Flat 13, Gilliat House, Samuelson Place, Isleworth, TW7 4FN

UPRN:10093257639Flat/Maisonette3 bedsBuilt -

LeaseholdCouncil Tax: Band EEPC: B (87)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

Flat 13, Gilliat House, Samuelson Place, Isleworth, TW7 4FN

HP Score

/ 100

Strong

Verdict

yesterday

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

Evidence

18 of 21 sources

Sale Estimate

£448,000

£426k - £470kHigh

Estimate

£448k

Range

£426k – £470k

Rent Estimate (pcm)

£2,000

£2k - £2k

Monthly

£2,000

Yield

5.33%

Verdict

Derived from HomePortfolio scores

Flat 13 earns an INVESTIGATE rating with HP Score 79/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is low. Walkability is excellent (86/100). 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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

79/ 100

Strong

Investment Score

73/ 100

High

Crime Score

33/ 100

Moderate

Walkability

86/ 100

Excellent

Transit & Bike

Transit 51Bike 69

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 11 Nov 2026

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

Valuation edge0/15
claims [AVM -0.4% (HIGH)] → measured edge +0.00pp 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 13 Oct 2026
- valuation_snapshotsestimate for 10093257639· as of 13 Oct 2026
Rental economics2.4/40
gross yield 5.3%; range width penalty ×0.90
- valuation_snapshotsrent estimate 2000/mo (range 1850-2150)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -600/mo, -30% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 11 Nov 2026
Seller motivationNot scored
context, not scored: 3 price cut(s), 192 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 11 Nov 2026
Risk & liquidity14.7/15
267 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 sensitivity

£337,500£517,500

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£449,950

At the asking price

Monthly rent£2,000/mo

Evidenced range £1,850-£2,150

Interest rate5.4%

Loan to value75%

Cash required: £148,783
Net cash flow: -£134/mo
Cash on cash: -1.1%
Score at this price: 17

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.32 - 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 10093257639Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 2000/mo (range 1850-2150)Rental economics · as of 13 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 11 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 11 Nov 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

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 2000/mo (range 1850-2150)
Seller motivation could not be scored
context, not scored: 3 price cut(s), 192 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge

Property risk deep-dive →

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The rent estimate rests on area-level evidence, not lettings on this street.
2. Ask the agent why the price was reduced and whether a previous sale fell through.
3 price cut(s) recorded on the listing history.
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£448,000

Rent Estimate (pcm)£2,000

Gross Yield5.33%

1y Growth-

3y Growth-0.6%

5y Growth+0.2%

10y Growth+1.2%

Last Sold Price£499,950 (2017-09-29)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0TW7 4FN

Approval Rate

-12mo

Development

low

P/2026/3142
Works to two trees in a front garden within a conservation area. T1 Japanese Maple (Acer palmatum). Reducing the height and spread of the tree by approximately 1-1.5m to tidy and contain, retaining furnishing growth. Final height 3m and final spread 3m. T2 Common Myrtle (Myrtus communis). Reducing the height and spread of the tree by approximately 1-1.5m to tidy and contain, retaining furnishing growth. Final height 3m and final spread 1.5m.
Pending
P/2026/3128
Conversion of the existing unlawful large House In Multiple Occupation (Sui Generis) to a small House In Multiple Occupation (C4) with associated cycle and refuse storage.
Pending
P/2026/3106
Erection of a rear roof extension with hip to gable conversion with two front roof windows and a single storey rear extension.
Pending

View Planning Timeline