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

Loft Conversion Companies in St Johns Wood

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

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 St Johns Wood

1866 Results

Sort by:

  • Loft Conversion Company in St Johns Wood

    We are a construction company with a proven track record of delivering high-quality building services. Over the years, we’ve built a reputation for excellence through our commitment to craftsmanship, attention to detail, and a strong focus on customer satisfaction. Our expertise spans across a wide range of services, including new builds, office fit-outs, full property renovations, loft conversions, extensions, and external works, as well as property maintenance and management. Whether it’s creating a bespoke family home from the ground up or breathing new life into an existing property (Residential or commercial), we bring the same level of dedication and care to every project we undertake. At the heart of our business is a simple but powerful ethos: “Do it once, do it right.” This principle guides everything we do — from the quality of materials we use to the professionalism of our team and the clarity of communication with our clients. Why Choose Us? 1. Professionalism: We approach every project with integrity, transparency, and a clear sense of responsibility. 2. Quality-Driven: We never cut corners and always strive for excellence in workmanship and finish. 3. Agile: We are flexible and adaptable, able to respond quickly to challenges and client needs. 4. Trustworthy: Our clients trust us to deliver on our promises, and we take that trust seriously. 5. Clear Communication: We believe clear, open, and honest communication is key to successful outcomes and lasting relationships. Our success is reflected in the positive testimonials and long-term relationships we’ve built with our clients, many of whom return to us for future projects or refer us to others with confidence. If you’re looking for a construction partner in London who combines experience, reliability, and a commitment to quality, we’d be delighted to discuss how we can help bring your vision to life

    Get in touch
  • Loft Conversion Company in St Johns Wood

    I am a time served city and guilds carpenter & joiner with over 25 years experience. I have worked in all aspects of construction over the years from major commercial sites to smaller private work. Experienced in Working with and a good understanding of other trades.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    With over 35 years of construction experience and a management team consisting of engineers, architects, and master builders we have all your construction needs covered. Dolmen is committed to providing high-end quality builds at unmatchable value. Our consistency in providing professionally managed exceptionally outstanding projects has made us one of the leading bespoke construction companies in the Uk. Get in touch today and find out how we can build your future today.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    All building maintenace Painting All sort of Carpentry Building Gardening

    Get in touch
  • Loft Conversion Company in St Johns Wood

    I am working in construction from 15 years . I have a good and experience team. I recently renovated the 3 bedroom house with a 6 meter back extension. I mostly do loft conversion, back extension, renovate the old house , back garage etc.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Architectural services Structural Engineering Services

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Hi my name is Caush , I am 35 years old . I live in London since 2011 and I have been working in construction for almost 15 years. I can do roofing, extension, carpentry, first fix carpenters. I live in North London.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Hi .i am very hardworking and i love the job what i am doing .i am polite person with the costumers and try to make them happy.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    We have a committed team working on a range of different projects throughout London, working in all sectors including; residential, commercial and conservation. The services that we provide are, architectural and structural 2d & 3d designs, calculation, planning permission, building control, new build, refurbishment, self contained flats, loft conversion, rear and side extension plus much more. I have over 30 years of experience in construction and have worked on a variety of different projects, from small developments to managing large scale Projects.

    Get in touch
  • At PK Decorating and Building Services we are committed to deliver the highest standards of quality in everything we do.Make the most of your property with high quality work, done the way it should be; fantastic workmanship, client communication and ensuring everything is clean and tidy when the work has been completed.While PK Decorating and Building Services is based in South London, we can deliver our services across London and the surrounding areas.If you have any questions please contact us

    Get in touch
  • Loft Conversion Company in St Johns Wood

    I Have more then 14 years experience as a builder. My team is committed to handling every job small or big with complete dedication and hard work. We believe in giving our customers the best value possible, ensuring outstanding quality of workmanship and offering a friendly experience from start to finish. We do Extension,loft,structure work,plastering,bathroom and kitchen Refurbished

    Get in touch
  • Loft Conversion Company in St Johns Wood

    we are working in the industry for the last 15 years we provide every type of building works

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Here to help – with honest, effective work at realistic prices. We’re not the cheapest – and we don’t try to be. What we do offer is genuine value: high-quality workmanship, clear communication, and solutions that make sense for your budget and your home. We never change prices, never argue, and never walk away from a job. Whether it’s a simple repair or a larger project, we take pride in doing things right – the first time. Every customer and every home is different, so we always take the time to listen, understand your goals, and offer a variety of tailored options that suit your needs. No pressure, no upselling – just honest advice and solid results. ✅ Transparent pricing ✅ Alternative solutions to suit your budget ✅ Reliable, respectful and tidy service ✅ No surprises – ever Get in touch today and see for yourself. We’re here to help – and we mean it.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Our mission is clear – to transform spaces into timeless works of art that seamlessly blend form and function. KNIGHTBRIDGE-ONE is driven by a passion for creating environments that not only meet our clients’ aspirations, but exceed them. Our diverse portfolio spans from groundbreaking new build works to the meticulous integration of landscape architecture, ensuring each project is a testament to our unwavering pursuit of perfection. Making innovation and expertise in design and build for conversions, extension and alteration works.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    Hello mh name it’s eriglen and i do all ready 9 years on construction site so Now time to start building my business I do loft conversations and I’m a handyman.

    Get in touch
  • Loft Conversion Company in St Johns Wood

    At EMA Structures, we specialise in groundworks, basements, and below-ground drainage, providing a seamless design and build service. Our team consists of qualified civil and structural engineers alongside experienced construction professionals, ensuring every project is completed to the highest standards of safety, efficiency, and durability. We handle everything from structural design and planning to the excavation, foundation works, drainage installation, and basement construction, delivering cost-effective and robust solutions tailored to each site’s unique conditions. Whether you require reinforced concrete structures, deep excavation support, or efficient water management systems, we offer engineering-led solutions that guarantee long-term performance. With a commitment to quality and compliance with UK Building Regulations, we work closely with clients, architects, and developers to ensure each project runs smoothly from start to finish. Get in touch with EMA Structures for expert groundworks, drainage, and basement construction solutions backed by engineering excellence and hands-on experience.

    Get in touch

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in St Johns Wood, 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 St Johns Wood?

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

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 St Johns Wood loft conversion company.

Find a loft conversion company in St Johns Wood 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 St Johns Wood.

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 St Johns Wood can view your job and register their interest.

Step 2: Review and compare St Johns Wood 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 St Johns Wood 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 St Johns Wood 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 St Johns Wood

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 St Johns Wood?

A local loft conversion company in St Johns Wood 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 St Johns Wood 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 St Johns Wood 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 St Johns Wood

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 St Johns Wood before agreeing to start the work.

Do I need planning permission for a loft conversion in St Johns Wood?

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

Other tradespeople in St Johns Wood

Cities