Loft Conversion Companies in Cwm

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 3 (6 reviews)

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

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 Cwm

116 Results

Sort by:

LP BUILDERS
Rating: 5 out of 5
Loft Conversion Company in Cwm
I have over 30yrs experience in the building industry and carry out all aspects of work.
Get in touch
Latest review:
Bricklaying- 22 Nov 2019
Great, Darren is very friendly and offered some great advice in how I can achieve what I’m liking for. The work was completed quickly with no interruption. 👍🏼👍🏼👍🏼
Total House Construction
Rating: 5 out of 5
Loft Conversion Company in Cwm
I specialise in carpentry & joinery with over 30 years experience and produce quality work such as roof construction, kitchen fitting, windows, doors, flooring, skirtings, bespoke wardrobes & cupboards, stairs, decking and fencing. Carpentry and joinery is my trade but I also do general building including complete loft conversions, extensions renovations and new builds If you’re looking for a professional quality service I’d be happy to quote for a complete job from design to completion.
Get in touch
Latest review:
Joinery & Cabinet Making- 12 Oct 2018
Turned up on time, got the job done in good time. Cleaned up afterwards will definitely be having him back to do the other jobs.
BGL home improvements and building services
Rating: 5 out of 5
Loft Conversion Company in Cwm
I have been sole trading since 1994 over this time I have undertaken various building projects spanning from building extensions, attic and garage conversions, Insulation, EWI + LWI attic. All aspects of carpentry +joinery. Kitchen Fitting, Bathroom Fitting, conservation works. Roof work from repair to replacement, plastering and plumbing. I have also project managed projects from house building to referb works, domestic and commercial.
Get in touch
Latest review:
Loft Conversion- 23 Jan 2019
Dave originally came to give me a price on a loft conversion, I had just moved into the house and needed a lot of renovation done. I asked Dave to quote for knocking out a utility room and converting it in to a small room with patio doors, what I like to call my 'little conservatory.' area now. I then decided that I wanted to open up the kitchen area into the living room and move my kitchen into the large living room space, this meant knocking down walls and moving existing utilities. This was on going at the same time, I had asked Dave if he could lay a new patio for me and build a pergola. Dave and the team were really helpful in making my vision possible for my new home, nothing is to much trouble. On the big jobs, Dave and the team, worked consistently same time everyday, Monday to Friday. Dave really does have a good eye for creating spaces that I needed and creating solutions. My neighbours liked Dave's work so much they had him for their kitchen renovation too! when the work was complete, I had an off the street offer to by my house, which I declined. Dave came back to complete my bathroom, Dave and the team are hardworking, reliable and reasonably priced, given that so many people are charging a fortune just to knock a wall down these days, his quotes are all laid out in advance with detail of plans and he stays on site until the job was completed. I would happily recommend BGL. Thanks Guys fantastic job.
Will griffiths carpenter and construction
Rating: 5 out of 5
Loft Conversion Company in Cwm
Im a fully qualified master carpenter with 37years experience in all aspects of construction including managing large multi million pound sites i am experienced in listed buildings and I have completed many prestigious projects
Get in touch
Latest review:
Will completed a complicated loft conversion for us. He is meticulous, pays great attention to detail and his work is of a very high standard. We are very pleased with the end result and we’re grateful for his advice during the project. He is reliable and professional. He wants the customer to be happy with his work. I would highly recommend Will.
Lewis Preece Building Contractor
Rating: 5 out of 5
Loft Conversion Company in Cwm
I'm a qualified bricklayer by trade which I have 15 years of experience. I also won skillbuild for my quality of work as an apprentice. I have been building eco-houses in Bristol for the last 2 years. Doing everything from foundations, to loft conversions. I will undertake a wide variety of work including, extentions, house renovations, patios, garden walls, driveways, fencing etc. I pride myself on doing the job properly. I always finish the job and to a very high standard.
Get in touch
Latest review:
Lewis was very good from the start by coming the same day to give us a quote that was reasonably priced and when he came to do the job arrived early was prompt very pleased with his work would definitely hire him again
S. Davies
Rating: 4.9 out of 5
Loft Conversion Company in Cwm
Over 30 years in the trade, specialising in traditional methods of stonework, oakwork and the restoration of churches, castles and farmhouses. Also a vast experience in all aspects of roofing, including natural wooden shingles, and timberwork ie loft conversions, structural framing etc. Decking, patios, laying of flagstones and traditional lime pointing undertaken. I can also be contacted on Facebook for a free and competitive quote. S J Davies stonework and timber.
Get in touch
Latest review:
Stonemasonry- 2 Dec 2024
Victorian house, front, lime repointing. Steve was excellent and clearly very knowledgeable and enthusiastic about his trade. Good communication, pleasure to deal with, reasonably priced job. Recommended
Luke Williams Carpentry
Rating: 5 out of 5
Loft Conversion Company in Cwm
I’m a self employed carpenter with over 15 years experience in all aspects of carpentry work, including loft conversions, extensions, new build and renovations. I form part of a building contracting business which specialises in all areas of building work, from small extensions to new builds. We have the resources to manage the works from groundwork’s to finishing touches on your build.
Get in touch
Latest review:
Carpentry- 3 Jul 2023
My immediate impression of Luke was that he is extremely professional in his manner and way of working. He was efficient, had all of the tools needed and worked quickly but with great precision and accuracy. A true professional in his field and I would be happy to recommend him to anyone looking for some carpentry work in their home.
ecas systems
Rating: 4.7 out of 5
Loft Conversion Company in Cwm
We are an established construction business with a qualified, dedicated and friendly building and electrical team who guarantee a high standard of work with value for money. We can carry out any kind of home refurbishment that you may require from an extension to a new bathroom or kitchen. All our work is guaranteed and customer satisfaction is top of our list !!
Get in touch
Latest review:
Conversions - General- 20 Feb 2020
On time, cleaned up mess, done a fabulous job, kept us informed every step of the way, Happy with the outcome Thanks
N&B Construction
Rating: 4.9 out of 5
Loft Conversion Company in Cwm
A multi skilled team with extensive years of experience in the building industry carrying out all aspects of construction from building a house to adding a socket we have everything covered in an incredibly fast growing company. We pride ourselves on providing quality work at all times and guarantee all work undertaken, whilst adhering to all budgets.
Get in touch
Latest review:
Carpentry- 3 Feb 2025
Really friendly, fast working and a masterpiece of their craft, 100% recommend.
Cariad Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Cwm
We undertake all construction, maintenance and renovation work and fit,design and supply kitchens/bathrooms.
Get in touch
Latest review:
Kitchen Fitting- 7 Jun 2022
Andy & Morgan are friendly, knowledgeable, skillful guys, they completely remodelled our Hallway & Kitchen. Blocked off the hallway, thereby extending kitchen area. Fitted a new boiler in a new position, gutted & removed old kitchen and fitted new. Throughout the process they kept us informed and advised us on solutions when problems arose, their attention to detail is marvellous. They took our ideas and created a kitchen we're really chuffed with. We have other projects in mind for the future and will be back to talk them through with Andy & Morgan. Once again, many thanks.
360 Design & Build Ltd
Rating: 5 out of 5
Loft Conversion Company in Cwm
Do you need more space but don’t want to move? However big or small the work, 360 Design & Build Ltd can help you with every kind of domestic construction. We provide the detailed plans which are based on your need for space, providing a full turnkey service making the project as hassle free as possible. A customer friendly team who takes pride in our work, completing all jobs to the highest of standards.
Get in touch
Latest review:
Extensions- 21 Nov 2019
Really happy with the work that Kev and his team have done for us. They kept us informed of progress all the way through and dealt with everything that came up professionally and expertly.
DHE Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Cwm
At DHE Construction Ltd we are focused on providing carpentry and building services with the highest levels of customer satisfaction & we will do everything we can to meet your expectations. We will keep in regular contact throughout the project making sure you are up to date with progress.
Get in touch
Latest review:
Conversions - General- 11 Feb 2019
I had an idea and Dan and Mark made it a reality! Excellent attention to detail and really good customer service.
KVC Carpentry and Building
Rating: 5 out of 5
Loft Conversion Company in Cwm
KVC Carpentry & Building has a wide range of knowledge in all areas of the building trade. We offer an all round building service so you don't have to organise different trades. We cater from the smallest of jobs to the largest of projects such as extensions. We work with you every step of the way.
Get in touch
Latest review:
Loft Conversion- 26 May 2015
Thank you a Keiran, we can now make good use of our attic.!! All work completed well and without fuss or delays. Communication was great. Would be very happy to pass his name and number on to friends.
NBC carpentry and building services
Rating: 4.5 out of 5
Loft Conversion Company in Cwm
My company name is Mbc carpentry and building services I can't change N to M. We are a small family run business with all the trades at hand and very professional at what we do. We undertake all the trades and specialists in kitchens, bathrooms, plastering, loft conversion, and roof. We pride ourselves on timekeeping excellent quality work and fantastic on price. Thanks Mark.
Get in touch
Latest review:
Bathroom Fitting- 19 Aug 2020
Mark gave me a price and a date for a bathroom refit. A week before the bathroom was due to be started Mark did not reply to any phone calls, messages or e-mails. Knowing that we were taking tiles off in preparation for the job, he never turned up. Mark has left us with no bathroom and no reason as to why the job could not be completed. Extremely unprofessional. Would definitely not recommended.
Valleys Plastering & Construction
Rating: 5 out of 5
Loft Conversion Company in Cwm
I have been plastering for 25 years, from lathe and lime, float and set to skimming and k rend, I can do it all. Nothing is too big or complex, and I'm quite happy doing a little ceiling here and there. Shed loads of experience and plenty of passion. Have built plenty of extensions and new builds from scratch over the years with my team but happy on the trowel now. I have been plastering all of my adult life I am 40 years young. Thanks
Get in touch
Latest review:
Plastering- 2 Oct 2026
We couldn’t be happier with the work Valley Construction are carrying out on our home. They are currently undertaking a large project for us, and we have been immensely impressed with the service, professionalism and quality of workmanship from start to finish. The new rendering and fascias look absolutely fantastic and have completely transformed the appearance of our home. Max and his team are incredibly professional, friendly and hardworking, and it’s clear that they take real pride in what they do. Everything is being carried out to an exceptionally high standard, with great attention to detail and a real focus on getting everything right. Communication has also been excellent throughout, which makes such a difference when having major work carried out on your home. We are absolutely delighted with the results so far and are really looking forward to seeing the finished project. We would have no hesitation whatsoever in recommending valley construction!
P A carpentry and building
Rating: 5 out of 5
Loft Conversion Company in Cwm
City and guilds basic and advanced craft 35 years experience on the tools Kitchens bathrooms attic conversions to full renovations I can do it all
Get in touch
Latest review:
Bathroom Fitting- 1 Aug 2026
Excellent. We are really pleased with the job Paul has done. An experienced and knowledgeable tradesman.

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Cwm, are rated 3 out of 5 based on 6 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 Cwm?

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

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 Cwm loft conversion company.

Find a loft conversion company in Cwm 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 Cwm.

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 Cwm can view your job and register their interest.

Step 2: Review and compare Cwm 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 Cwm 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 Cwm 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 Cwm

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 Cwm?

A local loft conversion company in Cwm 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 Cwm 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 Cwm 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 Cwm

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 Cwm before agreeing to start the work.

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

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