Flat 4, 9 Old Town, London, SW4 0JT

UPRN:10093059372Flat/Maisonette2 bedsBuilt 2012-2021

LeaseholdCouncil Tax: Band DEPC: C (79)

Data freshness:Price Paid· freshPlanning· freshEPC· 2mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

20 of 21 sources

Sale Estimate

£636,000

£573k - £700kMedium

Estimate

£636k

Range

£573k – £700k

Rent Estimate (pcm)

£3,000

£3k - £3k

Monthly

£3,000

Yield

7.20%

Verdict

Derived from HomePortfolio scores

Flat 4 earns an INVESTIGATE rating with HP Score 68/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is elevated. Walkability is excellent (94/100). 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

68/ 100

Mixed

Investment Score

73/ 100

High

Crime Score

90/ 100

Elevated

Walkability

94/ 100

Excellent

Transit & Bike

Transit 68Bike 74

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 5 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. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +21.4% (MEDIUM), sold-comps +16.7%, £/sqft +16.6%] → 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 (MEDIUM confidence) · snapshot 13 Oct 2026
- valuation_snapshotsestimate for 10093059372· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 5.1%· as of 22 Oct 2026
Rental economics15.3/40
gross yield 7.2%; range width penalty ×0.87; the estimate this rent rides on sits 21% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 3000/mo (range 2750-3250)· 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 -34/mo, -1% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing
- underwriting_assumptionscosts not disclosed by the advert· as of 5 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 72 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 5 Nov 2026
Risk & liquidity12.8/15
349 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

£375,000£575,000

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£500,000

At the asking price

Monthly rent£3,000/mo

Evidenced range £2,750-£3,250

Interest rate5.4%

Loan to value75%

Cash required: £166,300
Net cash flow: £389/mo
Cash on cash: 2.8%
Score at this price: 31

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.78 - 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 10093059372Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 5.1%Valuation edge · as of 22 Oct 2026
valuation_snapshotsrent estimate 3000/mo (range 2750-3250)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 3000/mo (range 2750-3250)
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£636,000

Rent Estimate (pcm)£3,000

Gross Yield7.20%

1y Growth+12.6%

3y Growth-1.1%

5y Growth-1.4%

10y Growth-0.3%

Last Sold Price£535,000 (2016-06-06)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

4SW4 0JT

Approval Rate

50%12mo

Development

low

26/03168/TCA
T1 - Bay Laurel reduce height by 2m from tips and shorten laterals by 1m from tips T2 - Oak reduce laterals over neighbours property by 2m from tips and thin by 15%. T3 - Loquat thin by 15% and shorten laterals by .5m form tips T4 - Gleditisia thin by 15% concentrating on the tips.
Pending
26/03176/P3MA
Prior approval of change of use of Unit 6 at third floor level from office (use class E) to a residential unit (use class C).
Pending
26/03157/TCA
1 x Common Lime (T1) - Reduce height of tree by approx 8m. Reduce length of lateral limb growing just above the cavity by 50%. Remove major deadwood throughout crown. Reason: Existing large cavity approximately 1m long and 0.5m across locate at 6m on the south facing side of the main stem and in line with the union of the branch approximately 8-10m long.
Pending

View Planning Timeline