Flat 13, 1 Cornell Square, London, SW8 2EN

UPRN:10023851402Flat/Maisonette2 bedsBuilt 2003-2006

LeaseholdCouncil Tax: Band EEPC: B (82)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoOwnership· freshEPC· 1mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 2mo agoArea· Census 2021

Flat 13, 1 Cornell Square, London, SW8 2EN

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

17 of 21 sources

Sale Estimate

£513,000

£462k - £565kMedium

Estimate

£513k

Range

£462k – £565k

Rent Estimate (pcm)

£2,100

£2k - £2k

Monthly

£2,100

Yield

4.58%

Verdict

Derived from HomePortfolio scores

Flat 13 earns an INVESTIGATE rating with HP Score 71/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is excellent (88/100). 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

71/ 100

Mixed

Investment Score

67/ 100

Moderate

Crime Score

58/ 100

Elevated

Walkability

88/ 100

Excellent

Transit & Bike

Transit 49Bike 75

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: 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 -7.2% (MEDIUM), sold-comps +10.9%, £/sqft +10.8%] → 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 9 Oct 2026
- valuation_snapshotsestimate for 10023851402· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 11 comps, dispersion 17%· as of 28 Oct 2026
Rental economics0/40
gross yield 4.6%; range width penalty ×0.82
- valuation_snapshotsrent estimate 2100/mo (range 1900-2300)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -907/mo, -43% 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 5 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 47 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
268 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

£412,500£632,500

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£550,000

At the asking price

Monthly rent£2,100/mo

Evidenced range £1,900-£2,300

Interest rate5.4%

Loan to value75%

Cash required: £183,800
Net cash flow: -£402/mo
Cash on cash: -2.6%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.13 - below 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 10023851402Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 11 comps, dispersion 17%Valuation edge · as of 28 Oct 2026
valuation_snapshotsrent estimate 2100/mo (range 1900-2300)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 Nov 2026

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 2100/mo (range 1900-2300)
Stress margin needs verification before you rely on it
costs not disclosed by the advert

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. 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£513,000

Rent Estimate (pcm)£2,100

Gross Yield4.58%

1y Growth-

3y Growth-15.5%

5y Growth-2.2%

10y Growth-1.6%

Last Sold Price£585,000 (2015-09-17)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SW8 2EN

Approval Rate

-12mo

Development

low

26/03250/DET
Approval of details pursuant to condition 4 (Window Details) of planning permission ref. 26/00800/LB and 26/00799/RG3 (Replacement of single glazed timber framed windows serving flat 14, with single glazed timber framed windows (like for like replacement), granted on 19.06.2026.
Pending
26/03200/LB
Removal of the existing double doors between the first-floor reception room and kitchen/breakfast room, and infilling of the associated opening including reinstatement of skirting boards to match the existing traditional detailing (Flat 2).
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

View Planning Timeline