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 Suffolk in October 2024
Requests for Basement renovation quotations in Suffolk in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in East Of England in October 2024. 0% change from September 2024.
Ipswich - IP4
Enquiry from: Jamie S
Start Date: Immediate
basement cavity membrane installed. mebrane installed to walls and floor. floor area 60m2 walls 2m high x 56m so 112m2 no drainage channels , just wall and floor membranes installed , ready for us to ...
Ipswich - IP1
Enquiry from: Mark C
Start Date: Immediate
convert existing cellar (about ***) into useable space. wall and floor finishing required plus new ceiling lining. are you the property owner: owner of the property property type: semi detached how ma...
Ipswich - IP2
Enquiry from: Emily B
Start Date: Immediate
we require quotes for the tanking/water proofing of a 3.5 x 2 meter cellar. cellar has good stairs, a water drain in floor and air vents to outside near ceiling. are you the property owner: owner of ...
Woodbridge - IP12
Enquiry from: Kath N
Start Date: Immediate
damp proof small cellar at property are you the property owner: relative of owner property type: terrace how many rooms are currently within the basement: 1 room how many rooms do you want to have in...
Haverhill - CB9
Enquiry from: Rob P
Start Date: Less than one month
mid terrace house. conversion of damp cellar to bedroom. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 1 room how many room...
Lowestoft - NR33
Enquiry from: Rachel B
Start Date: Immediate
2 cellar rooms to b converted time scale: 1-3 months please call to appoint are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: ...
Bury St. Edmunds - IP33
Enquiry from: Steve W
Start Date: 1 to 3 months
cellar conversion that needs the floor lowered and possibly a toilet installed. Time scale: 1-3 months Please call to appoint
Bury St. Edmunds - IP33
Enquiry from: Steve W
Start Date: 1 to 3 months
Cellar has been dry lined in the past but it was not done to a very high standard. The flooring would need to be dug out to raise the ceiling height. The window lighting needs renovating. The stairs a...
Felixstowe - IP11
Enquiry from: James M
Start Date: 1 to 3 months
Ground level taken down by 2ft, complete renovation, tanking needed. Time scale: 1-3 months Please call to appoint Time scale: 1-3 months Please call to appoint
Bury St. Edmunds - IP33
Enquiry from: Paul P
Start Date: Immediate
Basement needs modernising. Toilet installation, possible wa removal and RSJ installation and window replacement.
Ipswich - IP3
Enquiry from: Karl S
Start Date: Immediate
Damp proofing and full conversion of existing cellar in to a livable space. Approx 4m X 4m.
Ipswich - IP3
Enquiry from: K S
Start Date: Immediate
Homeowner Please contact to appoint *
Bury St. Edmunds - IP33
Enquiry from: Daniel L
Start Date: Less than one month
There ius a cellar under the house with stairs to it central to the house (so two rooms). There is damp that includes condensation. One wall is block brick the other flint and has earth behind it (a...
Bury St. Edmunds - IP33
Enquiry from: Bev B
Start Date: Immediate
A rough estimate for converting my cellar into a bedroom/sitting room
Bury St. Edmunds - IP33
Enquiry from: Edward B
Start Date: 1 to 3 months
Damp proofing and conversion of cellar to dry usable space
Woodbridge - IP13
Enquiry from: Edward K
Start Date: 1 to 3 months
thinking ofbuying in NR2 3HB GF apartment which needs a max size basement ext - i need a 10%+_ budget estimate - incl planning & building regs - for the work. More info on application to email
Stowmarket - IP14
Enquiry from: Tom A
Start Date: Less than one month
I have a cellar which is seperated into 2 rooms one of the rooms is newly built, it has electricity and 2 windows however the walls are untidy and I would like to make it into a useable space. Time sc...
Ipswich - IP4
Enquiry from: Mary F
Start Date: Immediate
We currently have two connected cellars in a grade 2 listed property. The cellars are centrally heated and fairly free from damp, but in need of a face lift. I don't think they can be clad due to the ...
Ipswich - IP4
Enquiry from: Zexian Q
Start Date: Immediate
My home has an old cellar, which was not in use for a long time. Now I want to do some refurbishment work for it, including floor, wall and some others. And it's going to be used as a storage space. I...
Bury St. Edmunds - IP33
Enquiry from: Steve M
Start Date: 1 to 3 months
Cellar approx 3 x 4 Mtrs to be converted into an en-suite shower/toilet bedroom, detailed plan can be provided Time scale: 1-3 months
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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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