Apartment 20, Rosamond House, 4, London, SW1P 2FD

UPRN:10033638652Purpose Built Flat1 bedsBuilt -

LeaseholdCouncil Tax: -EPC: B (87)

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

Apartment 20, Rosamond House, 4, London, SW1P 2FD

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

20 of 21 sources

Sale Estimate

£862,000

£776k - £949kMedium

Estimate

£862k

Range

£776k – £949k

Rent Estimate (pcm)

£3,650

£3k - £4k

Monthly

£3,650

Yield

5.37%

Verdict

Derived from HomePortfolio scores

Apartment 20 earns an INVESTIGATE rating with HP Score 64/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (99/100). 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

64/ 100

Mixed

Investment Score

67/ 100

Moderate

100

Crime Score

100/ 100

Elevated

Walkability

99/ 100

Excellent

Transit & Bike

Transit 92Bike 74

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 edge0/15
claims [AVM +5.5% (MEDIUM), sold-comps -9.7%, £/sqft -9.7%] → 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 13 Oct 2026
- valuation_snapshotsestimate for 10033638652· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 23.3%· as of 29 Oct 2026
Rental economics2.4/40
gross yield 5.4%; range width penalty ×0.82
- valuation_snapshotsrent estimate 3650/mo (range 3300-4000)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -886/mo, -24% 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), 56 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 & liquidity12.8/15
89 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

£611,000£937,000

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£815,000

At the asking price

Monthly rent£3,650/mo

Evidenced range £3,300-£4,000

Interest rate5.4%

Loan to value75%

Cash required: £276,550
Net cash flow: -£224/mo
Cash on cash: -1.0%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.33 - 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 10033638652Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 23.3%Valuation edge · as of 29 Oct 2026
valuation_snapshotsrent estimate 3650/mo (range 3300-4000)Rental economics · as of 13 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 3650/mo (range 3300-4000)
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£862,000

Rent Estimate (pcm)£3,650

Gross Yield5.37%

1y Growth-

3y Growth-13.8%

5y Growth+0.3%

10y Growth-5.1%

Last Sold Price£1,060,000 (2016-12-22)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SW1P 2FD

Approval Rate

-12mo

Development

low

26/07369/TCA
T1 - Large Sycamore Minor pruning of the crown overhanging Eaton Lane, comprising removal/pruning back of the specific branch growth extending beyond and above the boundary fence line, as identified in the submitted Existing and Proposed Tree Works Photographs. The works are required to provide clearance for the proposed temporary welfare cabin and gantry installation associated with the 8 Eaton Lane development. Pruning will be limited to the minimum extent necessary to achieve the required clearance, with larger structural branches retained.
Pending
26/07374/ADV
Display of externally illuminated fascia sign measuring 1.9m X 0.31m, five non illuminated awnings 3.2m X 1.5m and internally illuminated menu box 0.4m X 0.5m
Pending
26/07373/FULL
Alterations to shopfront of Unit V27 including application of timber panelling, wall lights and trough lights, and the display 1 externally illuminated fascia sign, 1 internally illuminated menu case, and 5 awnings.
Pending

View Planning Timeline