6-bedroom flat · W1J 8NS
For saleListed 435 days
Opportunity summary
See Archie’s verdict, returns by strategy and what to check before viewing.
About
An enormous, 4,624 sqft / 429 sqm, first floor lateral apartment, laid out with upto Six bedrooms and Two or Three reception rooms.
Berkeley House is located on prestigious Hay Hill, just south of Berkeley Square and in the heart of Mayfair.
It is located approximately in the heart of Mayfair's private members clubs, midway between The Arts Club and Annabel's, and within 100m of Maison Estelle.
The property requires modernisation throughout, allowing the new owner or developer to personalise the space and create a standout luxury residence that meets modern standards and tastes, sparking your imagination.
Entrance Hall : Large Reception Hall : 2 Reception Rooms : Upto 6 Bedrooms : 5 Bath/Shower Rooms : Guest WC : Kitchen : Porter : Lift : EPC Rating C : Westminster Council Tax Band H Napier Watt Says One of the largest, lateral apartments available in Mayfair.
Leasehold : 25 March 2165 ie 140 years Westminster Council Tax Band H - EPC C Service Charge - £24,800 per half year inc
Value & comps
No previous sales on record.
Returns
Set an offer; the calculator follows it.
We're still gathering serviced-accommodation data for this area.
Archie refurb estimate: a Pro feature
0.0% below asking
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Deal
Properties like this can earn 2–3x BTL yields when converted to HMO, with retrofit costs around £10k/room. Sign in to see the full tier, yield projection, and cost breakdown.
Commercial properties like this can earn 30-50% higher yields when converted to residential under Class MA / Q / P / PA, with prior approval costing ~GBP 96/unit. Sign in to see the recommended route, yield uplift, and cost breakdown.
BRRR-suited properties can recycle 80-100% of investor capital on refi, leaving a high-yielding rental with most of the money out. Sign in to see the refurb cost stack, ARV projection, and refinance maths.
Detached + large garden = sub-division play. Pro tier unlocks the tier badge, plot size, uplift estimate, and regional land benchmark.
Short-lease flats trade at deep discount, but extending under the 1993 Act often costs far less than the discount. Pro tier unlocks the tier badge, premium breakdown, long-lease ARV and arbitrage maths.
See projected short-stay revenue vs a vanilla BTL for this property.
See real sub-let margins (HMO room rates & SA nightly rates) vs the landlord rent.
Area
Agent & docs
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FAQ
About Flat 10, Berkeley House, Hay Hill, London
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