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Belsize Park Basement Conversion Experts | Belsize Square

Expert basement conversion from HAMPSTEAD RENOVATIONS - property renovation company in Hampstead, serving Belsize Square since 2010.

Only 0.6 miles from Belsize Square

Get a basement quote Call 07459 345456

4.9

Google Rating

14+

Years Experience

2hr

Response Time

🏠

Premium Property Image

Free Quote

No obligation assessment for your project

Why Choose Us for Basement Conversion?

Unlock hidden space beneath your home with a professionally converted basement. As the leading property renovation company in Hampstead, our team is just 0.6 miles from Belsize Square, meaning we can respond quickly when you need us. Some mansion blocks have basement potential depending on building configuration.

No garden space lost

Adds significant value

Creates flexible space

Often no planning needed

Premium waterproofing

10 year guarantee

Startingfrom £50,000 for basement conversion

How It Works

Get in Touch

Call us or request a quote online. We'll discuss your basement conversion needs.

Free Assessment

We'll survey your Belsize Square property and provide a detailed, no-obligation quote.

Expert Work

Our certified team completes the work to the highest standards.

Quality Guarantee

10 year waterproofing guarantee. Your satisfaction is guaranteed.

Belsize Square

Belsize Park, NW3

Local to Belsize Square

We're based at Unit 3, Palace Court, 250 Finchley Road, just 0.6 miles from Belsize Square. That means no long waits – we can be with you quickly when you need us.

0.6

Miles away

~15

Min drive

2hr

Response

About Belsize Square

Area: Belsize Park, Camden

📮Postcode: NW3

🏛️Nearby: Belsize Village

🚇Transport: Belsize Park Underground

Get Directions from Our Office

Why Choose Us?

We're committed to delivering exceptional service with complete peace of mind.

Only 0.6 miles away

We're local to Belsize Square

Basement Waterproofing Association

Industry accredited

10 year waterproofing guarantee

Work guaranteed

Fully Insured

£5m public liability

Basement Conversion Reviews in Belsize Park

See what our Belsize Park customers say about our basement conversion services.

"Excellent basement conversion work on our mansion block. The team was professional, tidy, and completed the job to a very high standard. Highly recommended for anyone in Belsize Park."

Sarah W.

Belsize Park • February 2025

Basement Conversion

"After several quotes, we chose HAMPSTEAD RENOVATIONS for our basement conversion project. Best decision we made - quality work, great communication, and they respected our mansion block's character."

Matthew T.

Belsize Park • January 2026

Basement Conversion

"Used HAMPSTEAD RENOVATIONS for basement conversion and couldn't be happier. They arrived on time, explained everything clearly, and the price was fair. Will definitely use again."

Jonathan R.

Belsize Park • July 2025

Basement Conversion

4.9

Average rating from 200+ Google reviewsView all →

Basement Conversion FAQs for Belsize Square

Common questions about basement conversion in Belsize Park.

Simple conversions of existing cellars often don't need planning. New excavations typically require permission and structural approval.

We use cavity drain membrane systems with sump pumps, providing guaranteed waterproofing that manages any water ingress.

Popular uses include home offices, gyms, cinemas, playrooms, guest suites, and wine cellars. Building regs apply for habitable rooms.

Absolutely. We've worked on many mansion block properties throughout Belsize Park and understand the specific requirements of homes in this area.

From our base at Unit 3, Palace Court, 250 Finchley Road, we can typically reach Belsize Square within 30-45 minutes in normal traffic. For emergencies, we aim for a 2-hour response.

Still have questions? We're here to help.