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 Kent in October 2024
Requests for Basement renovation quotations in Kent in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in South East in October 2024. 0% change from September 2024.
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Tunbridge Wells - TN1
Enquiry from: Roger B
Start Date: Immediate
homeowner conversion basement please call to appoint
Ramsgate - CT11
Enquiry from: Mark J
Start Date: 1 to 3 months
need basement complete overhaul and new floor joists and steels above. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 1 room...
Gillingham - ME7
Enquiry from: Oliver P
Start Date: Immediate
current basement needs ventilating, and then pipes/electrics need re routing, current space needs staircase widening and then finishing - flooring, walls and lighting. we do not want to drop the floo...
Gillingham - ME7
Enquiry from: Ankit D
Start Date: Less than one month
basement conversion to en-suite bedroom do you have an architect or planning permision: none do you require a plumber: yes do you require an electrician: yes would you consider an easy payment plan: y...
Dartford - DA1
Enquiry from: Karen C
Start Date: Less than one month
cellar conversion into kitchen are you the property owner: owner of the property property type: detached how many rooms are currently within the basement: 1 room how many rooms do you want to have in ...
Ramsgate - CT11
Enquiry from: Angeline S
Start Date: Immediate
add kitchen and bathroom in basement are you the property owner: owner of the property property type: semi detached how many rooms are currently within the basement: 2 rooms how many rooms do you want...
Bromley - BR1
Enquiry from: Rob T
Start Date: Less than one month
basement conversion, i have a basement under my house, total area 75 sq meters, you can stand in 2 thirds 4 ft in the rest, rear door entrance, door at front for conveyor belt, i have planning but no...
Gillingham - ME7
Enquiry from: Ben A
Start Date: Immediate
i am looking to get a quote for my basement conversion. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 3 rooms how many room...
Bromley - BR1
Enquiry from: Rob T
Start Date: Less than one month
basement conversion, i have a basement under my house, total area 75 sq meters, you can stand in 2 thirds 4 ft in the rest, rear door entrance, door at front for conveyor belt, i have planning but no...
Rochester - ME1
Enquiry from: Dave H
Start Date: Less than one month
hello, i'm looking into options for a basement conversion from a victorian cellar to an office/reception space. main concerns would be damp proofing the space, replacing the old window and frame, and...
Bromley - BR1
Enquiry from: Rob T
Start Date: Less than one month
basement conversion, i have a basement under my house, total area 75 sq meters, you can stand in 2 thirds 4 ft in the rest, rear door entrance, door at front for conveyor belt, i have planning but no...
Gillingham - ME7
Enquiry from: Ben A
Start Date: Immediate
i am looking to get a quote for my basement conversion. are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 3 rooms how many room...
Bromley - BR1
Enquiry from: Rob T
Start Date: Less than one month
basement conversion, i have a basement under my house, total area 75 sq meters, you can stand in 2 thirds 4 ft in the rest, rear door entrance, door at front for conveyor belt, i have planning but no...
Rochester - ME1
Enquiry from: Dave H
Start Date: Less than one month
hello, i'm looking into options for a basement conversion from a victorian cellar to an office/reception space. main concerns would be damp proofing the space, replacing the old window and frame, and...
Bexley - DA5
Enquiry from: David V
Start Date: Immediate
require damp proofing, tanking and rebuild of 'window' area. new/altered access/ steps. are you the property owner: owner of the property property type: terrace how many rooms are currently within the...
Chatham - ME4
Enquiry from: Terrie D
Start Date: 3+ months
the cellar needs tanking i just want to find out how much it cost are you the property owner: owner of the property property type: terrace how many rooms are currently within the basement: 1 room how ...
Chatham - ME4
Enquiry from: Fatih A
Start Date: Immediate
2 m. height 6m x 6m basement room.
Maidstone - ME15
Enquiry from: Gemma S
Start Date: 1 to 3 months
the basement has been converted already but still damp. time scale: 1-3 months please call to appoint
Maidstone - ME14
Enquiry from: Terry R
Start Date: 1 to 3 months
we're looking to purchase a house which needs the cellar tanked and converted to a useable space and toilet facilities. there is access via the house, windows, electric. we're at property on wedne***...
Maidstone - ME14
Enquiry from: Leyla P
Start Date: Less than one month
I have an existing Victorian cellar that I would like to convert into a proper room.
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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.
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.
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.
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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