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

Loft Conversion Companies in Southampton

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

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 Southampton

176 Results

Sort by:

  • Loft Conversion Company in Southampton

    We’ve been in the construction industry jointly for over the past 30 years,covering all aspects of the building trade. Very reliable, conscientious and we feel very competitive on quotations.

    Get in touch
  • Loft Conversion Company in Southampton

    We cover all aspects of building work from ground works, steel works, full roofs, chimney repointing, lead work, brick work, patios, porcelain tiles, drainage, decking, house refurbishment and loft conversions

    Get in touch
  • Loft Conversion Company in Southampton

    Clameg have been proudly serving the South Coast for over 25 years. Our coverage area includes Hampshire, the Isle of Wight, Dorset, Wiltshire, Berkshire, Oxfordshire, and the outskirts of London down to Surrey, as well as West Sussex and East Sussex. We are happy to extend our services beyond these regions upon specific request. Our customers can expect the highest standards of construction and site practices. We specialise in design and build projects with a strong emphasis on sustainability, as well as the refurbishment of existing buildings to the highest standards. We are proud to have achieved recognition under the Considerate Constructors Scheme for our new build projects. Additionally, we are committed to continually enhancing our construction standards and site practices.

    Get in touch
  • Loft Conversion Company in Southampton

    Welcome to Made4UDevelopments Ltd Based in Hampshire, Made4UDevelopments Ltd specialises in high-quality extensions, refurbishments, renovations, and property improvements across Hampshire and the surrounding areas. We take pride in delivering reliable workmanship, professional project management, and attention to detail from start to finish. Whether you are planning a home extension, full refurbishment, structural alterations, or exterior improvements, we work closely with our clients to ensure every project is completed to a high standard. Our goal is simple — to provide honest, dependable building services with quality results that stand the test of time. From initial planning through to completion, we are committed to creating spaces that are practical, modern, and built around our clients’ needs.

    Get in touch
  • Loft Conversion Company in Southampton

    Hi my names Dan, I’ve grown up in the building industry with 15+ years experience, I was taught by my father who is a master builder and has been in the industry for more than 40 years. Me and my team pride ourselves on our high quality work, specialising in all aspects of carpentry including everything from hand cut roofs and oak framing, to bespoke high end wardrobes and other joinery aswell as undertaking extensions and loft conversions.

    Get in touch
  • We are new to my builder so no feedback yet, we are well known throughout the building industry. We are a specialist roofing contractors that undertake all roofing from slate, tile, cedar shingles, Leadwork,fascia soffits and all flat roofing. All our work comes with 30 year guarantee and a 10 year insurance backed guarantee.

    Get in touch
  • Loft Conversion Company in Southampton

    we as a company carryout extensions , refurbishments, carpentry work.we have a good portfolio of work and clients.

    Get in touch
  • Loft Conversion Company in Southampton

    Honest, trustworthy and hard working

    Get in touch
  • Loft Conversion Company in Southampton

    Looking to add a stunning open plan extension to your home, bathed in natural light? Need extra bedroom space for a growing family? Our team can bring your vision to life... Buildbetter are a full-service construction company based in Portsmouth covering Hampshire, West Sussex and Surrey. From small residential construction projects to larger commercial developments, we are committed to providing the highest standards of workmanship and customer service.

    Get in touch
  • Loft Conversion Company in Southampton

    Hi I’m a level 3 carpenter with 10 years of experience with site work and domestic have a range of jobs completed to a very high standard

    Get in touch
  • Loft Conversion Company in Southampton

    I have over 30 years experience in carpentry and joinery. All 1st and 2nd fix, loft conversions, kitchen fitting, bar and shop fitting. Fire door installer. All work carried out to a high standard and fully insured.

    Get in touch
  • Loft Conversion Company in Southampton

    M.R. Construction take on all aspects of the building trade. The director Matthew Reid has many years experience running many building projects and also is trained as a carpenter. All of our trades are skillful in their fields. We can offer fully managed projects with a helpful and professional team. Fully insured and references are available if required. We are also members of the Federation of Master Builders.

    Get in touch
  • Loft Conversion Company in Southampton

    I have 32 years building experience having initially completed a five year apprenticeship. My team and I cover the full range of building works, specialising in restoration and development, creating a bespoke look and feel for your home. I can fully support your building project prior to building work, with pre-planning advice to ensure your project makes best use of your space, meeting your building needs and budget.

    Get in touch
  • Loft Conversion Company in Southampton

    We are an established local builder , we specialise in new builds , extensions and loft conversions New to my builder , however many years of experience under our belts , competent , reliable builder with great knowledge of our industry

    Get in touch
  • Loft Conversion Company in Southampton

    Design & build ltd is the complete building service, from foundations to completed extensions, through to loft conversions/roofs. I have personally 37 years plus experience in all aspects of building-planning & building control, with a comprehensive satisfied customer base. I work with a highly skilled team in a multiple of trades, we concentrate on local contracts with the highest level of finish guaranteed. Please our instagram @designandbuildltdd for all our work display!

    Get in touch
  • Loft Conversion Company in Southampton

    Hi I’m Dan I’m Self Employed Carpenter and general builder based in Whitchurch but working all across Hampshire and surrounding areas. Specialising in carpentry and construction work. Including 1st and 2nd fix carpentry. Garage and Loft conversions. Shed and Garden office construction. Extensions. Landscaping and Fencing. Anything I can’t do I subcontract. Please don’t hesitate to get in contact either via my builder or Instagram. Thankyou.

    Get in touch

5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Southampton, are rated 5 out of 5 based on 1 review 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 Southampton?

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

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 Southampton loft conversion company.

Find a loft conversion company in Southampton 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 Southampton.

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 Southampton can view your job and register their interest.

Step 2: Review and compare Southampton 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 Southampton 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 Southampton 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 Southampton

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 Southampton?

A local loft conversion company in Southampton 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 Southampton 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 Southampton 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 Southampton

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 Southampton before agreeing to start the work.

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

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

Other tradespeople in Southampton

Cities