Flat 409, 7 Windsor Square, London, SE18 6XR

UPRN:10010263441Purpose Built Flat2 bedsBuilt 2020

LeaseholdCouncil Tax: -EPC: B (86)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· 1mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

Flat 409, 7 Windsor Square, London, SE18 6XR

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£596,000

£567k - £626kHigh

Estimate

£596k

Range

£567k – £626k

Rent Estimate (pcm)

£3,150

£3k - £3k

Monthly

£3,150

Yield

9.45%

Verdict

Derived from HomePortfolio scores

Flat 409 earns an INVESTIGATE rating with HP Score 64/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is elevated. Walkability is excellent (92/100). 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

64/ 100

Mixed

Investment Score

73/ 100

High

100

Crime Score

100/ 100

Elevated

Walkability

92/ 100

Excellent

Transit & Bike

Transit 74Bike 71

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 4 Nov 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Check before relying on this score: the estimate sits 33% above the ask; lead to verify: leasehold with no service charge disclosed - the stress test assumes GBP 0. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +32.9% (HIGH), sold-comps +34.6%, £/sqft +34.6%] → measured edge +0.50pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp
Market estimate used (HIGH confidence) · snapshot 9 Nov 2026
- valuation_snapshotsestimate for 10010263441· as of 9 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 7.3%· as of 4 Nov 2026
Rental economics32.5/40
gross yield 9.4%; range width penalty ×0.91; the estimate this rent rides on sits 33% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 3150/mo (range 2900-3350)· as of 9 Nov 2026· verify before relying on this
- valuation_snapshotssale estimate 33% above the ask on the same snapshot - verify the rent describes this home· as of 9 Nov 2026· verify before relying on this
Stress margin15.8/30
stressed cash flow +498/mo, +16% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); passes the stress; leasehold with no service charge disclosed - the stress assumes GBP 0
- underwriting_assumptionscosts not disclosed by the advert· as of 4 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 63 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge
- portal_listingsprice_changes + first_published_date· as of 4 Nov 2026
Risk & liquidity14.7/15
475 sales/12mo in area; valuation range width 10%
- property_intelligencetransactions_12mo

4 of 4 components scored. Ranks on gross yield, the stress margin, risk and disclosed facts. A pricing claim earns only its measured edge: today 0 for the market estimate and at most +0.5pp for sold evidence. The score itself is not yet checked against the outcomes of homes it scored.

Economics

What happens to your money

Price sensitivityScores 80+ up to £320,000

£300,000£460,000

The same scorer re-run at hypothetical asking prices, holding rent, comps and listing history constant. Not a prediction of what the seller would accept.

Your assumptions

Purchase price£400,000

At the asking price

Monthly rent£3,150/mo

Evidenced range £2,900-£3,350

Interest rate5.4%

Loan to value75%

Cash required: £131,300
Net cash flow: £831/mo
Cash on cash: 7.6%
Score at this price: 66

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.33 - clears the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Evidence

Where every number comes from

valuation_snapshotsestimate for 10010263441Valuation edge · as of 9 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 7.3%Valuation edge · as of 4 Nov 2026
valuation_snapshotsrent estimate 3150/mo (range 2900-3350)Rental economics · as of 9 Nov 2026 · verify before relying on this
valuation_snapshotssale estimate 33% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 9 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advert

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Rental economics needs verification before you rely on it
rent estimate 3150/mo (range 2900-3350)
Rental economics needs verification before you rely on it
sale estimate 33% above the ask on the same snapshot - verify the rent describes this home

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The market estimate this rent rides on sits far above the asking price, so the rent may describe a different home.
2. Set your walk-away price before viewing - above £320,000 the deal stops scoring well.
Computed by re-running the score at higher prices.
3. Treat the gap to the estimate as unproven - compare recent sold prices on the street yourself before pricing an offer around it.
On later completions, homes listed below their estimate sold at the same share of the asking price as the rest.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£596,000

Rent Estimate (pcm)£3,150

Gross Yield9.45%

1y Growth+75.4%

3y Growth+0.3%

5y Growth+0.7%

10y Growth+2.3%

Last Sold Price£590,000 (2022-07-27)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningModerate
LandslideModerate
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SE18 6XR

Approval Rate

-12mo

Development

low

26/3107/CP
Certificate of Lawfulness (Proposed) is sought for the use of the ground floor of 71-77 Powis Street, Woolwich for indoor sport, recreation and fitness on a 24 hour basis falling within Use Class E(d)
Pending
26/3082/PN2
Prior Approval is sought for the change of use of the first and second floor commercial premises (Class E) to provide two residential flats (Class C3).The commercial unit on the ground floor will be retained. .
Pending
26/3052/SD
Submission of details pursuant to Condition 42 (Piling) of application 25/1877/MA dated 31/07/2026
Pending

View Planning Timeline