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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.

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Some of our top rated loft conversion companies in Mortlake

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  • Loft Conversion Company in Mortlake

    Qualified carpenter over 30 years experience NVQ3 ONC construction has worked in all aspects of the trade friendly and helpful

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  • Loft Conversion Company in Mortlake

    As a Construction & Consultancy Firm with over 24 years of work experience in building industry, We offer a wide range of services to our clients including: -All Types of Extensions -Loft Conversions -Flat Conversions -New Builds -Tanking and Damp-proofing -Wall and Chimney Removals -Steel Beam/Frame Installations -Structural Repair and Retrofitting -Renovation and Refurbishment -Planning Application Drawings and Submissions -Structural Calculations -Building Specifications Documents

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  • Loft Conversion Company in Mortlake

    Hi I'm John I do loft and extension conversion

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  • Loft Conversion Company in Mortlake

    Our team of highly experienced professionals offer top-notch building services to help you achieve the home of your dreams whether your looking make major structural changes, add a new extension or upgrade your homes features we’ve got you covered. At grand innovations, we believe in using only the highest quality and sustainable materials to ensure that your home is unparalleled and meets or exceeds your expectations, we pride ourselves on our attention to detail and our commitment to delivering exceptional workmanship every time. You will find no upfront, large deposits required, here at grand innovations we offer a simple payment plan structured and tailored for each individual client so you can track the progress and the budget of your project with confidence. We would love to book you in for a discovery call to discuss your current or future plans for your project.

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  • Loft Conversion Company in Mortlake

    HB Roofing Services is a reliable and professional roofing business covering Surrey and Sussex, with nearly a decade of hands-on experience in all aspects of roofing work. We specialise in pitched roofing, flat roofing, leadwork, guttering, fascias & soffits, roof repairs, and general roofing maintenance. Whether it’s a small repair or a larger roofing project, we take pride in delivering honest advice, quality workmanship, and a dependable service from start to finish. Customer satisfaction is our priority, and we aim to provide a friendly, tidy, and trustworthy service at fair prices. Free quotes are available, and we also offer emergency call-outs when needed.

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  • Loft Conversion Company in Mortlake

    MarianRenovation LTD provides professional home renovation and general building services across London. We specialise in painting and decorating, bathroom and kitchen fitting, flooring, plastering, and full property refurbishments. Our team is reliable, experienced, and focused on delivering high-quality work and customer satisfaction on every job. Clean, efficient, and always on time — we turn your ideas into reality. Contact us today for a free consultation!!

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  • Loft Conversion Company in Mortlake

    Carpentry ,timber frame,doors,kitchens,

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  • Loft Conversion Company in Mortlake

    My name is Ben I'm a fully qualified electrician, and a member of NICEIC(member number 61086000) and have been working in the industry for over 12 years since leaving school. I'm time served and have been running my own business for over 2 years now and I cover a wide range of services from; Landlord certificates (EICR) Fuse box upgrades Fault finding Replacing light fittings Lighting upgrades Security lights installed New lights installed Sonos systems installed New circuits or rewires

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  • Loft Conversion Company in Mortlake

    Zenhaus is more than just a typical building company. We can complete the design, supply and build for your home. We have an office and design studio that you can visit to plan and design your project. Our talented design team is what differentiates us from your typical high street store and other builders. Zenhaus can also supply you all your materials and also kitchens, bedrooms and bathrooms at unbeatable prices. Verified members of FMB, Loverenovate and Mumstrusted.

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  • Loft Conversion Company in Mortlake

    With over 10 years of experience in the construction industry, I am a dedicated professional who takes pride in delivering high-quality work with a focus on safety and customer satisfaction. I’m passionate about meeting new people and ensuring every client is treated fairly, as I deeply value the importance of trust and satisfaction. Inspired by my responsibility to provide for my family, I’ve built my business on the principles of integrity, quality, and reliability. Whether it’s painting, tiling, flooring, or loft conversions, I approach every project with care and a commitment to excellence.

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  • Loft Conversion Company in Mortlake

    "Welcome to GN Builder London Ltd, your trusted partner in construction excellence throughout the vibrant city of London. With a commitment to superior craftsmanship, innovative solutions, and client satisfaction, GN Builder London Ltd stands as a premier construction company dedicated to transforming visions into reality. From bespoke residential projects to commercial developments, our experienced team delivers unparalleled expertise, attention to detail, and professionalism in every endeavor.

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  • Loft Conversion Company in Mortlake

    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 Mortlake

    We are a reliable roofing company aiming to create great work for our customers.

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  • Loft Conversion Company in Mortlake

    Loftnix Developments is a trusted, London-based construction company specializing in high-quality loft conversions, home extensions, and full property refurbishments. With over a decade of hands-on experience, we take pride in turning ordinary spaces into extraordinary living environments. From concept to completion, we manage every detail of your project with precision, professionalism, and a personal touch. Our team is committed to delivering work that is not only structurally sound but beautifully finished on time and within budget. Whether you're looking to create a new bedroom in your loft, expand your kitchen, or completely renovate your home, Loftnix Developments brings the craftsmanship, care, and expertise to bring your vision to life. We serve clients across North and Greater London, and our reputation is built on word-of-mouth, repeat business, and high client satisfaction. Get in touch today for a free, no-obligation quote and discover how we can help you maximize the potential of your home.

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  • Loft Conversion Company in Mortlake

    City Lofts of London – High Quality Loft Conversions Add Real Value to Your Home with a Bespoke Loft Conversion Expert Loft and Attic Conversion Services from the Houzz 2015 Customer Service Award Winners

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  • Loft Conversion Company in Mortlake

    Kitchen, bathroom, renovation, flooring, tile, plumbing, fencing, doors, windows, insulation,

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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.

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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.

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