Main image: The 12-metre pool at Amberwood House
The Deep End: Avoiding headaches in basement building
Two very different mega-basement projects in Surrey and Knightsbridge demonstrate how these types of schemes come with their own unique set of factors, write Emma Shipp & Deborah Sharples...
Written by
Deborah Sharples & Emma Shipp
Partner and Head of Real Estate & Partner at Hewitsons at
Hewitsons
Deborah is a Partner and the Head of Property (Planning & Environment law). She deals with both contentious and non contentious matters and regularly appears as an advocate. Deborah has over twenty eight years experience in the fields of planning and environmental law and advises a range of clients including developers and other businesses, public bodies, charities and private individuals in both a rural and an urban context.
What to read next
In Pictures: The resurrection of Piccadilly’s Cambridge House
A tour of PDP London's grand plans for one of PCL's most significant luxury development projects: the transformation of the former In & Out Club on Piccadilly into the Cambridge House Hotel & Residences.
By PrimeResi
A hole of your own: The lowdown on building basements in the post-iceberg age
Figures out earlier this month suggest the days of the mega-basement are behind us in Prime Central London, but what should those still intent on attempting a subterranean project know?
Beyond the eco-conscious affluent: Is there a green premium for new homes?
Consumer sentiment is increasing towards more sustainable "green" homes, say Lucy Greenwood & Patrick Eve of Savills, but only larger homes achieve a "green" premium.
Companies in this article
HewitsonsMost read
DDRE reveals 2026 sales figures; adds four new advisors
Persephone Rose, Helena Barnett-Lonergan, Ross Parker & Tommy Moore have joined Daniel Daggers' luxury brokerage.
By PrimeResi
Independent buying agents launch invitation-only alliance
New network aims to promote higher standards and make it easier for consumers to find experienced buy-side advisers.
Mid-year deal review: 25 standout luxury property sales from H1 2026
PrimeResi's snapshot of eye-catching transactions from the first half of the year, from record-breaking mansions to trophy penthouses.
‘A genuine London icon’: Extraordinary Regent’s Park building offered with development potential
Originally built as a major visitor attraction, agents say The Diorama 'represents a truly generational opportunity' to create 'a private headquarters, cultural destination, world-class residence or legacy…
By PrimeResi
In Pictures: Touring a brand-new townhouse opposite Harrods, asking £14.4mn
Agents are marketing the first of five newly completed freehold homes on Lancelot Place; PrimeResi took a look around.
‘The product has to work harder than ever’: Dean Main on developing, managing & future-proofing super-prime homes
The Rhodium and Henigman boss gives PrimeResi the inside track on how top-end demand is shifting in London - and reveals what separates the very best schemes from the rest.
‘One of the most beautiful houses in Oxfordshire’: ‘Bohemian sanctuary’ with romantic roots seeks £14.25mn
Newington House was built in the style of an Italian Palazzo, and later became something of a hub for literary high society.
By PrimeResi
‘One of the most exclusive private islands in the world’ seeks $100mn with mega-mansion potential
In Pictures: This 75-acre tropical enclave was developed into a lavish retreat by Brazil's 'Michelangelo of the scalpel' in the 1970s.
By PrimeResi
Black Brick flags big shifts in buyer behaviour across Prime London
Buying agency's H1 data shows houses overtaking flats, suburban neighbourhoods outpacing central London and off-market deals becoming increasingly dominant.
Luxury hospitality gurus launch branded resi consultancy
'The gap between brand promise and resident experience is one of the most consequential — and least visible — challenges in branded residences today,' says Moricon co-founder Sebastian Moritz.
By PrimeResi
LATEST ARTICLES
High-profile agent Tangney launches ‘modern private office’
Siân-Louise Tangney's new venture, Key Privé, has already chalked up a £200k-a-month off-market deal in Ascot.
Tom Bill: Prime market braces for another summer of speculation
Knight Frank's UK resi research boss unpacks the latest data, political noise and what it all means for London's high-end housing market.
By Tom Bill
Prime property price declines accelerate in ‘strong buyer’s market’
Savills expects 'increasingly cautious' London & regional top-ends to remain price sensitive in H2.
By PrimeResi
‘Lack of data’ casts doubt on High Value Council Tax Surcharge
Zoopla suggests around two in five homes worth more than £1.5mn 'have never had a sale recorded by the Land Registry.'
By PrimeResi
Global trophy homes go under the hammer in Mayfair
Concierge Auctions said £139mn in bids were placed during its latest London global sale at The Connaught, as buyers competed for homes from across the US and Europe.