Basement Conversion in Brentwood

Find Basement Conversion Prices in Brentwood

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Average Basement renovation cost in Brentwood

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 Brentwood, as reported by local LeadsDoWork members.

Basement renovation installation cost in Brentwood 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 Brentwood in December 2024

1,016

Requests for quotations in Brentwood in December 2024

0

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

0

Requests for Basement renovation quotations in Essex 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 Brentwood December 2024

The East of England is among the UK's most populated areas, with 5.8 million residents. The region includes the counties of Norfolk, Suffolk, Cambridgeshire, Essex, Hertfordshire, Bedfordshire and Suffolk, in addition to the unitary authority of Peterborough. It is the second largest region for size, providing a population density of 310 individuals per square kilometre. For any household developments you'd like undertaken in the East of England, make sure to work with a specialist firm in the region.

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Similar Customer Enquiries for Basement renovation in Brentwood

21 May

Conversion | Basement

Brentwood - CM14

Enquiry from: G

Start Date: Immediate

Do you offer a complete basement renovation service? We have a ground floor property in a converted Victorian building , We have approx 52 sq mtrs basement at 6ft height below the flat which we...

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08 Aug

Conversion | Basement

London - E12

Enquiry from: Selvi R

Start Date: Immediate

Cellar need damp proff wirk

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30 Aug

Conversion | Basement

London - E7

Enquiry from: Sami M

Start Date: Immediate

Small amount of damp has risen due to rain water outside.

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22 Oct

Conversion | Basement

London - E7

Enquiry from: Musarat R

Start Date: 1 to 3 months

I would like to convert my cellar so I can use it as an extra space. I would like some shelving and to build it in to a small gym. Currently it is full of boxes from when I moved in and I am in the pr...

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09 Mar

Conversion | Basement

London - E4

Enquiry from: Karen P

Start Date: Immediate

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...

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01 Feb

Conversion | Basement

London - E11

Enquiry from: Mark G

Start Date: Immediate

The site is backland with 2 x 4 bed houses with 100m2 each basement. Water table is @2.8m, basement floor height 2.6m pref Access is limited to approx 2.0m high x 3m wide. We are at planning ...

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29 Jun

Conversion | Basement

London - E11

Enquiry from: Francine M

Start Date: 1 to 3 months

Like to know costing of having my cellar converted into living space. Already have a cellar but can't quite stand up fully in it so will need a dig out. Thank you look forward to hearing from you. ...

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22 Feb

Conversion | Basement

Ilford - IG1

Enquiry from: Steve P

Start Date: Immediate

I already have a cellar and I am wondering if we can convert to create another habitable room or two. Would like advice and quotes

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19 Dec

Conversion | Basement

Ilford - IG4

Enquiry from: Abdur R

Start Date: Immediate

I want to build A double bed room with open plan kitchen at the rear garden under the conservatory 25 feet x 20 feet, in a 4' feet slopping down garden

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09 Nov

Conversion | Basement

London - E11

Enquiry from: Zahid A

Start Date: Immediate

basement conversion to living accommodation via external access (will be easier to communicate via email than phone) Time scale: 1-3 months

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24 Jul

Conversion | Basement

London - E11

Enquiry from: Sofie E

Start Date: 1 to 3 months

We have recently discovered a basement/cellar under our flat which we are hoping to convert into living space. The space is ~25m2 and the head height is currently 160cm so further excavating would b...

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16 Apr

Conversion | Basement

London - E6

Enquiry from: Frances C

Start Date: 1 to 3 months

cellar tanking or submersible pump system fitted Homeowner Please contact to appoint

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17 Feb

Conversion | Basement

London - E11

Enquiry from: Rebecca R

Start Date: 1 to 3 months

We have a current basement conversion where our living room and kitchen Homeowner Please contact to appoint

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FAQs

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.

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.

Is a basement conversion worth it?

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.

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Brentwood Basement renovation installers are rated 4.2 out of 5 based on 8 reviews of 61 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 Brentwood Basement renovation contractors
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