Apartment 1, Crompton Court, 4 St Mark's Square, Bromley, BR2 9UY

UPRN:10070015181Purpose Built Flat1 bedsBuilt -

LeaseholdCouncil Tax: Band DEPC: C (78)

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

Apartment 1, Crompton Court, 4 St Mark's Square, Bromley, BR2 9UY

HP Score

/ 100

Mixed

Verdict

3 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£386,000

£367k - £405kHigh

Estimate

£386k

Range

£367k – £405k

Rent Estimate (pcm)

£1,750

£2k - £2k

Monthly

£1,750

Yield

4.20%

Verdict

Derived from HomePortfolio scores

Apartment 1 earns an INVESTIGATE rating with HP Score 63/100. Investment score 71/100 reflects strong fundamentals. Crime intensity is elevated. 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 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

63/ 100

Mixed

Investment Score

71/ 100

High

100

Crime Score

100/ 100

Elevated

Walkability

88/ 100

Excellent

Transit & Bike

Transit 64Bike 67

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 4 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 -29.5% (HIGH), sold-comps -23.5%, £/sqft -23.6%] → 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 9 Oct 2026
- valuation_snapshotsestimate for 10070015181· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 12.9%· as of 5 Nov 2026
Rental economics0/40
gross yield 4.2%; range width penalty ×0.86
- valuation_snapshotsrent estimate 1750/mo (range 1600-1900)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -953/mo, -54% 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 4 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 76 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 4 Nov 2026
Risk & liquidity14.7/15
467 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

£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£1,750/mo

Evidenced range £1,600-£1,900

Interest rate5.4%

Loan to value75%

Cash required: £166,300
Net cash flow: -£476/mo
Cash on cash: -3.4%
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 10070015181Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 12.9%Valuation edge · as of 5 Nov 2026
valuation_snapshotsrent estimate 1750/mo (range 1600-1900)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 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 1750/mo (range 1600-1900)
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. 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£386,000

Rent Estimate (pcm)£1,750

Gross Yield4.20%

1y Growth-

3y Growth+0.0%

5y Growth+1.2%

10y Growth+2.0%

Last Sold Price£355,000 (2020-02-19)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningSignificant
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0BR2 9UY

Approval Rate

-12mo

Development

low

26/04331/FPA
Installation of 9 no. heat-recovery condensing units and 2 no. outdoor air-conditioning condensing units at roof level over the Level 4 Link block, together with associated GRP enclosure, support frames, pipework, cable trays, cabling and ancillary works.
Pending
25/00198/S73A
Minor Material Amendment under S73 of the Town and Country Planning Act to planning permission reference 25/00198/FULL1(granted for Change of use of vacant commercial premises from Class E Use (Commercial, Business and Service) to Sui Generis Use for mixed restaurant and hot food takeaway use, incorporating alterations to shopfront to provide replacement door to front elevation and LED strip lighting surround, and associated plant equipment) in order to vary condition 3 and 4 to allow for changes to the currently permitted trading hours of the premises.
Pending
26/04292/HPA
Demolition of existing detached garage to construct proposed double storey side extension, construction of front porch and elevational alterations.
Pending

View Planning Timeline