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Loft Conversion Companies in Harlesden

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Some of our top rated loft conversion companies in Harlesden

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  • National Construction and Maintenance Ltd is a trusted and experienced construction company with over 25 years of industry expertise delivering high-quality building, renovation, and maintenance services across residential and commercial projects. We pride ourselves on providing reliable workmanship, professional service, and attention to detail on every project we undertake. From extensions and refurbishments to general maintenance and complete property improvements, our skilled team is committed to delivering work to the highest standards, on time and within budget. At National Construction and Maintenance Ltd, customer satisfaction is at the heart of everything we do. Our reputation has been built on honesty, quality craftsmanship, and long-lasting relationships with our clients.

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  • Loft Conversion Company in Harlesden

    We are currently doing projects like extensions, loft conversions and refurbishments We have 20 years of working experience. We offer a multitude of services from the planning permission to the completion of the project.

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  • Loft Conversion Company in Harlesden

    At Safeway Build Ltd, we pride ourselves on delivering exceptional craftsmanship and reliable service in every project we undertake. Led by Florin, a highly trained professional with over 20 years of experience in the construction industry and a proud member of the Federation of Master Builders (FMB) since 2014, our company is built on trust, quality, and attention to detail. Working alongside trusted electricians and plumbers, we offer a complete service that ensures every aspect of your project is handled with care and expertise. Much of our success has come from referrals and repeat clients, a testament to the satisfaction and confidence our customers have in our work. At Safeway Build Ltd, we don’t just build — we build lasting relationships, turning your vision into reality with professionalism, transparency, and dedication. Whether you are looking for loft conversions, extensions or a refurb, all our services are carried out carefully, efficiently and to an exceptionally high standard of quality. We are happy to undertake any domestic work. At Safeway Build Ltd, no job is too big or too small.

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  • Loft Conversion Company in Harlesden

    Jeffery and Wilkes are an award-winning, leading construction company in London.Jeffery and Wilkes have numerous positive reviews & testimonials from their previous clients. As a family run, boutique business working on London's finest properties & based in Kensington, we know how important quality is and creating beautiful, elegant spaces in our clients home.

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  • Loft Conversion Company in Harlesden

    Hi , as sole trader extension builder and loft conversion specialist, I have been in this industry for 7 years. I operate primarily in North part of London and surrounding areas, providing quality construction services to homeowners. My skills include structural alterations, project management, and a strong attention to detail, allowing me to handle everything from following structural drawings to the final touches. I typically undertake loft conversions, extensions, renovations, and general building work, all tailored to meet the unique needs of each homeowner. If you have any questions or would like to discuss a project, feel free to reach out!

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  • Loft Conversion Company in Harlesden

    Perrin Homes is a Kiwi owned and operated building company. We aim to bring the Kiwi know how and can do attitude to all the building work we complete in London and surrounding areas. Our area of expertise covers lofts, extensions and full renovations.

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  • Loft Conversion Company in Harlesden

    Dear customer We doing everything with very proficiency and easy way where we can explain everything to clients very well We managed our all work and sites comples on time and with in our client budget Achieving 100 % of success rate Best wishes for all client

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  • Loft Conversion Company in Harlesden

    Based in London, at Project Rams, we deliver comprehensive building and construction services, covering everything from high-end new builds and extensions to luxury interiors and bespoke finishes. We don’t just get the job done — we build with precision, style, and care. Every project is handled with a keen eye for detail, clean workmanship, and a calm, professional approach. What we offer: • Full building services from start to finish • Stylish, high-spec finishes • A respectful, tidy, and fully insured team • Clear communication and no hidden surprises We understand that inviting builders into your home is a big decision. That’s why we’re committed to making the process smooth, transparent, and stress-free. Most of our work comes through referrals and repeat clients, which reflects our dedication to quality and trust. We treat every home as if it were our own — with care, respect, and attention to detail. If you’re looking for a team that takes pride in delivering high-quality craftsmanship with finesse, shortlist us today and let’s have a chat.

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  • Loft Conversion Company in Harlesden

    We offer a full design and build service, designing your scheme from initial concept to a fully costed design. Our in-house architectural design team tailor the design to suit your style and budget, and have the experience and knowledge to successfully navigate the pitfalls of individual boroughs’ particular planning departments. We specialise in new builds, Loft conversions, extensions and full home refurbishments.

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  • Loft Conversion Company in Harlesden

    I specialize in high-quality **house refurbishments**, **extensions**, and **complete bathroom installations**, transforming homes with tailored solutions. From modernizing outdated spaces to creating seamless extensions and luxurious bathrooms, I handle every aspect from design to completion. My work focuses on craftsmanship, clear communication, and delivering durable, stylish results that enhance your home's value and functionality.

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  • Loft Conversion Company in Harlesden

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  • Loft Conversion Company in Harlesden

    professional approach to various types of work. qualitatively and reliably.

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  • Loft Conversion Company in Harlesden

    Skimming plaster, K rendering, Sand plaster, tile work , garden work, driveway work, and any type house renovation and building contract

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  • Loft Conversion Company in Harlesden

    Hi __, Are you planning a construction project or looking for reliable property maintenance? At OPTICON CONSTRUCTION & MAINTENANCE, we bring over 25 years of industry experience and a strong reputation for delivering high-quality construction and property solutions. We provide professional building and maintenance services for both residential and commercial properties. Our Services Include: 🏗️ Building Construction – Residential & Commercial Projects 🏠 Renovation & Refurbishment – Upgrade and modernize your property 🔧 Plumbing Installation & Repair – Fast and reliable plumbing solutions 🛠️ General Property Maintenance – Keeping your property in perfect condition ⚙️ Preventative & Reactive Maintenance – Prevent problems before they start. Our experienced team is committed to delivering high-quality workmanship, reliable service, and complete customer satisfaction on every project. If you’re looking for a trusted partner for your next project, we’re here to help. We’d love the opportunity to discuss your current or upcoming projects and explore how we can bring your vision to life with precision and professionalism. Kind regards, Joao Dias

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  • Loft Conversion Company in Harlesden

    ABT Builders LTD is a construction company operating in Lodon and surrounding areas , specialising and providing high quality in Loft conversion, extension, full refurbishment, bathrooms, painting and decorating, etc.

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  • Loft Conversion Company in Harlesden

    Welcome to Steps Builders Ltd, your premier destination for expert building solutions. Specializing in loft conversions, house extensions, refurbishments, renovations, and garden fence installations, we pride ourselves on delivering high-quality craftsmanship At Steps Builders, we understand that every project is unique, which is why we tailor our services to meet your specific needs and budget. Contact us today to schedule a consultation and let us bring your vision to life

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4.2

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Harlesden, are rated 4.2 out of 5 based on 9 reviews from customers like you.

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What services are offered by loft conversion companies in Harlesden?

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

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 Harlesden loft conversion company.

Find a loft conversion company in Harlesden 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 Harlesden.

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 Harlesden can view your job and register their interest.

Step 2: Review and compare Harlesden 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 Harlesden 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 Harlesden 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 Harlesden

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 Harlesden?

A local loft conversion company in Harlesden 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 Harlesden 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 Harlesden 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 Harlesden

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 Harlesden before agreeing to start the work.

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

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

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