Describe your job with details to view a tailored list of tradespeople.
Post your job

Loft Conversion Companies in Mortlake

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

How it works

Post your job for free

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

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

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 Mortlake

1684 Results

Sort by:

  • Loft Conversion Company in Mortlake

    A professional builder having more than 10 years experience and specialty in loft conversion and full renovation of homes and commercial premises. Company are vat registered and have liability insurance Use our services for peace of mind

    Get in touch
  • Loft Conversion Company in Mortlake

    Loft,extension,refurbishment,brickwork,new build,etc

    Get in touch
  • Loft Conversion Company in Mortlake

    At MB Loft Conversions LTD we Specialise in Loft Conversions & Bespoke Builds. We are Experienced and fully insured Tradesmen that focus on customer satisfaction whilst taking the upmost pride in our work! Check out our photos of some completed projects below.

    Get in touch
  • Loft Conversion Company in Mortlake

    Welcome to Zorkun. We guarantee quality, professionalism and integrity. We are new to MyBuilder.com and you should chose us for your project because: 1. We have been in the construction industry for three generations and possess the experience and quality that comes with it. 2. Our team includes the same skilled and trustworthy members for the last 15 years. 3. We will assist you every step of the way which includes value engineering to save you money. Thank You

    Get in touch
  • Loft Conversion Company in Mortlake

    Loft conversion, groundwork, extensions, joinery, roofing and more with an extensive history of works previously done and years of experience

    Get in touch
  • Loft Conversion Company in Mortlake

    Top Notch Builders (Surrey) Ltd are high quality building firm with a strong reputation in the Leatherhead and Surrey area with a number of prestigious projects completed to date. Specialising in new builds, extensions and conversions, Top Notch Builders have the skills, expertise, experience and resources to project manage, contract and /or build your project to an exacting standard.

    Get in touch
  • Loft Conversion Company in Mortlake

    Welcome to Indus Valley Builders Ltd. At Indus Valley Builders Ltd, we bring your vision to life with expert craftsmanship and end-to-end construction solutions. Based in Slough, England, we are a trusted construction company with over 5 years of experience and offering a comprehensive range of residential and commercial building services tailored to meet your needs. With a commitment to quality, reliability, and customer satisfaction, we specialize in: • Extensions • Painting • Loft Conversions • Garage Conversions • New Builds • Painting • Decorating • Plumbing • Kitchen & Bathroom Installations • Tiling • Carpentry • Landscaping • Roofing Services • Full Renovations & General Building Work Whether you're expanding your living space, transforming an unused area, or starting a project from the ground up, Indus Valley Builders delivers excellence at every stage — from planning and design to construction and finishing touches. Our team of skilled professionals takes pride in offering clear communication, on-time delivery, and impeccable results, ensuring every project is completed to the highest standards. Build with Confidence. Build with Indus Valley.

    Get in touch
  • Loft Conversion Company in Mortlake

    NA Builders LTD is a reliable and professional building company providing high-quality construction and renovation services. We take pride in delivering excellent workmanship, clear communication, and projects completed on time and within budget. With strong experience in the building trade, we specialise in a wide range of services including extensions, renovations, structural work, brickwork, plastering, and general building projects. No job is too big or too small – we give every project the same level of care and attention to detail. Customer satisfaction is at the heart of what we do. We work closely with our clients to understand their needs, offer honest advice, and ensure the finished result meets their expectations. Our team is hardworking, respectful, and committed to keeping sites clean and safe at all times. If you are looking for a trustworthy builder who values quality, reliability, and professionalism, NA Builders LTD is here to help.

    Get in touch
  • Loft Conversion Company in Mortlake

    I have am a highly skilled and experienced builder that has a great knowledge and expertise in designing and planning. My building experience means that I have a great understanding of what works when it comes to house design and can foresee problems that designers can't always predict. I can offer detailed CAD drawings to submit for planning applications for any type of extension, conversions and alterations.

    Get in touch
  • Loft Conversion Company in Mortlake

    We are construction company who do all types of building work, with qualified people in each field we concentrate on customer satisfaction.

    Get in touch
  • Loft Conversion Company in Mortlake

    Hello and welcome to A and G construction We specialise in loft conversions and extensions. Roofing, and rendering . With over 10 years experience in the trade we are very well experienced,and have plenty of skills and expertise within the loft extension trade.

    Get in touch
  • Loft Conversion Company in Mortlake

    I am a professional architectural designer with experience in both new build work and refurbishments, extensions & alterations. With 15 years of industry experience with leading agencies and brands I can assist in the following: - Drafting Client Brief - Feasibility studies - Planning Applications and DAS reports - High detail & technical 3D modelling - High level Visuals/Animations and precise texture mapping - Managing design team and project workflow - Design Management - Client, consultant and contractor coordination - Selection and procurement of contractors - Site inspection - Contract Administration

    Get in touch
  • Loft Conversion Company in Mortlake

    Hello, This is JSB Project ltd. We are based in West London. We do Loft extensions, Garages, All kind of Extensions, Renovations, Kitchen bedorrms ans so more. We have projects around London. Free qoute. Please contact us for any inquiries. Thanks. Kind regards

    Get in touch
  • Loft Conversion Company in Mortlake

    Welcome to JSRM Construction LTD! We are dedicated to delivering top-quality building services tailored to meet your needs. With a team of skilled professionals and years of experience in the construction industry, we specialize in residential and commercial projects, ensuring that every detail is executed to perfection. Our commitment to safety, integrity, and client satisfaction sets us apart. Whether you’re planning a new build, a renovation, or an extension, we’re here to bring your vision to life. Let’s build something great together!

    Get in touch
  • Loft Conversion Company in Mortlake

    JRS Builders Company is a premier construction company that has been providing top-quality construction services for over a decade. With a team of highly skilled and experienced professionals, we are dedicated to delivering exceptional craftsmanship and outstanding customer service to our clients. Our commitment to excellence has earned us a reputation as a trusted and reliable partner in the construction industry. Whether it's a new home construction, renovation, loft coversion, extension, driveway & patio, bathroom & kitchen refurbishment or remodeling project, our team has the expertise and resources to bring your vision to life. Contact us today to learn more about our services and how we can help you with your next project.

    Get in touch

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Mortlake, are rated 4.4 out of 5 based on 11 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 Mortlake?

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

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 Mortlake loft conversion company.

Find a loft conversion company in Mortlake 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 Mortlake.

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 Mortlake can view your job and register their interest.

Step 2: Review and compare Mortlake 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 Mortlake 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 Mortlake 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 Mortlake

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 Mortlake?

A local loft conversion company in Mortlake 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 Mortlake 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 Mortlake 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 Mortlake

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 Mortlake before agreeing to start the work.

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

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

Other tradespeople in Mortlake

Cities