Flat 21, Swanscombe House, 1 St Ann's Road, London, W11 4SS

UPRN:34038441Flat/Maisonette1 bedsBuilt 1950-1966

LeaseholdCouncil Tax: -EPC: C (70)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoAmenities· 1mo agoArea· Census 2021

Flat 21, Swanscombe House, 1 St Ann's Road, London, W11 4SS

HP Score

/ 100

Strong

Verdict

3 days ago

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

Evidence

18 of 21 sources

Sale Estimate

£316,000

£300k - £332kHigh

Estimate

£316k

Range

£300k – £332k

Rent Estimate (pcm)

£1,350

£1k - £1k

Monthly

£1,350

Yield

5.42%

Verdict

Derived from HomePortfolio scores

Flat 21 earns an INVESTIGATE rating with HP Score 75/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is excellent (96/100). 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)Defra 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

75/ 100

Strong

Investment Score

67/ 100

Moderate

Crime Score

40/ 100

Elevated

Walkability

96/ 100

Excellent

Transit & Bike

Transit 83Bike 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: 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 +5.4% (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 9 Oct 2026
- valuation_snapshotsestimate for 34038441· as of 9 Oct 2026
Rental economics3/40
gross yield 5.4%; range width penalty ×0.90
- valuation_snapshotsrent estimate 1350/mo (range 1250-1450)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -399/mo, -30% 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 30 Oct 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 264 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 & liquidity14.6/15
192 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

£224,000£344,000

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£299,000

At the asking price

Monthly rent£1,350/mo

Evidenced range £1,250-£1,450

Interest rate5.4%

Loan to value75%

Cash required: £95,950
Net cash flow: -£75/mo
Cash on cash: -0.9%
Score at this price: 18

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.34 - 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 34038441Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 1350/mo (range 1250-1450)Rental 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_dateSeller motivation · as of 30 Oct 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 1350/mo (range 1250-1450)
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£316,000

Rent Estimate (pcm)£1,350

Gross Yield5.42%

1y Growth-

3y Growth-3.7%

5y Growth-0.9%

10y Growth-0.5%

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

0W11 4SS

Approval Rate

-12mo

Development

low

P/2026/02674/DET
Discharge of Condition 51 (Stopped Vehicles at-grade) of Planning Permission (ref: 2023/01965/VAR) dated 21 August 2024.
Pending
P/2026/02666/FUL
Erection of a gazebo (measuring 10m x 15m) within the external courtyard at ground floor level (lower forecourt), for a temporary period between 11th November 2026 - 30th December 2026.
Pending
P/2026/02613/CLE
Use of the existing property as 2no. self-contained flats, comprising of 1no. flat at lower ground and ground floor level and 1no. flat at first and upper floor level.
Pending

View Planning Timeline

Ownership

Corporate Ownership58.3%
Overseas OwnershipNo
Lease Term Remaining119 yrs
CovenantsNone
Lease TypeLeasehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

7 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£42,811

Population Density-

Owner Occupied9%

Age Distribution

0-15 21%16-64 69%65+ 10%

View Area Profile

Schools Nearby

St Anne's & Avondale Park Nursery School
0.2 mi
GoodConcerns
Avondale Park Primary School
0.2 mi
Good
Saint Francis of Assisi Catholic Primary School
0.3 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.
St Clement and St James CofE Primary School
0.3 mi
Good

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

View All Schools

Comparables

View All

Swanscombe House St Anns Road
-
£385k
-
Swanscombe House St Anns Road
-
£354k
-
Swanscombe House St Anns Road
-
£460k
-
Swanscombe House St Anns Road
-
£316k
-

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