The quick way to find a local Cellar & Basement Conversion specialist

Post your job for free. Get quotes. Read reviews.

Over 10,000 rated tradespeople
are ready to help you get your job done

Over 3 million happy homeowners
have found a quality tradesperson

Over 1 million ratings
with 88,000 5* ratings in the last 12 months

Join our group of happy customers

Thousands of 5 star reviews

Read real reviews from customers about their service experiences.

Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Browse Cellar & Basement Conversion specialists

Take a look at our Cellar & Basement Conversion specialists profiles, read reviews and request quotes directly.

GMS avatar

GMS

Cellar & Basement Conversion

Gareth, the proprietor of GMS is a qualified wood machinist by trade and has over 25 years’ experience working within the construction industry. Gareth first started the business in 2005 with a view to provide clients across North Wales and Cheshire with kitchens. In the last 10 years the business has diversified and now accommodates a scheme of works within construction from kitchens to bathrooms, gardens to bedrooms, fire and flood damaged properties and more. Gareth employs several staff and subcontracts to NICEIC registered Electricians and GAS SAFE registered gas engineers. Therefore, GMS can offer project managing and the client only needs to converse with one trade [GMS] rather than multiple. Thus, taking the stress out of the job.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Mark on 23/2/2018

Great communication and work carried out to a high standard.

All aspects of building work undertaken from new kitchens, loft conversions to full extensions

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Andrea on 10/1/2023

Excellent job putting in underfloor insulation.

J Nengas avatar

J Nengas

Cellar & Basement Conversion

30 years of experience in all trades pluming, heating and all building works .plastering.tiling.and extensions.conservotorys..

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Edward on 3/9/2020

Jason and his partner fitter a new bathroom for me, including all new plasterboard etc as water had gotten behind the old tiles. They tiled the floor and walls for us also. The bathroom looks brilliant couldn’t be happier, more than happy to trust them when not at the property and to top it all off when they were finished I went out to my garage so that I could take all of the rubbish to the tip and they had beat me to it. Will be hiring again for my second bathroom shortly!

RCOR avatar

RCOR

Cellar & Basement Conversion

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Alan on 3/12/2012

Rob was very helpful in giving us product advice without being pushy and very conscientious when carrying out the work. highly recommended

W&D is a family owned, personal construction company. Well known but not limited to the local communities of Old St.Mellons, Marshfield and Rumney in Cardiff. With over 60 years of experience between the owners. We make your dreams, a reality,Stress free!

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Nicholas on 18/1/2015

Absolutely fantastic, real quality tradesmen who take pride in delivering high quality work. The extension looks superb, is built to a high standard and is better than expected. Can't recommend Tony and Leighton highly enough.

R@S avatar

R@S

Cellar & Basement Conversion

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Mark on 1/5/2013

I apologise for not having posted a rating before now. I thought I had already done so. Our loft conversion has transformed how we live.The cost was fair. The work was carried out to a good standard, quickly and tidily with minimum disruption. We are happy with the result. The "Boys" were friendly and easy to have about and full of good advice. I would use Roy again and have already recommended to others.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Richard on 8/5/2014

Scott was very helpful, and carried out the work to a Excellent standard, and completed the work on time

I've been plastering for 13yrs now and cover most aspects. Internally from covering artex, drylinning, small extensions to full refurbishments, exterior I'm able render new and old property's with a range of different finishes, e.g smooth, dash, cast

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Karen on 28/2/2017

Viewed and quoted same day, completed the job as per agreed. Good quality work and cleaned up after!

Reuben lee avatar

Reuben lee

Cellar & Basement Conversion

We are a reliable trustworthy team with 20 years of experience on the work that we offer all work carried out to a high standard, we have a wide range of services that we offer such as Roofing, General Building, Landscaping and Fencing, Don't hesitate to get in contact with us for a free no obligation quote.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Huw on 18/3/2025

A garden wall needed repairing at an awkward junction with a neighbour's wall, where our coping stones had come loose and the blocks crumbled. Adam picked up the job promptly and turned up, with a colleague, the next day to complete the repair. The wall is now secure and looks neater. The work was carried out efficiently and they left the area clean and tidy.

At Right Fix Home Developments you can rest assured as we provide the highest of standards. We have over 10 years experience working with contractors on building sites and direct to customers for all aspects of home improvements. "NO JOB TO BIG OR SMALL"

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Darren on 9/4/2025

Had a quote of Gareth to replace my polycarb roof with tiled.Out of three quotes his was the most fair,had some shockers !!But no drop in quality,did a great job and completed in just 3 days.But what impressed me the most is how honest and genuine he is I am sure that if I have any issues in future he will be happy to help sort it.Nice and clean after completion also.Recommended.

With over 24 years of experience in the building trade in Britain and France, Boudot Building Services is a company established by Eric Parry. We provide a wide range of services such as: Full bathroom makeovers Full kitchen makeovers Bedroom makeovers (From design to installation) Emergency call outs All aspects of plumbing If you are looking for a reliable, clean, and friendly service, call Eric for a free no obligation quote

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Kennedy on 13/4/2025

A diligent worker who takes exceptional care with his work. Eric fitted us a really lovely bathroom. He had lots of experience to consider practical details and potential problems and was able to support the design process to meet our needs. Will definitely call on Eric for future projects.

Making your dreams reality! We are friendly and reliable contractors that will do our best to make the job run smoothly and fit within your budget. we cover all aspects of building and renovation, kitchen/bathroom fitting and more... we will give you the best quote we can and more importantly make sure the job is done properly inside and out. Just look at are 5* star rating! I look forward to hearing from you, please give us a chance to make your dreams a reality.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Des on 24/4/2020

Kai and his team done a fantastic job on my garage extension. In this time of lockdown Kai went the extra mile to keep getting the Materials for the Job which he did admirably. I would have Kai and His team back anytime I need work doing A good honest tradesman

Elite Building contractors South Wales. We are a multi trade company with over 30 years experience, we Specialise in extensions, house renovations, garage conventions. Bricklaying Patios Damp proofing

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Kimberley on 16/5/2025

Elite building contractors were fantastic from start to finish and the best price we found when quoting up the work. Work done to high standard and guys all polite and professional

Plastercare are a Professional finishing Specialist servicing the private and commercial sector for over 25 years we specialize in internal and external works refurbishments of older Properties and one off bespoke Builds all works are fully Guaranteed , we are Also an established remedial Damp Specialist with fully qualified technicians , all undergone training courses through Sovereign Trojan and PCA (Property care Association ) Rising Damp / tanking / lining systems floor bridging ,Penetration Damp, Water ingress , condensation control Wet & dry rot timber treatments wall ties all works fully Guaranteed cert provided where applicable and required ... We additionally offer full Timber & Damp Survey reports , none invasive or invasive surveys carried out full Indemnity insurance public liability, With inhouse PCA trained Surveyors we pride our selves with a quality service, expertise advise and highly trained tradesman reliable and trustworthy, you can be assured to get a prompt and competitive quote from us.....

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Vikki on 6/5/2020

Very helpful and professional

I’ve been plastering for 35 years with vast experience in all aspects of traditional plastering

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by spiro on 31/12/2024

good workmanship

New builds, extension & garage construction specialists. 20 yrs experience,clean,efficient,reliable,friendly service,free estimates,all work guaranteed. New to rated people feel free to check out photos of our previous work.

Latest homeowner review
full starfull starfull starfull star
Reviewed by Nicola on 29/4/2015

Not very happy. The company (Paul) didnt finish the job and I had to pay out more than I had withheld (£50) to another tradesman to complete the job. The work that was completed was satisfactory but in view of the job not being finished cannot rate them well. Also never got my keys back despite numerous pleas. Not reliable at all.

We are a groundwork’s and building company with 20 years experience

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Audrey on 8/12/2020

Jay and his team connected our garden house to the water supply and sewer network. They worked fast and did a very good job. Our terrace looks better now than before! The quote was honest for the amount of work. I really recommend them.

Everbuild construction, is a company that provides high quality craftsmanship from fully qualified time served tradesmen. We are committed to provide the the highest standards of work and a customer frendly service.

Latest homeowner review
full starfull starfull star
Reviewed by JULIA on 16/9/2020

They turned up without any materials and we had difficulty getting any. The fence has been put up in a bad way with short posts, and screws dangerously protruding through to next door. My old patio was not taken up as quoted, and new slabs were laid over the top. It is not level and slopes forward & sideways with a bump in the middle. Slabs are uneven, the built step has all broken away, as there is little support under it. And the grouting has gaps and different grouts used. Too many other probs to list.

At Cymraeg Construction, building work has been at the heart of our family for generations with skills, knowledge and training passed on from one to another, even in the day to day running of the business we can call upon over 40 years experience from my father who is an integral part of the company and has made us what we are today with a passion for quality that shines through on every job we undertake. Covering all of South Wales, you can be sure to rely on us to undertake any project you may have from conception to completion, we can take care of all aspects of the build including planning and skilled tradesmen in all trades, let us deal with all the complications and timings as we project manage the process to ensure everything is done correctly and to schedule all while keeping you informed every step of the way. Please feel free to contact us for a free no obligation estimate on any work you may have. Cymraeg Construction.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Philip on 4/2/2023

We are a locally based family business who pride ourselves on a friendly & reliable service. With over 18 years experience in the building trade we are a dedicated team who will work with you to achieve your desire results from start to finish.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Andrew on 11/9/2013

Nice chap, turned up to quote when he said he would but quoted a little high for me. I bored someone else.

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles