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 Hertfordshire in October 2024
Requests for Basement renovation quotations in Hertfordshire in October 2024. 0% change from September 2024.
Requests for Basement renovation quotations in East Midlands in October 2024. 0% change from September 2024.
Watford - WD17
Enquiry from: Thomas H
Start Date: Immediate
currently working out what the indicative cost would be to dig down in the basement which is currently 6 foot, to enable it to meet building regs and be counted as a second bedroom. so looking to get...
Watford - WD17
Enquiry from: Tomas H
Start Date: Less than one month
basement to be converted into a living room are you the property owner: relative of owner property type: semi detached how many rooms are currently within the basement: 1 room how many rooms do you w...
St. Albans - AL1
Enquiry from: Ketan S
Start Date: Immediate
Basement tanking - 4m x 3M roughly, height is around 6 ft.
St. Albans - AL4
Enquiry from: Sam S
Start Date: Immediate
cellar conversion - existing waterproofing has been carried out, but the room is not a proper 'room.' it is a standard victorian terraced house with a 12ft x 12ft cellar are you the property owner: o...
Watford - WD18
Enquiry from: Pretti P
Start Date: Immediate
we have a basement that we do not use. not sure exactly what is needed so an onsite visit would be appreciated are you the property owner: owner of the property property type: semi detached how many r...
Tring - HP23
Enquiry from: Sanam S
Start Date: Immediate
i am looking to rent a commercial property that has a basement which is large enough to convert into a room that can be used at full height. i am interested in ventilation for this. this might be a li...
Berkhamsted - HP4
Enquiry from: Mark F
Start Date: Immediate
6m D x 7m W excavation in rear harden, not below existing house, to create a 3 room basement with extension over
Watford - WD19
Enquiry from: John C
Start Date: Immediate
basement currently fittrd out.wish to install ensuite wc and wash basin for use by disabled member of the family (mobility issues) are you the property owner: owner of the property property type: othe...
Watford - WD19
Enquiry from: John C
Start Date: Immediate
basement currently fittrd out.wish to install ensuite wc and wash basin for use by disabled member of the family (mobility issues) are you the property owner: owner of the property property type: othe...
Watford - WD17
Enquiry from: Shaan P
Start Date: Immediate
basement conversion applying for permission to get it eligible for habitable area are you the property owner: owner of the property property type: terrace how many rooms are currently within the basem...
Royston - SG8
Enquiry from: David M
Start Date: Immediate
Tanking system may be failing. Would like an assessment, and if it is confirmed as in need of repair, a selection of priced options.
Hemel Hempstead - HP1
Enquiry from: Courtney B
Start Date: Immediate
we will need to have the cellar dug down roughly 43cm to bring the cellar floor in line with the rest of the lower ground floor. we would also like to remove (if possible) the additional concrete and ...
Hemel Hempstead - HP1
Enquiry from: Courtney B
Start Date: Immediate
we will need to have the cellar dug down roughly 43cm to bring the cellar floor in line with the rest of the lower ground floor. we would also like to remove (if possible) the additional concrete and ...
Ware - SG12
Enquiry from: Alexandra P
Start Date: Immediate
Remove existing old waterproofing in basement (bare bricks walls in 2 cupboards) and tank basement properly for future use as bedroom and current use as office and home cinema.
Berkhamsted - HP4
Enquiry from: Michelle H
Start Date: Immediate
Quote on basement conversion
Hemel Hempstead - HP1
Enquiry from: Philip W
Start Date: 3+ months
We are looking at the possibility of making our basement a utility room. It would need damp proofing and water and waste added to it. The ceiling is already low (I can just stand up straight in at and...
St. Albans - AL3
Enquiry from: Maria Z
Start Date: Immediate
We have a very small house and need more living space. We can only consider a basement as we are not allowed to go up or out. The basement area would be for 20sq m ca. Thank you. Regards Maria
Berkhamsted - HP4
Enquiry from: Tom R
Start Date: Immediate
Partial excavation of basement and underpinning and structural slab/retaining walls to rear extension
St. Albans - AL3
Enquiry from: Mary G
Start Date: Immediate
Conversion of current cellar space into usable area - 3.96 x 2.90m.
Bishop's Stortford - CM23
Enquiry from: Giuseppe C
Start Date: Immediate
The property currently does not have a basement. I would like to install one roughly 5m x 4m and 2.5m in height. Stairs will need to be extended down. The building is Grade 2 listed however the listin...
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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.
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.
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.
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