Flat 1, St Clements House, 12 Leyden Street, London, E1 7LL

UPRN:6352086Flat/Maisonette2 bedsBuilt 1996-2002

LeaseholdCouncil Tax: Band FEPC: C (76)

Data freshness:Listing· freshPrice Paid· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 4mo ago

Flat 1, St Clements House, 12 Leyden Street, London, E1 7LL

HP Score

/ 100

Mixed

Verdict

4 days ago

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

Evidence

18 of 21 sources

Sale Estimate

£758,000

£682k - £834kMedium

Estimate

£758k

Range

£682k – £834k

Rent Estimate (pcm)

£3,750

£3k - £4k

Monthly

£3,750

Yield

7.50%

Verdict

Derived from HomePortfolio scores

Flat 1 earns an INVESTIGATE rating with HP Score 63/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (100/100). 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 listingsMarket 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

63/ 100

Mixed

Investment Score

67/ 100

Moderate

100

Crime Score

100/ 100

Elevated

100

Walkability

100/ 100

Excellent

Transit & Bike

Transit 100Bike 74

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 30 Oct 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 edge0/15
claims [AVM +20.8% (MEDIUM)] → 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 (MEDIUM confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 6352086· as of 9 Oct 2026
Rental economics17.1/40
gross yield 7.5%; range width penalty ×0.85; the estimate this rent rides on sits 21% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 3750/mo (range 3400-4050)· as of 9 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 9 Oct 2026· verify before relying on this
Stress margin2.5/30
stressed cash flow +95/mo, +3% 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 30 Oct 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 237 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 30 Oct 2026
Risk & liquidity12.8/15
324 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£3,750/mo

Evidenced range £3,400-£4,050

Interest rate5.4%

Loan to value75%

Cash required: £201,300
Net cash flow: £571/mo
Cash on cash: 3.4%
Score at this price: 32

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.85 - 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 6352086Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 3750/mo (range 3400-4050)Rental economics · as of 9 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 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 30 Oct 2026 · verify before relying on this
portal_listingsprice_changes + first_published_date

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 3750/mo (range 3400-4050)
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£758,000

Rent Estimate (pcm)£3,750

Gross Yield7.50%

1y Growth-

3y Growth-5.2%

5y Growth-2.1%

10y Growth-1.1%

Last Sold Price£550,000 (2007-09-25)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

1E1 7LL

Approval Rate

100%12mo

Development

low

26/01549/MDC
Submission of details of Site Condition and Proposed Ground Levels Plan pursuant to condition 80 of Planning Permission 24/00836/FULEIA dated 28.10.2025.
Pending
PA/26/01813
Display of 2no. internally illuminated fascia signs, 1no. internally illuminated projecting sign, vinyls to the delivery door, and 2no. internally illuminated signs positioned behind the internal glazing.
Pending
PA/26/01812/NC
Replacement of glazed shopfront sections and internal alteration.
Pending

View Planning Timeline