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 Tower Hamlets in March 2025
Requests for Basement renovation quotations in Tower Hamlets in March 2025. 0% change from February 2025.
Requests for Basement renovation quotations in London County in March 2025. 0% change from February 2025.
The London Borough of Tower Hamlets is a London borough towards the east of the City of London and north of the River Thames. Covering a total area of about 7.63 square miles, it's within the eastern part of London and covers a lot of the conventional East End. The London Borough of Hackney lies towards the north of the borough whilst the River Lea forms the boundary with the London Borough of Newham towards the east. Around the other side of the Thames is the London Borough of Southwark towards the southwest, The London Borough of Lewisham towards the South, as well as the Royal Borough of Greenwich to the southeast. The River Lea also forms the boundary between these parts of London historically in Middlesex, with those formerly in Essex.
As outlined by population estimates created part way through 2014, the borough includes a permanent population of about 284015 individuals. Additionally, it contains a great deal of the redeveloped Docklands region of London, including West India Docks and Canary Wharf.
The borough hosts the world headquarters of a lot of global financial businesses, employing some of the highest paid workers in London. Additionally, a part of the Queen Elizabeth Olympic Park is in Tower Hamlets.
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London - E4
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A basement conversion. There is no existing basement. The house is built on a hill so I am planning on using the space under the existing elevated patio. with no need to build under the main house it...
London - E15
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Shopping for quotes to renovate my basement to a room.
Northolt - UB5
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knock down garage build a gran annexe flat
Hounslow - TW3
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Games room
Teddington - TW11
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Just need an indication of cost to see if feasible for us. Is it likely to get planning in this area for a basement? Size completely dependant on price and hat we could potentially afford!
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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.
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.
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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