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Loft Conversion Companies in Westminster

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

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Some of our top rated loft conversion companies in Westminster

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  • Loft Conversion Company in Westminster

    I'm a small builder and I have been working in the construction industry for over 35 years. Through my career I have built complete houses various types of extensions renovation work to all types of bathrooms and kitchens.

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  • Loft Conversion Company in Westminster

    We are a small, family run business in south east London with over 35 years experience in the construction industry. We cover London and the south east of England. We cover work from kitchens and bathrooms all the way to complete new builds and everything in between. We take great pride in all work we carry out and are not satisfied until every job is complete to the highest quality.

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  • Loft Conversion Company in Westminster

    I do all types off building work. I like loft conversion speacialist extension like kitchen, brick work,bathroom,outside dommer and all types of roofwork etc.

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  • Loft Conversion Company in Westminster

    I have a skill of all building work like plumbing electrical flooring painting loft conversion extension new bath work garage etc.

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  • Loft Conversion Company in Westminster

    General Builders 15 years experience Insured References

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  • Loft Conversion Company in Westminster

    FLR CONSTRUCTION LTD

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  • Loft Conversion Company in Westminster

    ProjectSmart Loft Solutions Ltd specialises in raised loft boarding, loft conversions and loft insulation. We provide a free survey and quotation for all our services and are experienced in full project management. Our team pride themselves on our skills in transforming spaces into useable and liveable areas. We can advise you on your energy efficiency in your loft by insulating to industry standards. We offer competitive pricing and a professional efficient service. We have over 20 years of experience in the home services industry. Professional and friendly service from start to finish. We pride ourselves on our quality of work, organisation and customer service. ProjectSmart Ltd is 5 star rated on Google, giving our potential clients peace of mind that you are in safe hands with us!

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  • Loft Conversion Company in Westminster

    New to ‘MyBuilder’. A qualified Architectural Technologist (CIAT accredited) with over 12 years industry experience ranging from high-end commercial, residential, retail (such as KFC, Wasabi, Starbucks, Watirose, Subways etc) and Stadium projects. All architectural & struc services are offered from planning to building control packages up to completion. Please contact us to determine the level of service you require and to make a FREE initial assessment and provide a fee proposal.

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  • Loft Conversion Company in Westminster

    Very Proffesional. Punctual at all times. Work done to the highest standard at good prices. Over ten years Experience in all aspects of build work including Lofts and Extensions.

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  • Loft Conversion Company in Westminster

    Loft conversion, extension and refurbishment specialist.

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  • Loft Conversion Company in Westminster

    At the heart of our success lies our CEO & Founder, Spyros. A true visionary, Spyros has successfully brought together a team of passionate professionals, all united by a shared vision for SkyHouse's bright future. His relentless pursuit of perfection and enthusiasm for tackling challenges drive our company forward. Spyros’s leadership and innovative mindset ensure that SkyHouse continues to set new standards in the industry, consistently delivering excellence in every project. Our guiding principle, “The Sky’s the Limit,” embodies our dedication to realizing the utmost potential of your home. We recognize that your dream house is a unique manifestation of your values, and we channel all our efforts into making your vision a reality.

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  • Loft Conversion Company in Westminster

    Bluestonestate is north London based construction and loft conversion structural works reactive house extension

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  • Loft Conversion Company in Westminster

    A.S.L Corporation Ltd, stands as a powerhouse in the UK construction industry. Based in London but serving the entire nation, we operate under a singular, driving philosophy: "Built Strong. Built Right." Our brand is defined by a commitment to civil-engineered results that prioritize structural integrity and aesthetic precision. We bridge the gap between high-end quality and affordability, offering a Best Price Guarantee that ensures our clients receive premium construction without the premium price tag. Our "no shortcuts" approach is backed by a dedication to on-time delivery; we respect your schedule by starting promptly and finishing according to plan. ​Our versatile service portfolio covers every stage of property development. We handle heavy structural work, including extensions, lofts, and garage builds, alongside refined interior services like bespoke kitchen fitting and tiling. Our expertise extends to the exterior with professional roofing, painting, and civil works. To ensure long-term value, our maintenance and "Deep Finish" teams provide specialized care, from gutter restoration and roof cleaning to driveway jet washing and protective sealing. At Beast Construction, we transfor

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  • Loft Conversion Company in Westminster

    We are a multi-disciplinary group of architectural designers, structural engineers, interior designers,builders and support staff. Our backgrounds span residential extensions, commercial developments, restaurants, and bespoke interior schemes. Across projects big and small, our collaborative process is shaped by mutual respect, timely advice, and real technical depth.

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  • Loft Conversion Company in Westminster

    We are a construction company with long experience behind doing loft conversion Extension house refurbishmentComplete an all type of building work Electric plumbing

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  • Loft Conversion Company in Westminster

    I am a professional builder, 15 years I have been working as a builder. I love my job and I love helping my clients. I am very experience individual I have a professional team that works with me. We always complete our task before the deadline marked. Most my clients show me a photo what they need and i present them exactly same what they ask for. Business is my communication. Communication is vital with our clients so we don’t have any misunderstanding.

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4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Westminster, 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 Westminster?

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

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 Westminster loft conversion company.

Find a loft conversion company in Westminster 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 Westminster.

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 Westminster can view your job and register their interest.

Step 2: Review and compare Westminster 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 Westminster 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 Westminster 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 Westminster

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 Westminster?

A local loft conversion company in Westminster 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 Westminster 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 Westminster 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 Westminster

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 Westminster before agreeing to start the work.

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

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

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