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Loft Conversion Companies in St James

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

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Some of our top rated loft conversion companies in St James

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  • Loft Conversion Company in St James

    Plastering

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  • Loft Conversion Company in St James

    At MILSTRUCT Limited, building is more than just our business — it's our family tradition. With over 40 years of combined experience in the construction industry, we deliver high-quality workmanship across both domestic and commercial projects. As trusted, approved contractors for major pub chains and contractors for private clients, we have successfully completed large-scale projects including full refurbishments, extensions, and structural works. Our reputation is built on providing a seamless, professional service while maintaining the personal, hands-on approach that only a family-run business can offer. We are committed to working closely with our clients to bring their vision to life — delivering projects on time, on budget, and to the highest standards. Quality, reliability, and integrity are the foundations we build on every day. When you choose MILSTRUCT, you're choosing a team that values your project as much as you do.

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  • Loft Conversion Company in St James

    Professional

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  • Loft Conversion Company in St James

    Dedicated electrician with years of experience installing, maintaining and repairing electrical wiring systems. Troubleshooter skilled at designing wiring layouts and constructing wiring circuits. Versed in National Electrical Code and local building regulations. Adaptable with extensive experience providing first-class results. Meets job demands and deadlines through diligent work-ethic and dedication to quality. Motivated with years of progressive experience. Energetic self-starter and team builder. Navigates high-stress situations and achieves goals on time and under budget.

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  • Loft Conversion Company in St James

    All Forms Of Property Refurbishment & Maintenance In London & The Surrounding Counties To A Standard That Suits Your Budget

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  • Loft Conversion Company in St James

    Loft conversion, extension, carpentry and joinery, kitchen and bathroom, house refurbishment , bespoke kitchen and wardrobes, garden

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  • Loft Conversion Company in St James

    M&M Team is very high qualified team .

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  • Loft Conversion Company in St James

    Been working 3 years in construction mostly everything but expertise in laminate flooring.

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  • Loft Conversion Company in St James

    Hi, my name is Cipriano from C&C Construct Ltd. I have over 20 years of experience in the construction industry. Although we are new to this platform and do not yet have reviews here, we can provide references from private clients and show examples of completed projects. We carry out all types of construction work, both large and small, always to a high standard. We take pride in delivering quality workmanship, keeping sites clean and tidy, and ensuring every project is as smooth and stress-free as possible. Our team is professional, polite, and committed to customer satisfaction.

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  • Loft Conversion Company in St James

    Hi , I'm a 27 year old guy looking to extend my business and bring more smiles to more costumers . With over 10x years working in construction industry in big building sites doing multiple trades and working with very experienced mans from where i get to learn many many things related to construction which you cannon find anywhere online or no one tells you this little secrets ,I'm ready to extend my business . I'm sure that we can find solutions for whatever problems you have , now i'm not saying that I now everithing or all the trades in the world but being in this industry for so many years I do have lots of trade mans I work with . I know , most of you will think '' He's young , he doesn't know s**t '' ,let me tell you something , even if an older and more experienced man will do your job better or quicker or whatever is because trough his experience he learned how to hide all this ''bollocks'' and how to get away whit it until the job is done and payment is made , anyway i will say no more .... I,m looking forward to asist you in whatever problems and developments you got ! Many thanks !!!

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  • Loft Conversion Company in St James

    8 years experienced in dryliner

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  • Loft Conversion Company in St James

    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 St James

    Carpentry specialists with 15 years experience in first fix, second fix and roofing. Our extensive experience on renovating listed buildings to new builds, allows us to provide all manners of carpentry efficiently for contractor's and customers alike.

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  • Loft Conversion Company in St James

    hi I am a carpenter with 30 years experience doing all aspect of works from extensions to loft conversions and total refurbs all works done to high end standards my aim is to work with you the customer from start to Finnish to achieve your dream

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  • Loft Conversion Company in St James

    Hello my name is Costel I have experience in brickwork more then 10 years I have very good reference from customers and proves with photos if you wish to see I Olson have my own company and a van whith tools I have more skills with paving stones etc. And gardening walls and driveway I’m responsible for my work to be everything done..thank you

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  • Loft Conversion Company in St James

    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.

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4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in St James, are rated 4.4 out of 5 based on 12 reviews from customers like you.

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What services are offered by loft conversion companies in St James?

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

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 James loft conversion company.

Find a loft conversion company in St James 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 James.

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 James can view your job and register their interest.

Step 2: Review and compare St James 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 James 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 James 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 James

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 James?

A local loft conversion company in St James 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 James 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 James 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 James

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 James before agreeing to start the work.

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

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

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