Loft Conversion Companies in Harefield

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.3 (6 reviews)

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Some of our top rated loft conversion companies in Harefield

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Heathrow Roofing and Building Services Ltd.
Rating: 4.4 out of 5
Loft Conversion Company in Harefield
Heathrow Roofing and Building Services Ltd serves as a leading contractor in the Slough area. We’re a team of fully-certified professionals who tackle everything from complex large projects to smaller scale jobs. Fueled by our commitment to excellence, we go the extra mile to make sure clients are completely satisfied with our work. We do all kind of roofing work and loft conversations, roof trusses, roof cuts, all kind of roofing, carpenter with 13 years experience.
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Latest review:
Roofing (Pitched)- 29 Nov 2020
Heathrow roofing was diligent, knowledgeable and respectful. Completed all jobs with the time frame plus extras whilst on the job, all to a high standard. Unequivocally recommend Asad and his team
JKD building service
Rating: 5 out of 5
Loft Conversion Company in Harefield
14 years experience with House extension, loft conversion, kichen, bathroom and many more.
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Latest review:
Bathroom Fitting- 22 Nov 2019
Perfect job and attention to detail. Wall & floor tiles look perfect. Very tidy, clean and hard working builder. Nothing seemed to be a problem. I also painted the wall. Love the bathroom now. Thank you !
Bam builders ltd
Rating: 5 out of 5
Loft Conversion Company in Harefield
We do all types of building work..
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Latest review:
Tiling- 6 May 2024
Work was carried out quickly and to a good standard.
S S T Construction UK Ltd
Rating: 4.8 out of 5
Loft Conversion Company in Harefield
We got skillfull team.I have 16 years experience.
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Latest review:
Loft Conversion- 24 Nov 2016
I had few quotations for my Loft Conversion, but Harvinders price was very reasonable and I went to see his work which was very neat and tidy. During the work he only took Sunday's off and was at my house 8 in the morning and finished the loft in given time.i will definitely recommend him to anyone need work at there place. 5 star ************
hertfordshire plumbing & handyman services
Rating: 5 out of 5
Loft Conversion Company in Harefield
I’am a highly experienced and skilled professional ready to help you with any project you have in mind I provide high quality, efficient and clean services, in a covid-secure way and at competitive prices. I aim to ensure that every job is delivered on time and to the highest standards.
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Latest review:
Bathroom Fitting- 15 Jun 2022
Mateusz, better known as Matthew, has just completed a job at my house consisting of replacing our bedroom ceiling, installation of downlights, repairs and redecoration, as well as the installation of a concealed shower, shower tray and cubicle, which involved some retiling and electrical repairs to mirror lights & switch. Matthew has done a great job, working conscientiously and paying attention to every detail. We are delighted with the outcome and it has been a real pleasure to have him working here. The work has been completed to a high standard and for a very reasonable price. I have already recommended Matthew to a neighbour and I would not hesitate to ask him back to do more work for us in the future.
Sukhpreet Singh
Rating: 5 out of 5
Loft Conversion Company in Harefield
Follow blueprints and building plans to meet the needs of clients. Install structures and fixtures, such as windows and molding. Measure, cut, and shape wood, plastic, and other materials. Construct and install building frameworks, including walls, floors, and doorframes. We do all type of construction work. When it comes to electrical help, our expertise shines through. As experienced professionals in the field, we offer comprehensive services to meet all your electrical needs. From troubleshooting and repairs to installations and upgrades, we've got you covered. Whether it's fixing faulty wiring, installing new outlets, or upgrading your electrical panel, we handle every task with precision and care. Safety is our top priority, and we adhere to all industry standards and regulations. As experts in floor and tiling work, we bring a wealth of experience and skill to every project. From consultation to completion, we excel in delivering high-quality results that transform spaces. With meticulous attention to detail, we ensure precise measurements and flawless installation, whether it's hardwood, tile, or laminate flooring. Our expertise extends to surface preparation, including leveling and waterproofing, to ensure a durable and long-lasting finish. As professional indoor painters, we're skilled artisans with years of experience. From surface preparation to flawless paint application, we excel in every aspect of our craft. Our expertise extends beyond technique—we're problem solvers, ensuring durability and quality. Equipped with the best tools and safety gear, we deliver exceptional results while prioritizing our team's well-being. From consultations to final inspections, our dedication to client satisfaction shines through.
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Latest review:
Carpentry- 5 Aug 2024
Good job .. polite, good work, good lads
TJ Elite Building Services LTD
Rating: 5 out of 5
Loft Conversion Company in Harefield
We have a team of qualified builders, electricians, plumbers, roofers to mention a few covering all aspects the building services we offer. Accumulating over 10 years of experience, covering all requirements of our customers, we aim to deliver a high quality service for your requirements We can provide all aspects of job to be covered from start to finish, from drawing plans, approval to the high quality finish of the job.
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Latest review:
Diligent, professional and finished job to a high standard. Only needed flooring done in all rooms but after seeing the quality of work, had further work carried out in gardens front and back. Have had no issues since and hes the one family goes to for any jobs that need doing, as know work gets done and we can trust that it will be of high standard.
Prab builders ltd
Rating: 5 out of 5
Loft Conversion Company in Harefield
Prab Builders is one of the leading and fast growing constructions companies in the UK who take projects and work in a atmosphere where one can get everything under one roof. We have a team of experience people and we understand what our clients want. And as result we give total satisfaction to our customers and convert ideas into reality to give our best We are in this field from the past 18 years .Our service is professional,caring,and high quality and Customers are our First Priority
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Latest review:
Extensions- 8 Dec 2021
Me and my wife are very satisfied with Prabbuilders work. What stands out with Prab builders is that they do every task as if they are doing it for their own house and with work they are meticulous and exceptional. What we started with and how our extension looks now is simply amazing and the way they explain about what will look good(Color/ the structure etc ) is commendable as we both were not sure what decision to make, but after completion we are overjoyed to see how excellent it turned out to be now. I would recommend them anytime based on their skill ,eye for detail, being punctual and the hard-work they invest into every task to make sure we are getting the final product the way we dreamt of.
Compact Building Ltd
Rating: 4.8 out of 5
Loft Conversion Company in Harefield
Compact Building LTD Renovations | Refurbishments | Plumbing – Across London From full home makeovers to small upgrades, we deliver expert results with 0% interest payment options. Make It Compact. Make It Perfect.
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Latest review:
Bathroom Fitting- 21 May 2026
Petru fitted a new shower tray. It was a complicated job due to the location of the piping. Petru was very meticulous and ensured he completed the job correctly and to a high standard.
Concorde construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Harefield
We cover all types of construction. From your small handyman jobs to building large extensions and summer houses. We specialise in all types of carpentry, bricklaying and decorating. We can take care of all of your building needs with plenty of recommendations. Look forward to hearing from you.
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Latest review:
Extensions- 5 Oct 2022
I am very pleased with the work Josh and his team did in building my rear extension. They were a friendly and hard working bunch and very respectful of my space. Josh did a great job in project managing the work and making sure things were progressing as planned. Any snagging items were dealt with promptly. I would hire them again if required and recommend them to anyone who wanted to have building work done.
Darktolight
Rating: 4.5 out of 5
Loft Conversion Company in Harefield
WELCOME to DARK 2 LIGHT CONSTRUCTION LTD. We are team of builders and electricians and all the trades . Our website is available to get more information ! Our team is made up of qualified, trusted and experienced workers . No job is too small or too big, we offer a big range of services . Call now to get a free quote !
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Latest review:
Restoration & Refurbishment- 4 Jan 2026
At the outset, Harry and his partner are good people. However, the job was not completed to a professional standard. Grout has started coming off from between the tiles leaving gaps that water can pass through, the door hinge was not properly fitted leaving a door that will not close, the radiator pipe clips were not fitted, tile trims are not flush with rest of the wall, shelves were fitted on top of old broken wood. And the worst part is that Harry did not turn up even after confirming a date to come back and fix the missing parts. I paid him extra for all the additional jobs, even though certain items from the contract were not done ( for e.g. replacing the bathtub panel ). They have multiple jobs ongoing at the same time and struggles to stick to schedule. If you get them I would advise not paying everything upfront and making sure contract is signed only after it is made sure that they would stick to schedule. I struggled to get them to commit to a date and stick to it.
Florin
Rating: 5 out of 5
Loft Conversion Company in Harefield
I’ve got over 10 years experience in roofing industry,I’m a professional person,I’m not doing tipe of work that I never done it before,I don’t leave any jobs unfinished.I have done several roofing jobs for different companies base in London.
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Latest review:
Roofing (Pitched)- 29 Nov 2022
Florin and his team did a very good job fitting a skylight and rubber roof. Communication was very good and the standard of workmanship and overall finish were excellent. I would strongly recommend him
J M HARJI CONSTRUCTION LIMITED
No reviews yet
Loft Conversion Company in Harefield
J M Harji Construction Ltd is a reliable and experienced building company specialising in high-quality residential and commercial construction. We handle everything from extensions, refurbishments, and renovations to new builds and structural work. Our skilled team takes pride in delivering excellent workmanship, clear communication, and projects completed on time and within budget. Whether you’re improving your home or starting a new project, you can count on us for professional service and outstanding results.
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RS building
Rating: 5 out of 5
Loft Conversion Company in Harefield
We’re a highly professional team with over 20 years’ experience in extensions, loft conversions, high-end renovations, new builds, and property conversions. We deliver top-quality work on time and within budget. Our rates are among the most competitive in the UK at £180 per day per man + 10% OHP. With all specialist trades under one umbrella, we can handle projects of any size smoothly—from £20k up to £2m. Happy to discuss your project further
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Latest review:
RS Building successfully delivered two full back-to-brick refurbishments and a new-build development for us in Greenwich, including demolition and construction of four new dwellings. Their level of workmanship is exceptional, and their attention to detail is second to none. As experienced property developers, we’ve worked with many contractors—but RS Building stand out for their reliability, quality, and professionalism. We have since recommended them to several colleagues, all of whom have been equally impressed. Our only regret is not finding them sooner. We look forward to working with them again on future projects.
KW Electrical Services
Rating: 5 out of 5
Loft Conversion Company in Harefield
Hi my name is Kevin and I have been an electrician since 2002. I run a small electrical business called KW Electrical. I am a Which Trusted Trader, Hertfordshire County Council Approved, Part P Registered, over 150 reviews on Checkatrade and all round nice guy. I look forward to quoting competitively on your job.
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Latest review:
Kevin did the electrical work in my extension. He fitted new plug sockets, aerial socket and sky socket, also LED ceiling lights and outdoor PIR light. Kevin was very professional, polite and reliable. He worked efficiently and was tidy. He was also very helpful and explained things clearly to me. I have recommended Kevin to a friend and I will be using him again next year.
Gotbath UK Ltd
Rating: 4.7 out of 5
Loft Conversion Company in Harefield
Gotbath UK Ltd is London based family construction company committed to deliver an exceptional service on budget and time. Whether you require an extension, loft conversion or remodelling an existing property, we provide a full service. We work together with profesional as architects, designers, engineers etc
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Latest review:
Extensions- 20 Feb 2020
Decent builders but with extremely poor communication skills. First the good points: 1. They are good at internal finishes 2. They create and use a Statement of Work (SOW) to track all costs of the project, so there were no major surprises in the project 3. They are friendly and hard workers - who arrive on time Gotbath UK Ltd used subcontractors to build us a 6 meter rear extension. Although they had an in-house architect, they did not know the law around boundaries which resulted in a conflict with our neighbours. After spending hundreds on hiring a boundary surveyor, the initial wall had to be re-built within our boundary. Gotbath did not take any responsibility for the wrong information they provided to us regarding boundaries and charged us for the rebuild. When discussing how to finish the inside of the extension, GotBath were extremely slow in ordering supplies and in general responding to us, so we took matters into our own hands and ordered materials ourselves which were removed from the SOW provided to us. At the end of the project, finishes took a long time and required constant chasing. Final gas, electrical and warranty documents took a long time to reach us and required a lot of chasing too. I have very little confidence that GotBath will honour the warranty document they have provided to us. It's a shame because I can see GotBath have a lot of potential as a builder. However, their lack of communication has really let them down.

4.3

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Harefield, are rated 4.3 out of 5 based on 6 reviews from customers like you.

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What services are offered by loft conversion companies in Harefield?

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

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 Harefield loft conversion company.

Find a loft conversion company in Harefield 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 Harefield.

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 Harefield can view your job and register their interest.

Step 2: Review and compare Harefield 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 Harefield 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 Harefield 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 Harefield

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 Harefield?

A local loft conversion company in Harefield 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 Harefield 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 Harefield 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 Harefield

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 Harefield before agreeing to start the work.

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

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