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Find a local basement conversion specialist

Browse Cellar & Basement Conversion specialists

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

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All our work is carried out by seasoned builders, qualified specialists and managed by a qualified trader. We take pride in our user friendly approach and professionalism and always aim for a flawless finish.

Latest homeowner review

Reviewed by Michael on 21/11/2019

Professional and fast; highly recommended.

At Just Renovate, we are more than just decorators and painters. We have an eye for detail and keep ourselves updated with the latest industry trends. Choose us to make your house a home. Contact us today in Maidstone. Whether you're looking to renovate your office or get your home painted, you need painters and decorators who can bring your ideas to life. At Just Renovate, we can create designs that are a perfect blend of uniqueness and elegance. We have a wealth of knowledge and expertise in the industry and will ensure that you're more than happy with the final outcome. Please visit our website look for: justrenovateltd

Latest homeowner review

Reviewed by Jan on 2/12/2019

Excellent work. Would recommend to anyone and would use again

G and D building services. We have 30 years experience. Our projects have ranged from small works up to barn conversions. No job is too small. We are a very friendly company and offer advice when needed.

Latest homeowner review

Reviewed by Paul on 23/1/2019

Great from start to finish. David responded to my query quickly and came around to quote as planned. He was punctual (despite the snow) and completed the job to a high standard within a day, he even did a great job of cleaning up! He replaced my water damaged ceiling and installed new lighting, no hidden surprises and on budget. Highly recommend

Small company with over 12 years experience that undertakes all building works, operating on residential and commercial sites, references provided when required.

Latest homeowner review

Reviewed by Carey-Anne on 21/11/2019

Arben and Genc did an amazing job for us. They were quick to quote in a clear and professional manner, always on time, friendly and polite. We will definitely use them again.

We are a highly skilled team with over 10 year of experience, available for all tipe of jobs 24/7. Services available: - kitchen remodeling - new additions - flooring - tilling - skimming - roof repair - fiberglass roof - extensions - and more!

Latest homeowner review

Reviewed by Shailnder on 30/7/2019

Professional, polite, reasonable rates, quality work, very pleased.

P&P Building Services are a family run business, offering a broad range of building services to customers. P&P Building Services are fully qualified plasterers and damp proofing technicians, Also qualified in timber preservation treatment. P&P Building Services have over 25 years of experience in all areas of building and maintenance. You'll be sure that the P&P Building Services team work at a very high standard, are honest and professional throughout their work.

Latest homeowner review

Reviewed by Carl on 25/5/2019

Paul and his team were professional, efficient, knowledgeable and friendly. The right balance of banter and exactitude. A great job done. I highly recommend them.

Homeowner If you are considering having your damp and unusable cellar or your garage space converted into a luxury living space or just a dry storage area, The team at Creative Basements and Garage conversion specialists can help we can bespoke design a luxurious living space designed to meet all your needs

Latest homeowner review

Reviewed by John on 17/11/2019

My garage conversion is almost complete. I rarely if ever write reviews although on this occasion I felt compelled to do so. Stan and Phil have been fantastic. Work ethic top star. Punctuality superb. Work quality fantastic. Attention to detail outstanding. The guys are both professional and friendly in their approach to the job which was the icing on the cake really. Stan has kindly agreed to finish off a few bits in the house for me before moving on to their next project. I would highly recommend.

Magnifique Construction offers a friendly and bespoke service that is tailored to meet your needs and budget by offering a variety of professional building services including luxury custom home constructions, garden rooms, custom extensions, bespoke interiors and exterior. Our aim is to produce superbly constructed and well functioning, liveable/spaces designed/constructions that are built to last, also providing our clients with a stylish, comfortable and relaxed modern lifestyle. We believe spaces should be functional, joy-inducing, and above all, elevate everyday experience. Having a fully qualified team with more than 10 years experience we learned how to provide high quality services that include interior/exterior designs ,architectural drawings and engineering calculation . 3D modelling and presentation that include high quality rendering and the latest technology that give us the possibility of VR presentation where customer can feel the emotions using Virtual Reality . All this makes us being on top when it comes to construction/building industry

Latest homeowner review

Reviewed by nicola on 29/11/2019

Chose Magnafique Construction as best appraisal of situation/advice, and then in turn the best quote. On the day of the job, they turned up and just got on with it, and the result was a perfect floor - flooring of my choice, which was laid, after they had built a sub floor of the appropriate materials, on the existing uneven concrete base. On a personal note, I found them very professional to deal with - helpful and tidy.

= Interior design = - drylining. - Indoor plastering. - Tiling - all aspects. - Laminate & Solid wood flooring. - kitchens upgrades. - bathrooms (including plumbing ). - Carpentry, joinery. Following your dream house!

Latest homeowner review

Reviewed by Phil on 6/7/2018

Very impressed with Roberto who has done a very good job for us.Would definitely use his services again.

We are a friendly construction company aiming to provide an excellent service. We cover all aspects of domestic and light commercial work from bathrooms, kitchens to extensions with everything in between. We have plenty of references so feel free to ask

Latest homeowner review

Reviewed by Paul on 9/11/2017

All good. Diligent and good communications. Went out of his way to secure right roof tiles. Need to sort the brickie side of things out but we were v happy. Would use again.

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Cellar & Basement Conversion specialists - what you need to know

Basements and cellars are all too often missed opportunities, with the potential to add real value to your home. Conversions can unlock this potential, transforming underground spaces into useable rooms to suit your needs. Whether you’re looking for a guest room or granny flat, a larger kitchen or somewhere to let that gym equipment gather dust… a conversion may be the answer.

The precise nature of the conversion will depend on your plans for the space but regardless of its intended use, your new basement will need damp-proofing. Heating and ventilation systems must also be installed, to ensure the space is safe and comfortable.

Though many period properties will have basements, they are mostly cramped spaces intended purely for storage. Your builder may therefore need to dig down substantially to increase the head height. You will want to be sure your new basement isn’t claustrophobic and that any new rooms adhere to building regulations regarding minimum head height.

You may choose to extend your current basement beyond the original footprint of the house or building. With the right guidance, extending out beneath a garden can be a great way of maximising space. This may also allow your builder to incorporate light-wells into the design, which is an excellent way of introducing natural light into your basement. 

If there is no existing basement or cellar in your property, major excavation work will be necessary to create one from scratch. Along with any excavation, a new staircase will be added and your builder may also need to underpin any party walls.

Cost of cellar and basement conversion work

There are significant variables when it comes to costing – namely the extent of structural work required, access and ground conditions. The cost of damp-proofing, for example, will be dictated by the condition of your basement to begin with. If you’re looking at additional features, such as light-wells or bathrooms the extra work entailed will increase costs significantly.

For the most basic basement conversion, where no digging down or underpinning is required, it is advisable to budget £600-£1200 per square meter. If your basement floor needs lowering, costs will rise to between £1650 and £2200 per square meter. For basements created from scratch, quotes will be in the region of £2500 - £4000 per square meter.

The qualifications your tradesperson needs

Basement and cellar conversions can be carried out by reputable builders, often working in tandem with structural engineers.

Some builders will carry a card from the Construction Skills Certification Scheme. If your builder lists any specific qualifications it’s always a good idea to ask for proof of these before work begins.

There are various official trade bodies in the UK and it‘s advisable to check that your builder is registered with one of them – it’s not a necessity but is usually a good indication of how reputable they are. Each body has its own set of criteria, which must be met to qualify for membership.

You can find more detailed information about the different qualifications an experienced builder might have here

Planning permission for cellar and basement conversion jobs

Unless there is significant change to the external appearance of the building, planning permission is not usually required for basement or cellar conversions. This will obviously differ for listed buildings, or those in conservation areas.

You are likely to need planning permission where major excavation work is required to create a new basement, or where your basement is to serve as living accommodation. Further information can be found here

Insurance for cellar and basement conversion work

Public liability insurance is a requirement of any reputable tradesperson. This protects against any accidental damage to your home.

Questions you should ask your tradesperson

  • Do they have public liability insurance?
  • Do any of the planned adjustments require planning permission?
  • Does the basement design adhere to building regulations (namely ventilation / fire escape routes / ceiling height)?

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Recently completed jobs

Here's what's been happening in and around your area

this is a test job do not buy

this is a test job do not buy this is a test job do not buy

milking parlour conversion

conversion with staircase, fitting of doors and bricking up of doorways.

Change cellar

Small cellar is already converted but needs changing round so that there is a utility room and a study

Rework of Floor Joists for...

We are looking to 'rework' a staircase between the ground floor and basement of a Victoria Terrace. This will require adaptions to the floor joist to...

Repair/Redo Cellar conversion

We had a cellar conversion completed last year. We raised concerns whilst the work was being done that it wasn't being done correctly and now the...

Basement egress window

Hi. Trying to find out the cost/feasibility of putting a light well/egress window into my existing basement conversion so it classes as a bedroom

62sqm basement

Hi, we have a cellar that is already 2.1m head height in 2/3 of the area that needs the blinding removed and waterproof slab installed and an...

general building work

widen internal arch (lintel required) fit suntubes or skylight into kitchen fit underfloor heating in 3 rooms fit oak flooring tile kitchen floor fit...

Basement conversation

Full basement conversation. Drainage plastering

Cellar conversion into an...

Cellar conversion into an annexe. Plans already done.

How our service works

  1. Create a job - it's free

    We'll connect you with the right tradesmen, from over 30 different trades.

  2. Get quotes

    Up to 3 tradesmen can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.


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