Flat A, 9 Windmill Road, London, SW18 2EU

UPRN:121049523Converted Flat3 bedsBuilt 1900-1929

LeaseholdCouncil Tax: Band DEPC: D (62)

Data freshness:Listing· freshPrice Paid· freshPlanning· freshEPC· 1mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 2mo agoArea· Census 2021Council Tax· 6mo ago

Flat A, 9 Windmill Road, London, SW18 2EU

HP Score

/ 100

Strong

Verdict

yesterday

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed

Evidence

20 of 21 sources

Sale Estimate

£759,000

£683k - £835kMedium

Estimate

£759k

Range

£683k – £835k

Rent Estimate (pcm)

£3,550

£3k - £4k

Monthly

£3,550

Yield

7.10%

Verdict

Derived from HomePortfolio scores

Flat A earns an INVESTIGATE rating with HP Score 81/100. Investment score 62/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is good (82/100). 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 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

81/ 100

Strong

Investment Score

62/ 100

Moderate

Crime Score

11/ 100

Low

Walkability

82/ 100

High

Transit & Bike

Transit 39Bike 62

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 21% 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 +20.9% (MEDIUM), sold-comps +25.9%, £/sqft +26.0%] → 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 (MEDIUM confidence) · snapshot 13 Oct 2026
- valuation_snapshotsestimate for 121049523· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 10.1%· as of 30 Oct 2026
Rental economics14.5/40
gross yield 7.1%; range width penalty ×0.86; the estimate this rent rides on sits 21% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 3550/mo (range 3250-3850)· as of 13 Oct 2026· verify before relying on this
- valuation_snapshotssale estimate 21% above the ask on the same snapshot - verify the rent describes this home· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -52/mo, -1% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing; 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), 28 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 & liquidity12.8/15
779 sales/12mo in area; valuation range width 20%
- 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 sensitivity

£450,000£690,000

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£600,000

At the asking price

Monthly rent£3,550/mo

Evidenced range £3,250-£3,850

Interest rate5.4%

Loan to value75%

Cash required: £201,300
Net cash flow: £433/mo
Cash on cash: 2.6%
Score at this price: 30

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.75 - 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 121049523Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 10.1%Valuation edge · as of 30 Oct 2026
valuation_snapshotsrent estimate 3550/mo (range 3250-3850)Rental economics · as of 13 Oct 2026 · verify before relying on this
valuation_snapshotssale estimate 21% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 13 Oct 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 3550/mo (range 3250-3850)
Rental economics needs verification before you rely on it
sale estimate 21% 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. 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.
3. 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£759,000

Rent Estimate (pcm)£3,550

Gross Yield7.10%

1y Growth-

3y Growth-0.2%

5y Growth+0.2%

10y Growth+0.0%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

1SW18 2EU

Approval Rate

100%12mo

Development

low

2026/3248
T1 Mimosa (x1) Fell to ground level. Reason: The tree has become excessively large for the location. It is suppressing smaller adjacent trees. The trunk is also pressing against the boundary wall with No.59 Spencer Park and is likely to cause damage if retained. T2 + T3 Himalayan Birch (x2) Crown lift by 1.5m. Reason: To allow more light to the plants below. T4 Cherry (x1) Reduce crown by 1.5m. Reason: To redress the balance as supressed by the Birches. T5 Paulownia (x1) Crown lift by 1.5m. Reason: To allow more light to the plants below.
Pending
2026/3244
Erection of an extension above the two storey back addition.
Rejected
2026/3219
Alterations including installation of iron vehicle access gates to the front boundary wall, in connection with formation of a dropped kerb and vehicle crossover.
Rejected

View Planning Timeline

Ownership

Corporate Ownership52.4%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

14 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£49,310

Population Density3,854 /km²

Owner Occupied55%

Age Distribution

0-15 18%16-64 72%65+ 10%

View Area Profile

Schools Nearby

Wandsworth Preparatory School
0.2 mi
Inspected by ISI
Allfarthing Primary School
0.3 mi
Good
Swaffield School
0.3 mi
Inspected as Swaffield School (URN 101022) on 10 Jun 2025
Park House School
0.3 mi
Outstanding

5 of 9 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

2 Windmill Road
-
£340k
-
7 Windmill Road
-
£618k
-
14 Windmill Road
-
£318k
-
14 Windmill Road
-
£895k
-

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