21 Thayers Farm Road, Beckenham, BR3 4LY

UPRN:100020385484Purpose Built Flat2 bedsBuilt 1983-1990

LeaseholdCouncil Tax: Band CEPC: C (71)

Data freshness:Listing· freshPlanning· 1mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 2mo agoArea· Census 2021

21 Thayers Farm Road, Beckenham, BR3 4LY

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

£351,000

£334k - £369kHigh

Estimate

£351k

Range

£334k – £369k

Rent Estimate (pcm)

£1,400

£1k - £2k

Monthly

£1,400

Yield

4.20%

Verdict

Derived from HomePortfolio scores

21 Thayers Farm Road earns an INVESTIGATE rating with HP Score 74/100. Investment score 70/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is excellent (85/100). 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

74/ 100

Mixed

Investment Score

70/ 100

Moderate

Crime Score

51/ 100

Elevated

Walkability

85/ 100

Excellent

Transit & Bike

Transit 52Bike 65

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 10 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 edge-1.6/15
claims [AVM -14.0% (HIGH), sold-comps -27.4%, £/sqft -27.5%] → measured edge -0.33pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp; asking more than 10% above the estimate (measured -0.33pp)
Market estimate used (HIGH confidence) · snapshot 12 Oct 2026
- valuation_snapshotsestimate for 100020385484· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.3%· as of 1 Nov 2026
Rental economics0/40
gross yield 4.2%; range width penalty ×0.84
- valuation_snapshotsrent estimate 1400/mo (range 1250-1500)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -788/mo, -56% 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 10 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 3 price cut(s), 173 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 10 Nov 2026
Risk & liquidity14.6/15
548 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

£300,000£460,000

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£400,000

At the asking price

Monthly rent£1,400/mo

Evidenced range £1,250-£1,500

Interest rate5.4%

Loan to value75%

Cash required: £131,300
Net cash flow: -£381/mo
Cash on cash: -3.5%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.04 - 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 100020385484Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.3%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 1400/mo (range 1250-1500)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 10 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 10 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 1400/mo (range 1250-1500)
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. 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£351,000

Rent Estimate (pcm)£1,400

Gross Yield4.20%

1y Growth-

3y Growth+0.0%

5y Growth+1.1%

10y Growth+2.0%

Last Sold Price£238,000 (2012-06-15)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningModerate
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

2BR3 4LY

Approval Rate

50%12mo

Development

low

26/04351/HPA
Roof alterations comprising the removal of existing chimneys, alterations to and enlargement of the existing rear roof dormer including two rooflights, extension of the parapet wall, and associated elevational changes.
Pending
26/04270/LDC
Erection of single-storey timber outbuilding within rear garden. LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)
Pending
26/04223/HPA
Loft conversion incorporating rear dormer and rooflights to front roof slope and increase in ridge height
Pending

View Planning Timeline