Basement conversions fluctuate in cost depending on project scale, professionals hired and location. If your basement conversion doesnât need any construction work, then it should cost relatively little. However, the majority of projects at least need damp proofing and water proofing work, if not insulation, heating, electrical work and more. This means that even smaller basement conversion projects are still relatively expensive. The average UK cost ranges from £30,000 - £50,000.
| Avg. price low | Avg. price low |
|---|---|
| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£46500
£34875
£23250
£11625
£0
| Labour cost | £28,000 | |
| Material cost | £10,000 | |
| Waste removal | £2,000 |
Requests for quotations in Bath in October 2024
Requests for Basement renovation quotations in Bath in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in Avon in October 2024. 0% change from September 2024.
Bath - BA1
Enquiry from: Stuart W
Start Date: 3+ months
small cellar 500 sqft ish. previously tanked (4 years ago) by local builder with the aim that the cellar would then be converted for use as a utility room and storage space. the cellar has new plumbin...
Bath - BA1
Enquiry from: Lindsey C
Start Date: 1 to 3 months
converting the cellar into a usable family room. it has already been tanked. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement:...
Bath - BA1
Enquiry from: Maria J
Start Date: Immediate
hi, we are considering lowering the basement and to add a 2m external extension to the house in bath, somerset. i am including the current floor plan (model 1) and how we wish the floorplan (model 2)...
Bristol - BS3
Enquiry from: Charlie K
Start Date: Immediate
hello, my wife and i are in the process of buying a house in the windmill hill area of bristol and one of the main areas of concern that has come up on our survey is that the basement area has had a ...
Bristol - BS3
Enquiry from: Charlie K
Start Date: Immediate
tanking and damp-proofing (including repairs to any damage found) (maybe) lightwells and ventilation (potentially) bathroom fittings and mains water connection for washing machine are you the propert...
Bristol - BS6
Enquiry from: Joe L
Start Date: Immediate
looking to remove extra soil from the basement and tank as per architects drawings and additional groundworks for rear extension as the rear of the basement is not underground just the front of the ba...
Bristol - BS6
Enquiry from: Richard B
Start Date: 1 to 3 months
i have a large cellar although it can be entered at ground level and the front has walls that are at ground level but with the slope the back is underground. i am looking for three large rooms possi...
Bristol - BS3
Enquiry from: Ashleigh T
Start Date: Immediate
want to turn the cellar in to a fully self contained studio apartment. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 2 roo...
Bristol - BS3
Enquiry from: Ashleigh T
Start Date: Less than one month
hi, in the process of buying a building in bedminster and it has a cellar that i would like converted in to somthing like a 'granny annex' or studio apartment. i'd like to get a quote so i can start ...
Bristol - BS6
Enquiry from: Rachael H
Start Date: Immediate
Cellar conversion, underpinning of house, excavation etc
Bristol - BS8
Enquiry from: Louise Y
Start Date: Immediate
I have an existing cellar which has some damp issues, there is also a large coal hole which I would be interested in brining into the cellar. I would also like to scope out the possibilities of diggin...
Bristol - BS2
Enquiry from: Adam B
Start Date: Immediate
~70m2 basement flat in need of renovation. Waterproofing the whole flat with correct drainage and sump pump system. Removing earth up to shoulder height from 3 walls around the flat to waterproof exte...
Bristol - BS4
Enquiry from: Nick C
Start Date: Immediate
Basement dig out
Bristol - BS3
Enquiry from: Peter G
Start Date: Immediate
Digging out cellar/basement: Convert medium sized cellar into usable room or separate flat. Cellar height is currently between 1 to 1.5 metres, stretches under entire width of house (8 metres). Want ...
Bristol - BS3
Enquiry from: Amy T
Start Date: Immediate
We have planning permission for a 2 story basement/ground floor extension. We would like you to quote for the work. Time scale: 1-3 months
Bristol - BS4
Enquiry from: Mark S
Start Date: Immediate
I am planning to develop an additional floor/basement for our terrace house in Bristol. I have plans and a structural report and would like to obtain a quote for completion of the work which includes ...
Bristol - BS3
Enquiry from: Katie B
Start Date: 3+ months
Home Owner The cellar is underground at the front of the house, garden level at the back. We need to excavate the floor to give more headroom, possibly underpinning required. Then damp proofing and s...
Bristol - BS8
Enquiry from: John B
Start Date: 1 to 3 months
Homeowner Cellar requires tanking Supplied and fitted 1-3 months Please contact to appoint *
Bristol - BS8
Enquiry from: John B
Start Date: 1 to 3 months
Homeowner Cellar requires tanking Supplied and fitted 1-3 months Please contact to appoint *
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Whether a basement is worth converting depends on your location and how much work it requires.
A basement conversion can be a great way to add space to your home, and can raise your property value. However, it can also be one of the most expensive ways to do this, so if there’s a possibility to extend your property, or convert a loft or garage, it’s worth considering this first.
You should also compare how much your basement conversion will cost with the amount it could raise your property value by. In some areas, a quality basement conversion could earn you money in the long run, but in others it’ll only cost you. If you’re planning on staying in your property for a long time this might not matter to you, but if it’s not your forever home then it’s an important thing to think about.
In some cases, it’s possible to convert a basement into an apartment. This can be a great way to incorporate an additional dwelling into your property and increase its value. However, converting a basement into an apartment can be quite expensive and time-consuming.
As with any type of dwelling, you’ll need to think about basic things like access, damp proofing, ventilation, insulation, heating, electrics, plumbing, lighting and décor. If you’re planning on extending your basement, then you’ll also need to ensure that your property is sufficiently supported.
It’s a good idea to consult a professional, like a basement conversion building specialist, to find out how feasible your project is before you go ahead with it.
The best way to go about converting a basement depends on its current condition and what you’d like to use it for.
If you’re happy with its size and structure, and just want to turn it into useful storage space, then your project shouldn’t be too complicated. You’ll simply need to make sure it’s damp proof and waterproof – either by fitting tanking or a cavity drain membrane with a sump and pump. You may also need to invest in new flooring, fit basic lighting, and plaster and paint the walls and ceiling.
If you’d like to turn your basement into living space, then you’ll need to think about ventilation, insulation and heating. If this involves creating a kitchen or bathroom, you’ll also need to incorporate plumbing.
If you want to extend your basement, add lightwells, or fit windows and a sunken garden, this makes things much more complicated. You’ll probably want to hire an architect or basement conversion building specialist to help you with the design and planning, and you’ll need a structural engineer to help you ensure your property is sufficiently supported.
If your basement has a cavity drain membrane, it’ll need a pump to move water away from the exterior of your basement and prevent flooding.
Sump pumps can be noisy, but they don’t have to be. Generally, if you have a well-designed pump that’s installed correctly, you shouldn’t find it a problem. For best results, hire a skilled, experienced professional to supply and install your drainage system.
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