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Loft conversion companies in Marylebone, West London

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Some of our top rated loft conversion companies in Marylebone, West London

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  • Loft Conversion Company in Marylebone, West London

    I am a qualified bricklaying with NVQ L2 and have been laying bricks for around 30 years . I have worked on many big construction cites in London as well as working for myself as a soul trader I have extensive experience building new build houses,flats and commercial developments as well as refurbs

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  • Loft Conversion Company in Marylebone, West London

    PRIMEBUILD&DESIGN LTD is a professional building company focused on delivering high-quality home extensions, renovations and general building work. We take pride in reliable workmanship, clear communication and keeping every project organised from start to finish. We work closely with our customers to understand exactly what they want and provide practical solutions throughout the project. We aim to keep sites clean and tidy, respect our customers’ homes and complete work to a high standard. Whether you are planning an extension, structural alterations, refurbishment or other building improvements, PRIMEBUILD&DESIGN LTD is committed to providing a professional and dependable service. We are happy to discuss your project, answer questions and provide a clear quotation before work begins.

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  • Loft Conversion Company in Marylebone, West London

    We offer professional services

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  • Loft Conversion Company in Marylebone, West London

    Luxe Lofts are a family run company, offering a highly personalised service. Not only is it important for us to get it right, we ensure your project runs smoothly from start to finish and most importantly, on time. From initial designs to the finished build, Luxe Lofts are with you every step of the way. Our professional service of expert design, high quality craftsmanship, and attentive customer care ensures that your loft conversion is created to achieve its greatest potential; installed with both efficiency and minimal inconvenience. Luxe Lofts only use qualified, experienced craftsmen and tradesmen. All our projects include plans, submission of plans to local authorities, building, plumbing and all electrical work. All works are fully certificated and carry a 10 year structural guarantee* for total peace of mind.

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  • Loft Conversion Company in Marylebone, West London

    Been in the building industry for over 15 years working on a self employed basis, for the past 3 years I am running my own company having different trades subcontracting for me, we mainly deal with general building projects as (house extensions, loft conversions, general refurbishments and house alterations we have a long relation with Waltham Forest Council and Barnet Council as we had a fair amount of jobs in these areas

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  • Loft Conversion Company in Marylebone, West London

    Remdraly Design Ltd — 25+ years of carpentry & joinery expertise, trading since 2015. We deliver kitchens, lofts, flooring, extensions and full refurbishments across East London, for domestic and commercial clients. Reliable, professional craftsmanship — done right, every time.

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  • Loft Conversion Company in Marylebone, West London

    Hi I’m a carpenter with other 10 years experience, both domestic and commercial. I have extensive knowledge of the trade and an eye for detail. Feel free to contact me with any jobs. Samuel

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  • Loft Conversion Company in Marylebone, West London

    KB Construct Ltd is a London-based construction company specialising in extensions, refurbishment and general building work. We undertake both residential and commercial projects, from smaller improvement works through to complete property renovations and extensions We pride ourselves on high-quality workmanship, reliability, clear communication and keeping our projects organised from start to finish. Our team covers structural work, brickwork, roofing, plastering, carpentry, flooring, decorating, kitchens, bathrooms and more. We work closely with our customers throughout every project, providing clear quotations and aiming to complete all work to a professional standard, on time and with minimum disruption. No job is treated as “just another job”-customer satisfaction and building a strong long-term reputation are our priorities.

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  • Loft Conversion Company in Marylebone, West London

    Levismar Formwork & Groundworks Ltd is an experienced construction contractor with over 25 years of industry experience. We work with homeowners, developers, builders and main contractors on both private and commercial projects. Our services include complete groundworks, excavation, foundations, underpinning, basements, reinforced concrete, formwork, steel fixing, retaining walls, drainage, demolition, structural works, new-build houses, extensions, brickwork, blockwork, roofing, driveways, paving, hard landscaping, external works and site preparation. We can provide complete construction packages or individual specialist services, depending on the requirements of each project. Our team has the workforce, experience and construction plant to support projects ranging from smaller groundwork, driveway and retaining-wall works to major basements, reinforced-concrete structures and new-build developments. We also have excavators from 3 to 22 tonnes, dumpers and HIAB/plant transport, with operated plant available where required. Visit our website to view our services and previous projects. We welcome genuine enquiries from clients looking for reliable, capable and experienced construction support.

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  • Loft Conversion Company in Marylebone, West London

    We are experienced builders providing a range of property improvement and maintenance services. Our work includes roofing, refurbishment, interior and exterior painting, French polishing, and general property repairs. We also specialise in kitchen and bathroom fitting, ensuring all work is completed with care and attention to detail. We focus on delivering reliable workmanship, using quality materials and practical solutions to achieve long-lasting results. Whether it is a small repair, renovation, or a larger refurbishment project, we aim to complete every job efficiently and to a high professional standard. Customer satisfaction, clear communication, and dependable service are at the centre of the work we carry out.

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  • Loft Conversion Company in Marylebone, West London

    I am a builder with over 10 years of experience in the construction industry, specialising in loft conversions, house extensions and carpentry. Together with my skilled team, we deliver projects across London with a focus on quality, reliability and completing on time. We have successfully completed lofts, extensions and full refurbishments, helping homeowners transform their properties. Based in Greenford, we cover Greater London and surrounding areas. If you are looking for a reliable and experienced builder for both large and small projects, I would be happy to discuss your plans.

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  • Loft Conversion Company in Marylebone, West London

    Our business is to make your next home project easier, whether its getting rid of your old kitchen for a newer look, or building an extension to have more space in your home. we are here for all home modifications and improvements. We specialize in garden rooms/summer houses, extensions, loft conversions, kitchens and remodeling. We are a family run company with a knowledge of construction that has been passed down through the generations.

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  • Loft Conversion Company in Marylebone, West London

    reliable and professional work with 10 years of experience

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  • Loft Conversion Company in Marylebone, West London

    With over 20 years of experience in the building industry, HYS Builders Limited has the expertise to handle any project. Whether it's a small renovation or a new construction project, we have the skills and knowledge to get the job done right. From Loft conversions, Kitchen, extensions, Bathroom renovations, Refurbishing , New builds and many other different projects in order to get you your dream home. We have connections with many different tradesmen, ensuring the best prices, so you can choose your designs and we make the links in order for you to get the perfect price for your perfect home.

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4.6

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Marylebone, West London, 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 Marylebone, West London?

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

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 Marylebone, West London loft conversion company.

Find a loft conversion company in Marylebone, West London 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 Marylebone, West London.

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 Marylebone, West London can view your job and register their interest.

Step 2: Review and compare Marylebone, West London 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 Marylebone, West London 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 Marylebone, West London 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 Marylebone, West London

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 Marylebone, West London?

A local loft conversion company in Marylebone, West London 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 Marylebone, West London 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 Marylebone, West London 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 Marylebone, West London

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 Marylebone, West London before agreeing to start the work.

Do I need planning permission for a loft conversion in Marylebone, West London?

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

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