utility room, and spacious bedrooms. He also completely rewired the house, updated all radiator piping. Absolute professional
AlfredM Building Contractors Ltd
Rating: 5 out of 5
Loft Conversion Company in Carshalton
AlfredM Building Contractors LTD Construction company specialising in • Loft Conversions • Extensions • Full House Refurbishments • Domestic & Commercial Building Services • New Build Eager to bring your dream project to life. Dedicated, efficient and passionate.
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Latest review:
Carpentry- 18 Jan 2025
Alfred and his team have done a great job. Replaced the floorboards, joists, installed insulation and damp proofing and sent the extra mile. Highly recommended and I am already using them for a host of other work.
Breathable Lime
New on MyBuilder
Loft Conversion Company in Carshalton
Breathable Lime are lime plastering and damp specialists for Victorian, period and listed homes across south and east London, Kent and Essex. Most damp in older properties isn't rising damp. It's moisture trapped in the walls by cement render, gypsum plaster and vinyl paints. Victorian homes have solid walls built to absorb a little moisture and let it evaporate. Modern, impermeable materials break that cycle, causing persistent damp, black mould, blown plaster and cold, musty rooms. We fix the root cause. Using Breathaplasta, a modern hemp lime plaster by Adaptavate, we restore your walls' breathability without cement, gypsum or plastics. It regulates moisture, resists mould, flexes with the building and sets in around two hours per coat, so it's far quicker and less disruptive than traditional lime. Every job starts with diagnosing the real cause of the damp. No unnecessary chemical damp-proof courses, injected treatments or tanking, just honest advice and a permanent, breathable solution. Free, no-obligation quotes.
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Loft fitter, carpenter
No reviews yet
Loft Conversion Company in Carshalton
Loft fitter with 20 years experience. High quality and reasonable prices.
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PJL carpentry and building
No reviews yet
Loft Conversion Company in Carshalton
A family run business that provides all aspects of carpentry and building services provided around Surrey and surrounding areas
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VDS PROPERTY SERVICES LTD
No reviews yet
Loft Conversion Company in Carshalton
I have over twenty years of experience in construction work.
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Smutek Construction LTD
No reviews yet
Loft Conversion Company in Carshalton
Experience small business from 2006 ltd from 2015 Extension, lofts conversion, basements. Splitting houses for flats. Kitchen ,Bathroom fittings, wet rooms, stone finish. Electric installation under 18 edition. Smart home,Lutron system Plumbing installation qualified works Heating system :new ,powerflushing, conversing open system to pressure, boiler repair. Gas work: Landlord rec CP12, boiler fiting
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South construction
Rating: 5 out of 5
Loft Conversion Company in Carshalton
Been working in the construction trade for over 20years. Main trade is plastering and skimming which i started 30years ago but can do many different jobs with the skills built over the last 30years. Job quality comes first and work is never compromised.
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Latest review:
Plastering- 26 Aug 2021
Indyreshpal was extremely professional. He plastered my bedroom walls and ceiling, added coving and scerting as well as painted and wall papered my room. He was efficient and his work was of a very good quality. Very happy with his work and definitely will use him again for future work.
Dayview Construction
Rating: 5 out of 5
Loft Conversion Company in Carshalton
Dayview Construction specializes in high end finishing details and top end craftsmanship throughout your project. We have a strong team of different trades to get your project to the standard everyone wants. We do carpentry (1st and 2nd fix), kitchens, bathrooms, refurbishments, extensions, loft conversions, landscaping and much more. Furthermore, we have a strong eye for detail and pride ourselves on being transparent throughout your project.
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Latest review:
Kitchen Fitting- 25 Sep 2022
Brilliant from start to finish made plenty of time for us and our needs and would highly recommend Jack and his team made the whole project effortless thank you Jack
R-Build
No reviews yet
Loft Conversion Company in Carshalton
I have 13 years experience in: 1. Side returns 2. Extension 3. Lofts 4. Basements 5. Electric and plumbing 6. Kitchen and bathroom fitting 6. Carpentry works
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Shakers Studio; Art & Interior Design Company Ltd
No reviews yet
Loft Conversion Company in Carshalton
With 30 years of experience in the industry, Shakers Design is ready to deliver exceptional interior design and refurbishment solutions. From conceptualization to completion, we handle every aspect of your project, ensuring a seamless and stress-free experience. We provide services such as interior design, planning permission and building regulations approval, total and partial refurbishment, renovation, loft conversions and extension, change of use residential and commercial design, construction. Why not take a look at our portfolio photos and contact us today for a free consultation to discuss your project.
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Two Brothers Refurbishment
Rating: 5 out of 5
Loft Conversion Company in Carshalton
At Two Brothers Refurbishment, we don’t just build and renovate — we transform spaces, improve lives, and bring our clients’ visions to life. Built on trust, craftsmanship, and a strong work ethic, our company has quickly earned a reputation for quality and reliability in the UK construction and refurbishment industry. Two Brothers Refurbishment is a family-rooted construction company with a passion for building done right. With years of hands-on experience in a wide range of projects, we have built a team of skilled professionals — carpenters, builders, electricians, plumbers, and decorators — who share one goal: to deliver top-quality work, every time.Our mission is to provide comprehensive construction and renovation services that are tailored to the unique needs of every client. We aim to create functional, beautiful, and lasting spaces while maintaining the highest standards of professionalism, communication, and care. We specialise in a broad spectrum of residential construction services, including: -Home Extensions & Loft Conversions -All aspects of structural work -Full Refurbishments & Renovations -Kitchen&Bathrooms -Renovation&Refurbishment -we can Create/Design/Build -All insurances in place
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Latest review:
Extensions- 30 Jul 2025
We are delighted with the work done by Saby and Mikhail, very easy to work with, high quality finish and they listened to all our requests. 5 stars all the way.

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Carshalton, are rated 4.4 out of 5 based on 12 reviews from customers like you.

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What services are offered by loft conversion companies in Carshalton?

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

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 Carshalton loft conversion company.

Find a loft conversion company in Carshalton 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 Carshalton.

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 Carshalton can view your job and register their interest.

Step 2: Review and compare Carshalton 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 Carshalton 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 Carshalton 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 Carshalton

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 Carshalton?

A local loft conversion company in Carshalton 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 Carshalton 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 Carshalton 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 Carshalton

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 Carshalton before agreeing to start the work.

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

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