Basement Conversion in Hampshire

Find Basement Conversion Prices in Hampshire

Home > Extensions & Conversions Projects > Basement renovation > Hampshire

Average Basement renovation cost in Hampshire

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 2026

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 Hampshire, as reported by local LeadsDoWork members.

Basement renovation installation cost in Hampshire 2026

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

Basement renovation on Google in Hampshire

Google searches that showed Local Quotes, 19 July to 16 October 2026

279

Searches that showed our Basement renovation page for Hampshire

13,622

Searches that showed one of our pages for Hampshire, all services

Source: Google Search Console, the number of times our pages appeared in Google search results. It counts searches that showed the page, not quote requests.

Basement renovation searches near Hampshire, 19 July to 16 October 2026

3

Searches that showed our page for Winchester

Hampshire

The southern coast county of Hampshire is easily the most inhabited ceremonial county in Britain, with previous capital of Great britain, Winchester, as the county town. Hampshire is the largest county in southeast England and holds a large population well over 1.7 million, rated fifth in Britain. Despite this, Hampshire merely has a population density of 1,200 per square mile. Major settlements in the county consist of Portsmouth and Southampton, both lying on the British coastal line. Get the most from your property improvements and boost property value with reputable trade specialists in Hampshire.

Looking for Basement renovation in Hampshire?

Get free quotes from local builders

Get free quotes

Similar Customer Enquiries for Basement renovation in Hampshire

07 Sep

Basement Conversion

Southsea - PO4

Enquiry from: Matt T

Start Date: Immediate

Existing cellar walls and ceiling to be replaced with sufficiently damp proof materials, removing any existing damp brickwork. Converting the space into a usable, habiltable room. Replacement of exist

Post a similar request >

04 Aug

Basement Conversion

Southsea - PO4

Enquiry from: Matt T

Start Date: Immediate

Turn a cellar/basement (that is not too damp) in a 1890s built family home into a livable, secure office/room

Post a similar request >

Advertisement

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 Hampshire

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

Hire with confidence

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

Our reviews

Average

Its nice that the information neede ...

Its nice that the information needed is all in one place.

it was easier to put in a request t ...

it was easier to put in a request then companies can conatct direct.. only one company came forward but it saved me trawling the net for hours ..

Excellent service, they found us a ...

Excellent service, they found us a great company to provide our new Conservatory.

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.

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 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.

Basement renovation

Other Top Projects in Hampshire

Customer Reviews

Overall rating:


Hampshire Basement renovation pros are rated 4.3 out of 5 on average: 10 rated pros, 43 reviews, of 57 pros covering the area.
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 Hampshire Basement renovation contractors

Are you a builder in Hampshire?

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

Join today