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Loft bedroom with exposed roof trusses and a Velux window
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Our services

Loft conversions that add space

Your loft is often the biggest untapped space in the house. We can turn it into a new bedroom, bathroom or home office.

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Tell us what you’re planning — we’ll come straight back to you.

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Loft Conversions

Your loft, put to use

Do you need more space for you and your family? A loft conversion could be the ideal solution. Lofts are often the biggest untapped space in a family home, and converting yours can give you a new bedroom, bathroom or home office.

Loft conversions are well suited to urban areas where ground space is in short supply — by building up, you don’t lose your garden. They are often more economical than an extension, quicker to complete, and can increase the value of your home.

What’s included

  • New bedrooms
  • Bathrooms
  • Home offices
  • Feasibility advice
  • Design & structural calculations
  • Full no-obligation quotation
Get a free quote
Loft bedroom with a window seat under a vaulted ceiling
2002

Established

Founded by Ryan Caws in West End, Southampton

30+ yrs

Combined experience

In the building and carpentry trades

Fixed

No hidden extras

The price we quote is the price you pay

4

Trade accreditations

Checkatrade · FENSA · FMB · FSB

Accredited & trusted CheckatradeFENSAFederation of Master BuildersFederation of Small Businesses

Is your loft suitable?

Our experienced team will be happy to discuss the feasibility of converting your loft. We advise on the most suitable type of loft conversion for your house and give you a full price quotation with no obligation.

We keep you updated at every stage, from design and structural calculations through to installation.

Loft bedroom with a desk under the eaves

On time and within budget

If you are looking for competent builders who deliver on time and within budget, please get in touch. We work within and around Hampshire, including Southampton, Winchester and Portsmouth.

Newly converted loft room with roof windows and wood flooring
Conversion types

Common types of loft conversion

The right conversion depends on the shape of your roof, the head height in the loft and how much extra floor space you need.

  • Rooflight conversion
  • Rear dormer
  • Hip-to-gable
  • L-shaped dormer
  • Mansard
  • Loft en-suite

Every conversion also needs a proper staircase, a safe escape route and insulation that meets building regulations, so we plan these from the start.

Our process

From first call to final handover.

A clear, managed process on every project — so you always know what happens next.

Start with a free consultation
  1. 01

    Initial consultation

    We talk through your ideas, budget and timescales, with no charge and no obligation.

  2. 02

    Site survey & assessment

    We visit, measure up and look at what the work involves.

  3. 03

    Proposal & quotation

    You receive a clear, itemised quotation. The price we quote is the price you pay.

  4. 04

    Planning & design

    We plan the work and help with drawings, planning and building regulations where needed.

  5. 05

    Project execution

    Our team builds to schedule, keeping you updated at every stage.

  6. 06

    Quality check & handover

    We check every detail with you and leave a clean, tidy site.

Recent projects

Built across Southampton & Hampshire.

Extensions, kitchens, bathrooms, lofts and carpentry — real projects by our team. Drag or use the arrows to explore.

View the gallery
Loft bedroom with exposed roof trusses
Loft bedroom with exposed trussesLoft conversions

A loft conversion bedroom with the roof trusses left exposed and painted, a roof window and a clean, bright finish.

Loft bedroom with a window seat under a vaulted ceiling
Loft bedroom with window seatLoft conversions

A loft bedroom with a built-in window seat under a vaulted ceiling.

Loft bedroom with a desk under the eaves
Loft room with study spaceLoft conversions

A converted loft used as a bedroom and study, with a desk set under the eaves.

Oak panelling around a loft landing
Oak-panelled loft landingLoft conversions

Oak panelling and a doorway formed around the top of the stairs on a loft landing.

Where we work

Oak panelling around a loft landing
Rated on CheckatradeWhere reputation matters
What our customers say

Built on recommendations.

Caws Carpentry have done an excellent job at opening up our wall and reinforcing it with steel. Ryan and his team were professional – on time, no problems.
GGary LangdownCustomer review
Caws Carpentry undertook a large extension with new roof, attic conversion and total refurbishment of the whole house over a period of 11 months. Caws Carpentry were well-organised with great attention to detail and kept us informed and consulted on changes to scope and cost. The quality of workmanship and finish was exceptional and we are so pleased with the result.
SSophie LiddellExtension, loft conversion & refurbishment
I thought this was a fairly straightforward job but as it progressed I realised there was more to it than I expected. In the end 3 different teams worked on it and I appreciated them each being experts in their own particular trade, rather than using someone who was more of a general carpenter/Builders. Each team was very efficient and did a superb job. Ryan was always available if needed and I was consulted on each stage of the project, and he took a lot of care to ensure the final design would stand the test of time. Highly recommend
RRoof repairs customerWinchester
CAWS Carpentry renovated our kitchen and bathroom in Winchester. They were quick, professional, and made the process stress-free. Highly recommend to anyone in Winchester and Chandlers Ford!
CClaire D.Winchester
I hired CAWS Carpentry for a commercial renovation in Eastleigh. They were efficient, friendly, and completed the project on time and on budget. Highly recommend for anyone in Eastleigh and Winchester!
JJohn M.Eastleigh
CAWS Carpentry helped us with a home extension in Winchester. The team was professional, reliable, and delivered top-quality work. Highly recommend them to anyone in Winchester and Kings Worthy!
SSarah & JamesWinchester
We had our kitchen completely redesigned, and the CAWS Carpentry team, who are top kitchen fitters in Southampton, did an excellent job. They were efficient, friendly, and left the space looking better than we ever imagined. The new layout is perfect, and it’s made cooking and entertaining so much more enjoyable.
KKitchen customerPortswood, Southampton
I recently had a renovation project done around the house, and the CAWS Carpentry team, who are expert builders in Winchester, was outstanding. They were reliable, friendly, and the quality of their work was exceptional. I’m so pleased with how everything turned out and would definitely call them again.
RRenovation customerWinchester
Our bathroom looks amazing after the renovation, thanks to the CAWS Carpentry team! They handled the bathroom installation smoothly from start to finish and paid attention to every little detail. They were punctual, courteous, and we couldn’t be happier with the final result.
BBathroom customerHedge End
We decided to convert our attic into a usable space, and the CAWS Carpentry team did an incredible job with the loft conversion! The transformation is amazing, and they made sure everything was exactly how we envisioned. It’s now our favorite room in the house. Truly exceeded our expectations.
LLoft conversion customerFareham
Read our reviews on Checkatrade
Also from CAWS

Explore our other services

01 / 08
New roof timbers under a temporary scaffold roof 01

Building services

Renovations, new builds, structural alterations and general building work, managed from start to finish.

 Open-plan living and dining room under a glazed roof lantern 02

Extensions

Single and double-storey extensions, built in keeping with your existing home.

 Modern kitchen with a white island and black tall units 03

Kitchens

Off-the-shelf or bespoke kitchens, including the electrics, gas and plumbing.

 Walk-in glass shower with grey tiles 04

Bathrooms

New suites, en-suites, wet rooms and underfloor heating.

 Aerial view of a single-storey rear extension with three roof lights 05

Roofing

New pitched and flat roofs, slate or tiles, chimney and lead work.

 Refurbished open-plan room with a log burner and oak floor 06

Refurbishments

From a new wall or staircase to a garage conversion or full refurbishment.

 Fitted oak wardrobes and drawers in a bedroom 07

Carpentry

Bespoke joinery, staircases, fitted furniture and timber buildings.

 Refurbished room with oak flooring and an exposed brick fireplace 08

Decorating

Painting, plastering, wallpapering, tiling and custom finishes.
Free, no-obligation quote

Tell us about your project.

Call us or send a few details and we’ll come straight back to you. We never turn an enquiry away — from a garden wall to a full extension.

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