Flat 1, 8 Whistler Square, London, SW1W 8BW

UPRN:10033644247Flat/Maisonette2 bedsBuilt -

LeaseholdCouncil Tax: Band HEPC: B (82)

Data freshness:Listing· freshPrice Paid· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021

Flat 1, 8 Whistler Square, London, SW1W 8BW

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

18 of 21 sources

Sale Estimate

£3,973,000

£3.18M - £4.77MLow

Estimate

£3.97M

Range

£3.18M – £4.77M

Rent Estimate (pcm)

£17,100

£16k - £19k

Monthly

£17,100

Yield

2.16%

Verdict

Derived from HomePortfolio scores

Flat 1 earns an INVESTIGATE rating with HP Score 67/100. Investment score 85/100 reflects strong fundamentals. Crime intensity is elevated. Walkability is excellent (95/100). 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 SourcesEPC RegisterPortal listingsOfcom Connected NationsMarket 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

67/ 100

Mixed

Investment Score

85/ 100

Excellent

100

Crime Score

100/ 100

Elevated

Walkability

95/ 100

Excellent

Transit & Bike

Transit 86Bike 77

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

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£9,500,000

At the asking price

Monthly rent£17,100/mo

Evidenced range £15,700-£18,500

Interest rate5.4%

Loan to value75%

Cash required: £3,905,050
Net cash flow: -£20,224/mo
Cash on cash: -6.2%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.53 - 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£3,973,000

Rent Estimate (pcm)£17,100

Gross Yield2.16%

1y Growth-

3y Growth+3.4%

5y Growth+0.4%

10y Growth+2.8%

Last Sold Price£5,325,000 (2020-01-10)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

1SW1W 8BW

Approval Rate

-12mo

Development

low

26/07386/ADFULL
Details of Window, including section drawings showing the glazing bars; Door, including section drawings showing the glazing bars; Awning; pursuant to condition 3 (a, b, and c) of planning permission dated 4th September 2026 (26/04925/FULL)
Pending
26/07388/ADFULL
Detailed drawings of all new windows and external doors; pursuant to condition 4 of planning permission dated 23rd July 2026 (26/02493/FULL)
Pending
26/07387/ADFULL
Samples of the facing materials, including detailed drawings of the dormers, and windows including section drawings showing the glazing bars; pursuant to condition 3 and 4 of planning permission dated 4th September 2026 (26/04924/FULL)
Pending

View Planning Timeline