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Loft conversion companies in Hertfordshire

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

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Some of our top rated loft conversion companies in Hertfordshire

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  • Loft Conversion Company in Hertfordshire

    All Bulding work undertaken

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  • Loft Conversion Company in Hertfordshire

    We specialise in all domestic and commercial building work & maintenance

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  • Loft Conversion Company in Hertfordshire

    G.Wright Electrics has been working with our customers for a number of years to build an excellent reputation and to provide high quality installations, repairs and maintenance. We’ll work to assess the condition of your property and take on any size project, keeping you in the loop every step of the way. We provide both electrics and security services in and around London.

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  • Loft Conversion Company in Hertfordshire

    I have a constructions company since 2017 April we do all type of constructions and steel works. I have a team to work with me. I have experience as a welder more than 25 years and I do have experience about extensions, plumbing, heating and all other constructions more than 10 years.

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  • Loft Conversion Company in Hertfordshire

    Construct Group | Design & Build We deliver premium extensions, loft conversions, refurbishments, and bespoke self-builds managing every stage under one roof for a seamless experience and nationwide reach Our process: Free consultation → Survey → Design → Planning → Building Regulations → Construction We handle everything from concept to completion, ensuring compliance, clarity on costs, and exceptional finish quality across every project. 📞 Book your free consultation today to discuss your plans and get clear next steps toward building approval.

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  • Loft Conversion Company in Hertfordshire

    LS TRADEMAN LIMITED company based in South East London. We have over a decade of experience in building, conversion. renovating, refurbishment and much more. We employ / sub contract only people we know are capable of offering the same high standard, and reliabilty as we do.

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  • Loft Conversion Company in Hertfordshire

    Greenfield’s Roofing Group – Professional Roofing Services At Greenfield’s Roofing Group, we pride ourselves on delivering high-quality roofing services, reliable workmanship and outstanding customer service across London and the South of England. We specialise in all aspects of roofing, from minor repairs and ongoing maintenance to complete new roofs and flat roof installations. Our services include pitched roofing, flat roofing, slate and tile roofs, chimney repairs, leadwork, ridge and hip repairs, guttering, fascias, soffits and much more. As a customer-focused roofing company, we believe in honest advice, clear communication and high standards on every project. Whether you need a small repair or a complete roof replacement, we approach every job with the same attention to detail and commitment to quality. Why choose Greenfield’s Roofing Group? • High standards of workmanship • Reliable, professional and friendly service • Competitive and transparent quotations • Domestic roofing repairs, maintenance and installations • Solutions tailored to your property and budget • Serving London and the South of England At Greenfield’s Roofing Group, our reputation is built on quality, trust and customer satisfaction

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  • Loft Conversion Company in Hertfordshire

    Tmbl carpentry ltd. We are a small carpentry company specialising in kitchen fitting, loft conversion and extension and all aspects of home development. Our otherside of the business we do commercial fitouts. Office interiors, property maintenance, shop fitouts. We have a over 50 years of combined experience in construction and can provide a multi trade team to cater for all domestic and commercial projects.

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  • Loft Conversion Company in Hertfordshire

    As a family run Business with over 30 years experience in the construction industry specialising in the groundwork and Civils sector our aim is to combine our experience and expertise to create value whilst completing our works to the highest standard. Having worked on a variety of projects in size and value we have the know how to complete any groundwork and building projects. Specialised areas include -foundations -site clearance and enabling works -drainage works -278 works -basements -concrete slabs -Paving and driveways -roadworks Our company ethos is to exceed client's expectations by providing clear concise advice to our clients with the view to create a positive experience throughout the process of your construction project. We have gained years of experience working as a standalone contractor or as part of a larger team for managed contracts. We operate throughout Buckinghamshire, Berkshire, Hertfordshire, Surrey and west London. Full surveys and costings will be offered with every enquiry as well as material testing, project documentation. All works are fully insured and guaranteed.

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  • Loft Conversion Company in Hertfordshire

    We provide Design & Build services. Planning application drawings and structural calculations, project management and construction service. ​ Our builders are all experienced in new build, extension, loft conversion and interior alterations.

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  • Loft Conversion Company in Hertfordshire

    Dynamic and highly experienced builder whit over 35 years in residential construction. Taking on variety of projects Lofts,Extensions, Renovations from concept to completion. Dedicated to quality in craftsmanship and delivering results to client expectations . Managing projects hands an. Fully insured whit public liability coverage. Reference from clients

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  • Loft Conversion Company in Hertfordshire

    I have 20 years of experience in construction. I am doing all works including material as well as only labour work. As per customer’s choice. I am good in Loft conversion Back extension Carpenter Old house repairing And all kind of refurbishment Free quotes

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  • Loft Conversion Company in Hertfordshire

    Specialist in loft conversions, exentions and carpentry

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  • Loft Conversion Company in Hertfordshire

    Hello, I'm Dan. I'm a qualified Architectural Designer with more than 10 years experience working within the design and construction industry. I mainly specialise in domestic home refurbishments, extensions and renovations. I believe that architectural services should be accessible to the ordinary homeowner and not just the wealthy elite. Therefore this I what I value as an ethos and practice as a professional. I love working closely with homeowners helping them achieve the home that they love. I offer a transparent honest, and straighforward service. Whether it's just a simple space planning design you need, to delivering the construction of your extension, I'm here to help.

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  • Loft Conversion Company in Hertfordshire

    Our business is a partnership that undertakes house builds, extension, loft conversion and all general building works with over 40 years experience. Running and organising from start to finish. With a team you can trust to see the work you want completed to the highest of standards.

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  • Loft Conversion Company in Hertfordshire

    At QC Projects , we specialise in high-quality residential and commercial construction across London and the surrounding areas. With over 10 years of industry experience, we pride ourselves on delivering projects professionally, safely, and to the highest standard from start to finish. Our services include extensions, loft conversions, full refurbishments, structural alterations, bespoke joinery, kitchens, bathrooms, roofing, fit-outs, decorating, and complete project management. Whether it’s a modern home renovation, a high-end finish, or a complex structural project, we bring the same attention to detail and commitment to quality on every job. We understand that choosing the right builder is a major decision. That’s why communication, transparency, cleanliness, and reliability are at the centre of how we operate. We work closely with clients, architects, designers, and building control to ensure projects run smoothly and are completed on time and within budget. Our team is fully committed to customer satisfaction and building long-term relationships through trust, workmanship, and professionalism. No shortcuts, no hidden surprises — just quality construction delivered properly. "Visit our website for more of our work"

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5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Hertfordshire, are rated 5 out of 5 based on 3 reviews from customers like you.

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What services are offered by loft conversion companies in Hertfordshire?

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

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 Hertfordshire loft conversion company.

Find a loft conversion company in Hertfordshire 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 Hertfordshire.

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 Hertfordshire can view your job and register their interest.

Step 2: Review and compare Hertfordshire 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 Hertfordshire 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 Hertfordshire 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 Hertfordshire

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 Hertfordshire?

A local loft conversion company in Hertfordshire 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 Hertfordshire 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 Hertfordshire 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 Hertfordshire

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 Hertfordshire before agreeing to start the work.

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

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

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