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Find Local Basement Conversion Company Near Me

Find everything you need to know about hiring a local cellar conversion specialist. Extend or renovate an existing basement, or excavate a new one from scratch.  Below, we cover tips to help you find a basement conversion specialist:

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How to find a reliable, local basement conversion specialist

A basement conversion has the potential to add a lot of value and space to your home. Once your team excavate your new basement, you can turn it into a bedroom with an ensuite bathroom, a new gym, a living room, or any other living space.

Transform your underground spaces into useable rooms with the help of a skilled cellar conversion specialist in your local area.

What does a cellar conversion involve?

If you already have a basement, then you might be looking to turn it into a liveable space by adding structural supports, damp-proofing, insulation, heating, and a new ventilation system. If your cellar was intended for storage and has low ceilings, your basement conversion team might have to dig down to increase the head height before they can add things like new plumbing and electrics.

Or, you might be thinking about extending your current basement, such as by digging underneath your garden. This is another great way to add more space and additional rooms to an existing basement.

If you don’t currently have a basement, you can also create a new one by carrying out excavation work. As well as the basement, you’ll also need a new staircase.

Whether you want to build a cellar from scratch or want to turn your cramped storage room into a brand new living space, a basement conversion specialist can help.

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Picture of a basement converted into a living room with grey sofas and a glass panel staircase

Factors to consider before hiring a basement conversion specialist

On average, a basement conversion can take anywhere from 12 to 20 weeks to complete. Avoid stress and costly repairs down the line by hiring a skilled specialist to help you upgrade your home. Look out for basement conversion installers that:

  1. Are a skilled company with a strong history of high standard projects
  2. Have all the licenses and insurance needed to protect you and their workers
  3. Have a good range of positive reviews from previous customers vouching for their reliability
  4. Are available to carry out the work in the timeframe you need it by
  5. Are quoting a price and payment option that you are happy with, having compared the quote with other basement conversion companies

A local basement conversion specialist is more likely to respond quickly as they’ll be right around the corner and ready to help.

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How much does a basement conversion cost?

If you don’t have space for a rear or side extension, and don’t have a loft to convert, then a basement conversion is a great option to maximise your home’s space. How much you’ll end up spending on your basement conversion depends on a range of factors, including:

  • The size and layout of your basement
  • How many structural changes will be needed, including extra support beams and underpinning
  • Waterproofing and damp proofing costs, as well as the installation of effective drainage systems
  • Whether you want a window well installed, which can help you introduce light into your basement
  • Basement insulation and soundproofing
  • Labour costs, which are affected by where you live in the UK

The average basement conversion costs between £120,000 and £160,000. For a more accurate quote for your specific project, speak to a basement conversion specialist today.

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Do I need planning permission for a cellar conversion?

You won’t need to apply for permission for a cellar conversion, as long as:

  • You’re converting an existing residential basement into a living space
  • How you’re using it isn’t significantly different and the basement isn’t a separate unit
  • You don’t alter the external appearance of the property, such as by adding a light well
  • You don’t live in a listed building

Excavating a brand new basement which involves major works is likely to require planning approval.

For more information, contact your local planning authority or visit the Planning Portal website. You can also read our planning permission guide for more information.

Picture of a basement converted into a living room with wooden staircase, wooden floors and cream coloured walls

Questions to ask before you hire a basement conversion specialist

Whether you’re looking to build a brand new basement or simply want to extend or improve your existing cellar, there are a few questions you should ask before you hire a specialist to excavate your new room:

Do you have public liability insurance and what does this cover?

While it’s not a requirement for them to have it, it’s a good idea for your basement conversion specialists to have public liability insurance to cover you and them against any accidental damage done to your home or personal injuries. Make sure to always ask your tradespeople what insurance they have before you hire them. This will guarantee protection for both parties.

How many years of experience do you have?

Knowing how many years of experience your basement conversion specialist has will allow you to pick a tradesperson who you are confident has enough experience to carry out a high quality job. When you’re finding a tradesperson through Rated People, head over to their profile to check out the pictures on their work gallery and their ratings and reviews.

Do you use subcontractors? If so, are they licensed and insured?

Your basement conversion specialist is likely to employ subcontractors. It’s a good idea to confirm the qualifications and insurance coverage of everyone who will be working on your project, including surveyors, structural engineers and electricians. Anyone working with gas needs to be registered with Gas Safe, and anyone installing electrics (in England and Wales) needs to be Part P certified to be able to self-certify their work. These tradespeople will have valid documentation that you can ask to check.

What is your estimated timeline for completing the project?

Knowing what the estimated timeline for completing the project is will help you set realistic expectations about how long your basement renovation will take to complete.

How much will the job cost?

Asking how much the job will cost will help you budget for your project and will ensure price transparency before you hire. How much you’ll end up spending depends on the scope of your project, and where you live in the UK, so make sure you add plenty of details when you post a job.

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Having worked for myself for 30 years in most aspects of construction and maintenance my good reputation means everything to me. I pride myself on leaving a satisfied customer who will recommend me to family and friends.

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Reviewed by Joyce on 18/10/2023

We are a damp proofing company with 25 years of experience.We work to the highest possible standard.We like to make all our customers happy and delighted that they have chosen to work with us.

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Reviewed by Mark on 30/11/2023

From start to finish, their professionalism, attention to detail, and commitment to customer satisfaction were truly commendable. They showed great technical expertise, able to get around a lot of obstacles which presented themselves during the cellar to bathroom conversion. I wholeheartedly recommend GBM homecare and Goia Construction, from their hardworking attitude to their courtesy and craftmanship. Thank you

A&S DAMP PROOFING. We are a family run business with more than 15 years of experience. At A&S DAMP PROOFING, we pride ourselves on an efficient and friendly service, and achieve 100% costumer satisfaction ethic. What is tanking? Are you looking to tank your basement? The waterproofing basement and cellars is very vital in protecting your property from any damage that water can cause to the building. By installing the waterproof membrane it will prevent the damp coming through and it ensures that the walls and floors are protected. A&S damp-proofing are experts and experienced when installing tanking, rising damp and penetration damp. A well designed waterproofing system will only work if it’s installed correctly and we pride ourselves on the quality of our installation. We undertake small and big projects, have professionals builders and high quality workmanship at very competitive prices. We ensure to finish all our projects to a high standard. Benefits to you. We will undertake a variety of activities such as: fitting aqua channels around the walls to collect any water, installing a sump pump to divert any ground water, fixing membranes in the wall to prevent any future damp and plastboard/ plaster to make the basement or cellar fit for living. All these interventions are effective in preventing basements floods. This benefits you in a healthier home environment, a new habitable living space, prevention of structural damage. Say goodbye to the damp and call A&S Damp-proofing. We are always happy to help.

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Reviewed by Anwar on 2/10/2023

Great service, reasonable price and quick turnaround. Had water coming in basement from the ground and was installed a pump and tank. Highly recommend. Very clean and tidy and friendly, very knowledgeable

Davies Builders have been trading for over 20 yrs we base our business on good quality professional workmanship and honest approach,producing fantastic results on time/budget.Our sole aim is to provide the best service. Please contact us for a FREE quote.

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Reviewed by Nicola on 4/1/2024

Leo and his team were brilliant. They did our complex basement conversion with ease and it looks great. Thank you

Fast, friendly, and fully accredited, our professional Building Services are well renowned throughout the Buckinghamshire area. Our team is up for every job, managing contracts from inital architects drawings and liaising with building control, from foundations to roof and right up to final sign off, we have built our business on impeccable customer service, excellent work standards and a Christian ethos. We always stand behind our work, with customer satisfaction being our #1 priority. Contact us to learn more about what we do and how we can help you!

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Reviewed by Darren on 11/3/2024

I can't comment on the any work carried out but we had him booked in to attend, he did not turn up on the day and when I messaged him I had no reply, not very happy as I took time out of work.

I’ve been in the building trade for over 20 years and would like to think I’ve gained knowledge and experience in most aspects of domestic building i always like a challenge and try to make people’s concepts a reality I will always try my best to give a fair price and always adhere to time scales my main background is general building work .but I have a host of sub contractors working with me so we can take on more or less Any work you may require

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Reviewed by Kevin on 17/3/2024

Paul was fantastic arrived within 10 mins, wired for the job said he could do the job within the 2week timescale . He arrived prompt on the day and work was done professionally within 2 hours new French doors were fitted. I would thoroughly recommend Paul to anyone and will not hesitate to to use him again in the future.

We are a high-quality refurbishment company based in Glasgow and have been working through the last 10 years with different clients around the area providing renovation services with a wide range of different projects, We can offer full flat/ house renovations including plumbing, electrics, joinery, plastering, tiling, painting and decorating, We are specializing in full bathroom and kitchen renovations, managing projects from A to Z with High standard finishing Get in touch with us then we will help you transform your properties into your dream

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Reviewed by Anne on 16/2/2024

Great work and very pleased with Pawel. Reliable and professional - would highly recommend him.

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CPS

Cellar & Basement Conversion

I have been in the construction business for 40 years I hold nvq in bricklaying. I also under take most building work, from new build, to maintenance ie repairs and refurbs. I’m a sole trader working with my three sons I’ll like to call us a happy family business with very friendly manner, politeness and trustworthy. We have also recently partnered with a sole trading plastering company, ArdentPlastering.

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Reviewed by Mk on 11/5/2023

The guys did a good job beginning with a realistic assessment of the work that needed doing, to delivering the job. Very pleasant, professional very tidy and good value for the money.

Been in the building trade best part of 30 yrs enjoy looking at the end product always professional from day one and customer needs are always important to me

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Reviewed by Ben on 10/3/2024

what should have been a relatively straight forward job turned into the biggest mess I’ve witnessed. Unable to stick to quoted budget or timescales, messy, disorganised, spent about 4 days trying to put spotlights up which he never mastered and after I’d sacked him off he’d managed to disconnect the light to another room. Always seem panicked, unsure of what he was doing and error prone. Comfortably the worst tradesmen I’ve employed and we’ve had a lot. He’s a nice bloke but just can’t do it.

Chambers Construction is a family run a complete building service based in Worcestershire.We specialise in new builds, extensions,conversions and complete refurbishment throughout to suit all your building needs. All our tradesmen are fully qualified and experienced to achieve the highest standards whatever your demands. We pride ourselves on our exceptionally high standard of finish and work with our customers to ensure their build is as stress free and enjoyable as possible.

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Reviewed by Day on 1/11/2015

Excellent job, Sam and his team worked efficiently and tidied up nicely at the end of each day. Would have no problems with recomending Chambers Construction to others.

i have been in the building trade since leaving school 33 years ago and have lots of experience from a leaking tap to a complete new build,we are CSCS CPCS and CHAS accredited contractor and fully insured up to 10 million,have many satisfied customers

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Reviewed by Susan on 13/7/2019

Great work!! Still haven’t installed the spa but looking forward to it. Good genuine folks, great value, prompt and job complete super fast. Definitely recommend to anyone.

MENDIP VALE- A REPUTATION BUILT ON QUALITY

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Reviewed by Phil on 5/6/2013

Mat exceeded my expectations at each stage of this tricky job. Highly recommended.

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Reviewed by David on 13/3/2013

the best tradesman we have ever used (and we have used a good number of them). He is meticulous, hard working, multi-talented and entirely dependable. We recommend him without hesitation or reservation.

Hi im a time served carpenter and joiner with 30 years of experience i am fully qualified carpenter and joiner experienced in first and second fix as well as shop fitting i am a specialist in kitchen fitting, bespoke staircases but do cover all carpentry and joinery services no job too big or small

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Reviewed by John on 8/6/2020

Bary Briggs and team were amazing from start to finish of the requedted work. Knowledge was outstanding, work was outstanding. Time keeping amazing. Completed the work on time and within schedule as per tender for the work. I will definitley reccomend for future work at my property and to friends and family.

We are a local building company who specialise in full project solutions. From concept through to completion we work with our clients to ensure that their project is carried out to the high standard that we expect, and in such a way that the process is enjoyable. I personally project manage every job, handling all of the details, technical issues and suppliers, meaning our customers can just make the important decisions and then sit back and let us make it happen! Our approach is full turn key, which means when we hand the job over to a client everything is finished, commissioned, tidy and ready to use.

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Reviewed by Steven on 12/2/2015

Ryan, Plan Property Services, did an excellent job. He arrived at exactly the agreed time, the plastering was faultless and he left the place clean and tidy. I would gladly recommend him.

We are a local building firm with over 20 years experience, offering a wide range of skills in all aspects of building, home improvements, and landscaping. We pride ourselves on our work.

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Reviewed by Corien on 17/4/2014

They contact me straight away after placing my job on ratedpeople. And they where able to come out next day, they had to come back a day later to finish off the job properly, which was brilliant. I now have no more safety issues and will definitely call them again

P.K.P CARPENTRY AND PLASTERING We are committed to providing the highest quality workmanship with a first class service on time and budget.

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Reviewed by Vicky on 20/2/2014

Phil is an excellent tradesman - we had him replace some skirting boards, door frames and picture rails in 2 rooms. He was very reliable, reasonably priced and worked to our budget, his craftsmanship was very good, he was a quick (and tidy) worker, and he gave us plenty of extra advice and tips for other rooms. Additionally, he went out of his way to help us arrange getting some door restored by one of his contacts. Would thoroughly recommend and have saved his details for use in the future! Thanks Phil!

We are a family run business with 30+ years experience in the building/construction sector specialising in full renos and extensions

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Reviewed by Jon on 17/8/2014

Extremely professional and superb quality job. Very happy and would use again plus recommend with no hesitation at all.

I am a sole trader with 20 years experience specialising in hard landscaping e.g. walling, flagging, drains and fencing. I am also a time served plasterer. I can draw on a range of trade contacts to create and manage a team for larger projects.

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Reviewed by Miah alim on 2/2/2016

Excellent work,on time and cleaned up after himself. Looking at doing other jobs for me.

12 years experience on full house refurbishment

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Reviewed by Am on 30/4/2018

Great work. Clean. Tidy. Efficient. Thanks very much!

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