Loft Conversion Companies in Winchmore Hill

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.5 (8 reviews)

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Some of our top rated loft conversion companies in Winchmore Hill

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EMI GENERAL CONSTRUCTION LTD
Rating: 4.7 out of 5
Loft Conversion Company in Winchmore Hill
We are a qualified and professional team with long experience in this Industry, offering a wide range of quality services. We have a great satisfaction to see people happy and satisfied with our final results. That makes us fill we are helpful, indeed. We are transparent with our customers helping them to make best decisions. We explain everything before and respect final agreement, after! Kindness and respect makes the world better for you and for us. Hope to hear from you soon!
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Latest review:
Restoration & Refurbishment- 21 Apr 2023
Marius accomplished a difficult work for my property. We had a heavy leak difficult to identify which required a couple of investigations. He finally gave me the price figure and estimated time to do the work and he managed to do it in a successful way all the way through. He changed all electric work under the stairs, completely replaced new joists, plywood and engineering floor on top. He changed the damaged staircase, solve the leak problem without causing big damage. Thank you for your business. Will definitely hire again for my loft conversion. Would highly recommend!!! Thank you for your business!
D Alexa Ltd.
Rating: 5 out of 5
Loft Conversion Company in Winchmore Hill
I'm a self-employed builder with more than 14 years experience. I really enjoy my job as my work changes the whole view of my clients property. I always make sure my jobs are finish to a high standard as my clients hire me for a service & I believe they should always get the best
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Latest review:
Restoration & Refurbishment- 13 Aug 2019
David and his team were excellent. They are always on time and very professional. They always cleared up at the end of the day thereby leaving very little dust or dirt around the house. No query or issue was ever insurmountable; the answer was always "no problem", which was a joy to hear when having such a large project to do. Each different team i.e. electrician, plumber, arrived exactly on schedule so there were never any delays. The end result was amazing. I highly recommend David and his team.
P O'Brien Builders London LTD
No reviews yet
Loft Conversion Company in Winchmore Hill
P O’Brien Builders is a trusted, family-run building company with decades of experience delivering high-quality construction services across London. We specialise in home renovations, extensions, loft conversions, and new builds, offering a reliable and professional service from start to finish. Our reputation is built on quality workmanship, attention to detail, and clear communication throughout every project. Whether it’s a small upgrade or a full renovation, we approach every job with the same level of care and commitment, ensuring results that are built to last. As a family business, we take pride in what we do. With the next generation now involved, we combine traditional values with a modern approach to building, giving our clients confidence in both the process and the final result.
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CM Building LTD
Rating: 5 out of 5
Loft Conversion Company in Winchmore Hill
At CM Loft Conversions, we specialise in luxury loft conversions, home extensions, and full refurbishments for both residential and commercial properties across London. Our dedicated team is renowned for transforming spaces with unparalleled craftsmanship and meticulous attention to detail. Whether it’s a high-end home, a modern office, or a commercial property, we deliver projects that elevate both form and function. By seamlessly blending design innovation with practical solutions, we ensure every project not only enhances the aesthetic appeal of a space but also maximises its value and usability. At CM Loft Conversions, we are passionate about creating bespoke spaces that reflect the unique needs of our clients. From concept to completion, we focus on the fine details and provide a smooth, stress-free experience. Whether you’re looking to transform your home, expand your business premises, or refurbish a commercial unit, our team is committed to delivering results that exceed expectations.
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Latest review:
I met Charlie and his team from CM Builders Ltd when they were completing a loft extension and ground floor extension for one of my neighbours. Quotation and budget I was given an estimate subject to drawings as I was on a strict budget that I had to keep to for the build. Charlie was able to help me keep to the budget, both at the final agreed plan and during the build. The project was complex in that whilst it was a loft extension, all of the house was rebuilt. The only thing kept was the external walls and first floor rafters. Whilst the footprint of the first floor was not being changed I wanted to bring it up to current building standards with extra insulation. All of the plumbing and electrics were also replaced including a new boiler. The overall build has come in on budget, save for agreed enhancements that I did not think of at the planning stage and or building regulations such as double ceiling fire plaster boards. There were also items such as the original stairs that I wanted to keep, but Charlie was able to increase the height space in the kitchen making the worktop much more usable for tall people for a larger part of the kitchen. These were suggested to me as potential options as part of the build. Stage payments The stage payments have all been sensible throughout the build and linked to the ongoing work schedule. I have not therefore had any concerns in this regard. Quality of work This was a very complicated build as unlike the ground floor the first and new second floor are “L” shaped. The new 2nd floor included an en-suite and 2 bedrooms. Overall the house has been increased from 2 bedrooms 1 bathroom, to four doubles and 2 bathrooms. The quality of work is excellent and Charlie project manages his team to ensure that they all deliver to a high standard- if it is not done correctlt they do it again, with Charlie spotting any issues. Timeline of build This has generally gone to plan very well. As with any build you have to be realistic as things will happen outside of anyone’s control. When issues have arisen Charlie manages them to a conclusion. Also be realistic if you are having to manage to a tight budget. I had to plan for various stage receipts of cash before I could order the kitchen and bathroom items - make sure you understand how this impacts the build and availability of the work force, recognising that CM Builders have to book kitchen fitters and plumbers. CM Builders are also very helpful in that they have sorted out issues with the brick work of my freestanding garage (nothing to do with the build) and also a neighbour’s wall that could have been dangerous to the public, should it have failed. Conclusion The whole family are very pleased with the outcome and we now have the equivalent of a brand new house that has been built to a very high standard. This has definitely been worth doing both from a valuation perspective and quality of life perspective. I would not hesitate to instruct Charlie and his team again.
London Home Developments
No reviews yet
Loft Conversion Company in Winchmore Hill
Trade worker based in North and East London. Can do plastering, loft and kitchen conversions, full house renovations, guttering, facia, wiring, laminated flooring, doors, bathroom tiling, cladding wall and ceiling and many more
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Construction
Rating: 4.2 out of 5
Loft Conversion Company in Winchmore Hill
Produce materials that adhere to architectural specifications. - Install floorboards, skirting boards, window frames, parquet flooring, doors, door frames, staircases, and built-in furniture. - Includes fixtures such as door handles and locks, cabinet handles, stair railings, and additional fittings in the design and execution. - Constructs temporary housing and support systems for concrete setting (shuttering). - Installs fire doors and implements fire stopping measures. - Installs metal beams. - Installs floor joists. - Works on roofing structures, roof tiles, and flat roofs. - Creates Velux openings if needed. - Completes loft conversions (first and second fix). - Performs house extensions (first and second fix, complete). - Acts as a medium bricklayer. - Constructs timber partitions, stud walls (first and second fix). - Installs plasterboard and completes dry lining. - Assembles kitchen units (completed). - Performs bathroom tiling and installs second fix accessories (tools required). - Installs gutters and rain channels. - Completes paving and decking.
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Latest review:
Carpentry- 4 Apr 2026
Dragos was punctual, polite and extremely efficient. The work was completed to a high standard with care and professionalism. I would happily recommend him.
MAT-BUILDING SERVICES LTD
No reviews yet
Loft Conversion Company in Winchmore Hill
Professional and reliable service with over 10years experience , all general building works , working inside and outside of London.
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Restora Developments LTD
Rating: 5 out of 5
Loft Conversion Company in Winchmore Hill
Hi! Here at Restora Developments we pride ourselves in having a diverse range of skills. Our bread and butter is new build homes and large developments, however we have formed a sub division aimed at end clients and home owners for smaller taks. With all in house; - carpenters - roofers - plumbers - electricians - brick layers - landscapers Etc. We take on all work from simple bathroom refurbishments to building your dream property from the ground up!
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Latest review:
Groundwork & Foundations- 18 Feb 2022
they did for me a good job and very high standard and price wise
Rise Group Holdings
No reviews yet
Loft Conversion Company in Winchmore Hill
**Profile:** Hi there, I’m a 43-year-old Project Manager with extensive experience in construction and a background as a trained carpenter. Over the years, I’ve had the privilege of working on a variety of projects, from loft conversions and extensions to full refurbishments. My approach is grounded in honesty, hard work, and delivering on promises. I believe in providing clear and inclusive quotes that I can confidently stand by, ensuring transparency and peace of mind throughout the process. Myself and my team are professional, friendly, and dedicated to getting the job done right, every time. Whether you’re planning a small renovation or a large-scale transformation, I am here to help bring your vision to life with skill, reliability, and attention to detail. Feel free to get in touch if you’re looking for someone who takes pride in their work and is committed to delivering exceptional results!
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Vk contractors limited
No reviews yet
Loft Conversion Company in Winchmore Hill
A dynamic and motivated team of professional builders in London, with over 25 years of experience. Our company undertake the study and implementation of a wide range of technical projects. We have an extensive experience on Lofts, Flats & Houses, Remodeling, Restoring and Extensions, Corporate Buildings & Retail Business Venues.
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City Seven Group Ltd
Rating: 4 out of 5
Loft Conversion Company in Winchmore Hill
Welcome to City Seven Group – Your Trusted Partner in Construction and Home Renovations. At City Seven Group, we believe that your home is more than just a structure; it’s a reflection of your lifestyle and personality. With over 14 years experience, our dedicated team is committed to transforming your vision into reality. Whether you're dreaming of a modern kitchen, a cosy living room, an additional living space or anything down to experienced wallpaper installation, we have the expertise to bring your ideas to life. Why Choose Us? Our skilled professionals bring a wealth of knowledge and hands-on experience to every project to ensure that your renovation meets the highest standards. We understand that every client has unique needs and preferences. From the initial consultation to project completion, we work closely with you to tailor our services to fit your specific requirements and budget. We take pride in attention to detail and commitment to quality. Our goal is to deliver results that not only meet your expectations but exceed them, ensuring lasting craftsmanship in your home. Whether it's a small renovation or a large-scale project, we offer a range of services including design, remodelling, project management and more. Contact us today to discuss your next project.
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Latest review:
Painting & Decorating- 22 Apr 2025
Workmanship is excellent, city seven group are professional, polite, kept me updated, gave excellent advice and I would definitely recommend them. The job took a fair bit longer as there were things that came up along the way but overall I am really pleased with the work. I will also be hiring them again for another job 😊 They have turned my living room into a lovely relaxing place to be which is so important for my kids and me, I can’t thank Jonah and his team enough!
Electrical
No reviews yet
Loft Conversion Company in Winchmore Hill
Electrical work
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Done By Tom Ltd
Rating: 5 out of 5
Loft Conversion Company in Winchmore Hill
Welcome to Done by Tom – we offer a completely bespoke design and build service for the London private sector. If you’re looking for clever, stunning and energy-efficient construction as well as interior design, we are it. At Done by Tom, we’ve come up with a unique success formula when it comes to memorable design and construction: combining the interior design, architecture and construction process into one seamless dream to deliver according to our clients vision.
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Latest review:
Loft Conversion- 31 Mar 2019
Tomas and his team did a great job. Still waiting for some equipment to be removed.
Stone Bros Construction Ltd
No reviews yet
Loft Conversion Company in Winchmore Hill
In brief, we specialise in - Laminate/ Vinyl flooring - Tiling - Interior and Exterior painting - Plastering - New stud wall fixing - Electrical installation - Gas and plumbing works
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Joshan builders ltd.
No reviews yet
Loft Conversion Company in Winchmore Hill
Hi, I’m jas from joshan builders. With over 15 years in the trade, I specialise in high-quality loft conversions / extensions/ new builds. I take pride in clear communication, reliable timelines, and attention to detail on every project. 📍 Where I work: tottenham, I cover surrounding areas up to 20 miles 🔧 Special skills: Structural work, bespoke carpentry, accurate quoting, and managing full renovations. ✅ Why hire me: I’m committed to getting the job done right — first time, on time. Let’s talk about your project — I’d love to help bring it to life!
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Eugen
Rating: 4.8 out of 5
Loft Conversion Company in Winchmore Hill
My ins.ta.gram : London Starling Prodecor London Starling ProDecor – Bauwerk Approved Limewash Specialist London Starling ProDecor is a specialist decorative finishing company based in London, officially recognised by Bauwerk Colour as an approved limewash applicator in the United Kingdom. With more than 10 years of experience in premium painting and decorative finishes, we deliver authentic limewash surfaces that combine craftsmanship, texture, and timeless elegance. Our expertise includes colour consultation, sample applications, surface preparation, and the professional application of Bauwerk limewash finishes for residential and commercial interiors. We work closely with homeowners, interior designers, architects, and developers to achieve unique, natural-looking spaces with exceptional attention to detail. Serving London and surrounding areas, we are committed to delivering high-quality workmanship, personalised service, and outstanding results on every project. Best regards, Painter and Decorator Eugen
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Latest review:
Painting & Decorating- 23 Feb 2026
Polite and thorough. Limewashed kitchen/living area. However no caulking, no prepping of paintwork, left the job unfinished - although he said it was finished. Had to get another painter to go over the work that he left.

4.5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Winchmore Hill, are rated 4.5 out of 5 based on 8 reviews from customers like you.

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What services are offered by loft conversion companies in Winchmore Hill?

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

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 Winchmore Hill loft conversion company.

Find a loft conversion company in Winchmore Hill 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 Winchmore Hill.

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 Winchmore Hill can view your job and register their interest.

Step 2: Review and compare Winchmore Hill 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 Winchmore Hill 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 Winchmore Hill 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 Winchmore Hill

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 Winchmore Hill?

A local loft conversion company in Winchmore Hill 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 Winchmore Hill 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 Winchmore Hill 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 Winchmore Hill

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 Winchmore Hill before agreeing to start the work.

Do I need planning permission for a loft conversion in Winchmore Hill?

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