Basement Flat, 48 Grosvenor Square, London, W1K 2HT

UPRN:10033601150Flat/MaisonetteBeds -Built -

LeaseholdCouncil Tax: -EPC: -

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoOwnership· freshRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

Basement Flat, 48 Grosvenor Square, London, W1K 2HT

HP Score

/ 100

Mixed

Verdict

yesterday

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate

Evidence

19 of 21 sources

Sale Estimate

£3,946,000

£3.16M - £4.74MLow

Estimate

£3.95M

Range

£3.16M – £4.74M

Rent Estimate (pcm)

£17,350

£16k - £19k

Monthly

£17,350

Yield

4.38%

Verdict

Derived from HomePortfolio scores

Basement Flat earns an INVESTIGATE rating with HP Score 61/100. Investment score 57/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (100/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)HM Land Registry sales matched to addressDefra strategic noise mapping, England Round 4 (Contains Defra data © Crown copyright and database right 2023-2024, Open Government Licence v3.0)Walk ScoreONS Census 2021Police.ukHM Land Registry company ownershipHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

61/ 100

Mixed

Investment Score

57/ 100

Moderate

100

Crime Score

100/ 100

Elevated

100

Walkability

100/ 100

Excellent

Transit & Bike

Transit 91Bike 74

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

asking price missing or outside scoring range
listing is 'Sold subject to contract' - sale already progressing, not an actionable opportunity

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£4,750,000

At the asking price

Monthly rent£17,350/mo

Evidenced range £15,950-£18,750

Interest rate5.4%

Loan to value75%

Cash required: £1,910,050
Net cash flow: -£4,020/mo
Cash on cash: -2.5%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.08 - below the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion

Property risk deep-dive →flood, subsidence, crime, environment - the full domain

Plan

Before you offer

1. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Every step above was generated from a specific gap or flag in the evidence - no generic advice, no invented tasks.

Valuation & Market

Sale Estimate£3,946,000

Rent Estimate (pcm)£17,350

Gross Yield4.38%

1y Growth-

3y Growth-7.1%

5y Growth+2.9%

10y Growth-0.5%

Last Sold Price£600,000 (1997-12-02)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseHigh

View Full Risk Report

Planning Activity

Recent Apps

0W1K 2HT

Approval Rate

-12mo

Development

low

26/07417/ADFULL
Details of a Landscape and Ecology Management Plan pursuant to Condition 16 of planning permission dated 28 March 2025 (RN: 24/06335/FULL).
Pending
26/07420/COGADF
Details of each proposed sculpture by way of drawings, photographs and artists CV pursuant to condition 3 of planning permission dated 30.09.2025 (RN:25/05296/COFUL)
Pending
26/07409/LBC
Provision of internally illuminated temporary Christmas decoration to front facade at ground floor level between 18th December 2026 and 9th January 2027 (Linked to 26/07429/ADV)
Pending

View Planning Timeline

Ownership

Corporate Ownership7%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change1997-12-02
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

18 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£45,172

Population Density-

Owner Occupied36%

Age Distribution

0-15 8%16-64 73%65+ 19%

View Area Profile

Schools Nearby

St George's Hanover Square CofE Primary School
0.2 mi
Good
Wetherby Senior School
0.4 mi
Inspected by ISI
London Park School Mayfair and London Park School Sixth
0.5 mi
Inspected by ISI
St Vincent's Catholic Primary School
0.5 mi
Inspected as St Vincent's Catholic Primary School (URN 101143) on 23 Nov 2023

2 of 4 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

48 Grosvenor Square
-
£5.60M
-
48 Grosvenor Square
-
£2.15M
-
48 Grosvenor Square
-
£4.22M
-
48 Grosvenor Square
-
£20k
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN