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 Bristol in October 2024
Requests for Basement renovation quotations in Bristol in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in Avon in October 2024. 0% change from September 2024.
Bristol - BS35
Enquiry from: Cotswold T
Start Date: Immediate
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Bristol - BS16
Enquiry from: Alex M
Start Date: Immediate
interested in discussing a quote for the creation of an open plan kitchen/dining/living area on the side of an 18th century stone cottage in the stapleton area of bristol. the room floor will be below...
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 - BS15
Enquiry from: Jessica B
Start Date: Immediate
there is an existing basement under the house, we want to convert it to bedrooms and a bathroom. will require digging down to create hight and significant underpinning. are you the property owner: own...
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 - BS36
Enquiry from: A
Start Date: Immediate
Conversion of existing basement 9.3M by 3.5M (estimate) Will require a bit of digging and will need to go below the natural water line. Installation of internal staircase (can be priced seperatly)
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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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.
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.
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.
Windows or lightwells can be a great way to introduce natural light into your basement, making it a more valuable, enjoyable space. However, they’re not always an essential requirement.
It’s important for your basement conversion to meet ventilation and fire safety building regulations. Windows can be a good way to do this, but they’re not the only option. Stack or mechanical ventilation, or ensuring that stairs up from your basement connect to an exit can be a good alternative.
So, while windows can be a great asset to your basement conversion, if you can’t afford them or they’re not structurally feasible, you can still create a basement conversion without them.
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