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See how verdicts work6-bedroom house · W1G 6BF
For saleListed 546 days
Opportunity summary
See Archie’s verdict, returns by strategy and what to check before viewing.
About
A beautifully presented and sympathetically restored Grade II listed mansion, situated on one of the most prestigious streets in Marylebone.
This graceful and elegant house comprises approximately 8,600 sq ft (799 sq m), with magnificently proportioned principal rooms, a grand staircase and the rare benefit of a lift.
There is a very attractive patio garden at the rear, and a spa on the lower ground floor with pool, steam room, sauna, plunge pool and gym.
Harley Street runs from Marylebone Road to Cavendish Square and the house is situated at the north end, conveniently located for the highly regarded amenities of Marylebone High Street and the wide open spaces of Regent’s Park Exterior Interior Location
Value & comps
No previous sales on record.
Returns
Set an offer; the calculator follows it.
Short-let restrictions apply
We're still gathering serviced-accommodation data for this area.
Archie refurb estimate: a Pro feature
0.0% below asking
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All investment calculators, property analyses, and AI-generated insights are for informational purposes only. Property investment carries risk and may result in financial loss. All calculations should be independently verified and you should consult with FCA-authorised financial advisers before making any investment decisions.
Past performance does not guarantee future results. Tax implications vary by individual circumstances.
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 135, Harley Street, London
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