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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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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 Ray on 24/3/2024

Armand and his team have been very proactive and quick to respond. We have been very impressed and happy with the tanking he did to our vault.

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 Kimberley on 6/4/2024

Paul has been extremely helpful. He came to assess a problem of damp very promptly at my property and has been very helpful and honest in his view of how he would proceed with repairs. If I do go ahead with the repairs I would feel more than comfortable to proceed with Paul. I would highly recommend him after my experience

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

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 James on 23/4/2024

Excellent job start to finish and reasonably price too! Would depend recomend

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 Monica on 21/4/2024

Great work all round on replacing my kitchen floor, worktops, hob, sink and dishwasher. Workmanship was meticulous and thoughtful. Fair price especially since my floor needed some additional boards but nothing was too much trouble. Would not hesitate to recommend Pawel and his colleage.

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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.

All exterior works undertaken no job to big or small with over 20 years experience professional workmanship is our key making costomer’s happy is our goal. Find us on Facebook goggle my builder bark checkatrade rated people and much more fully Insured

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Reviewed by Kevin on 25/11/2022

Very satisfied with the work. Would recommend .

Living in North London Self employed The work I do; Painting, Carpenter( kitchen, fixing the doors, wardrobe and shelves, wooden floors, all the wood works) Plastering.

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Reviewed by Russell on 11/2/2023

Done a great job fitting some new skirting boards, on am old house with lots of corners around fire places etc... Very friendly and helpful.

We are a well trusted company based in Newcastle what carry’s out all aspects of joinery to a very high standard. We have great 5* reviews not just for our excellent work but for our time keeping, polite, and do anything to help our customer. Thank you

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Reviewed by David on 30/12/2019

Great job done turned up as arranged. Fantastic quality of workmanship and even cleaned up after himself .Great price exactly what he estimated.Will definitely use his services again ?? .

We are a small award winning general building company with over 30 years experience. We cover all aspects of building work including kitchens, bathrooms, plumbing, tiling, rendering, plastering, carpentry and listed buildings.

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Reviewed by Rhiannon on 23/10/2018

Excellent work, highly recommend him, cleaned up after and work was professional and of excellent standard.

We are a small business based in Bedford, We specialise in all roofing and building work. We have been trading as a company for 9 years now, We are very reliable, competitive and take pride in what we do. All of our work is fully guaranteed.

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Reviewed by joe on 14/1/2019

I thought Jonathon did really good job. The whole process of quote to completion was really good as well. He said exactly what he was doing and when. I am also impressed with the quality of work. I would recommend him for any job. His attitude was excellent with no fuss.

Welcome to Valter K Construction. Why choose us? We are General Builders, Roofers, Ground workers (including Quality Driveways and Patios, Fencing and Turfing), Bricklayers, Painters and Decorators. We provide a complete building service from top to bottom. We provide a 10 year guarantee on all jobs. Valter K Construction carries Public Liability Insurance. No job is too small, or too large. We only use quality materials from well known manufacturers. All our work is guaranteed and we provide written estimates for all our projects. Call our team today for free help and advice.

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Reviewed by Cimi on 13/10/2020

Absolutely happy with the work Very friendly guys Thank you Valter for your amazing job

Brick top services There's only one way to build, the right way.

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Reviewed by Rukhsana on 1/2/2019

Ben was very cheerful and bubbly. He worked in cold weather and just got on with it. He came up with a problem but solved it quickly without fuss. Very positive, polite and genuine. Would definitely use again. Thank you Ben

Here at roberts construction swindon ltd , we are family based company who are 3rd generation plasterers nvq level 2 , also we do extensions, refurbishments ,plasterering , rendering, and Venetian plastering. we also specialise in Hmo's and PRC housing

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Reviewed by Andrew on 21/6/2021

Both Darren and Michael (and crew...) did a wonderful job converting our Garage into an outdoor room. Very efficient and always tided-up after themselves. Would definitely recommend!

Welcome to KP building contractors Ltd trading as KP Projects

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Reviewed by sunny on 11/6/2018

Great workmanship. I had previously hired Kam about two years ago for a loft conversion and extension at one of my other property. I'd lost his contact details. Very honest man. Thanks Rated People!

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Reviewed by Jason on 24/2/2012

Ken was by far the most professional builder that came round to quote for the work. He explained what would be required to complete the work. Including building regs and structural engineer requirements. Therefore we were pleased that ken's quote was slightly cheaper than the others we recieved. The work was completed to agreed timescales and a very high standard with minimal impact and fuss. I have no hesitation in recommending ken and will contact him first before posting a job for future planned work

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Reviewed by Anna on 1/12/2008

Phoned me to make an appointment to come give me a quote for the job. But never showed up so not very professional never phoned to say he wasnt coming. so wont be contacting them again

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Reviewed by Candice on 3/9/2008

Our quote was higher than others as we quoted to coat the stairs three times with a high quality varnish because they were in such a bad way, however the customer did not want to pay for this so we kindly matched the other quote, and this was only to put one coat of mid range varnish on. As with all previously painted low grade pine to achieve a good even finish you need to build on the layers and this customer did not want to pay for this. On finishing this job we had advised the customer that additional coats were needed and offered to do them at a reduced price. The flooring as mentioned by the customer is good and we also matched a lower quote for this.

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