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 Avon in October 2024
Requests for Basement renovation quotations in Avon in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in South West 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...
Weston-Super-Mare - BS23
Enquiry from: Ines P
Start Date: 1 to 3 months
total conversion. build floor, install insulation cavity walls, window, stairs,... are you the property owner: owner of the property property type: other how many rooms are currently within the basem...
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...
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:...
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...
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 - 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
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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.
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.
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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