Basement Conversion in Middlesex

Discover Basement Conversion Prices in Middlesex

Home > Extensions & Conversions Projects > Basement renovation > Middlesex

Average Basement renovation cost in Middlesex

Basement conversions fluctuate in cost depending on project scale, professionals hired and location. If your basement conversion doesn’t 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.

Average price per Basement renovation job in 2025

Avg. price low

Avg. price low
£30,000

Avg. price

Avg. price
£40,000

Avg. price high

Avg. price high
£46,000

£46500

£34875

£23250

£11625

£0

Prices based on actual Basement renovation costs for Middlesex, as reported by local LeadsDoWork members.

Basement renovation installation cost in Middlesex 2025

Labour cost £28,000
Material cost £10,000
Waste removal £2,000
Time frame: 1-6 months

Basement renovation searches in January 2025

Basement renovation Projects in Middlesex in December 2024

10,922

Requests for quotations in Middlesex in December 2024

0

Requests for Basement renovation quotations in Middlesex in December 2024. 0% change from November 2024.

0

Requests for Basement renovation quotations in Greater London in December 2024. 0% change from November 2024.

Source: Numbers calculated based on the search volumes in major search engines

Basement renovation searches in cities and towns near Middlesex December 2024

Middlesex

Middlesex can be found on the outskirts of Greater London and is amongst England's 39 traditional counties. It's the second smallest by area but still features a population more than two million. Even with a decrease in population right after the Second World War, regeneration assisted the area become great once more for the duration of the 1960s. Consequently, there is lots of houses post World War Two, all requiring upgrading to keep value and aesthetic appeal in the Middlesex County. For any property improvements you're thinking about, only use vetted specialists in your region to ensure high quality.

Looking for Basement renovation in Middlesex?

Get free quotes from local builders

Get free quotes

Similar Customer Enquiries for Basement renovation in Middlesex

09 Dec

Conversion | Basement

Enfield - EN2

Enquiry from: Dinko M

Start Date: Immediate

this is a new build house .the lower ground floor is a 3m deep basement .i need a full waterproofing solution with an insurance backed guarantee.

Post a similar request >

11 Feb

Conversion | Basement

Twickenham - TW1

Enquiry from: Nuria M

Start Date: Immediate

We recently did a cellar conversion and want to do the final half of the cellar to make it additional storage / living space. Time scale: Immediate Please call to appoint

Post a similar request >

28 Sep

Conversion | Basement

Northolt - UB5

Enquiry from: Alex D

Start Date: Immediate

knock down garage build a gran annexe flat

Post a similar request >

04 May

Conversion | Basement

Hounslow - TW3

Enquiry from: Sylvan G

Start Date: Immediate

01 May

Conversion | Basement

Sunbury-on-Thames - TW16

Enquiry from: Paul L

Start Date: Immediate

I am interested in a consultation regarding converting our existing basement into a liveable bedroom. It has two existing windows, which although small, allow in some natural light from the garden.

Post a similar request >

13 Feb

Conversion | Basement

Teddington - TW11

Enquiry from: Athanasia M

Start Date: Immediate

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!

Post a similar request >

04 Nov

Conversion | Basement

Wembley - HA9

Enquiry from: Raghad N

Start Date: Immediate

Basement conversion Time scale: 1-3 months

Post a similar request >

31 Oct

Conversion | Basement

Enfield - EN2

Enquiry from: Andrew S

Start Date: Immediate

Extend an existing basement Time scale: 1-3 months

Post a similar request >

17 Oct

Conversion | Basement

Edgware - HA8

Enquiry from: Osher K

Start Date: Immediate

Home owner Basement conversion required Time scale 1-3months Contact to Appoint *

Post a similar request >

27 Aug

Conversion | Basement

Harrow - HA3

Enquiry from: Rahul S

Start Date: Immediate

Demolition of detached garage and erection of a detached four storey, four bedroom dwellinghouse; including basement level,solar panel on roofslope, relocation of the vehicular crossover, formation of...

Post a similar request >

08 Jun

Conversion | Basement

Edgware - HA8

Enquiry from: Roger W

Start Date: Immediate

Convert cellar into basement Home owner Immediate Please call to appoint *

Post a similar request >

05 Jan

Conversion | Basement

Stanmore - HA7

Enquiry from: Denis L

Start Date: 1 to 3 months

I need a new basement renovation Homeowner Please contact to appoint

Post a similar request >

Local & reliable builders near me

Tell us about your basement renovation project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Middlesex

Get free, no-obligation local basement renovation quotes from 4 verified builders working in Middlesex.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

Would highly recommend

Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love LeadsDoWork it's a big part of my …

Love LeadsDoWork it's a big part of my Business I would recommend to anyone

FAQs

Does a converted basement need windows?

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.

How to convert a basement into living space?

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.

Are pumps used for basement conversions noisy?

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.

How to convert a basement into an apartment?

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.

Placholder Image

Other Top Projects in Middlesex

Customer Reviews

Overall rating:


Middlesex Basement renovation installers are rated 4.4 out of 5 based on 15 reviews of 136 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Basement renovation projects that have been connected with Basement renovation pros to help them. All Basement renovation contractors All Middlesex Basement renovation contractors

Are you a builder in Middlesex?

We can help you get more basement renovation work with our qualified job leads and boost your business.

Join today