Flat 2, 18 Maddox Street, London, W1S 1PL

UPRN:10033630404Flat/Maisonette2 bedsBuilt 1900-1929

LeaseholdCouncil Tax: -EPC: C (74)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· freshRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

Flat 2, 18 Maddox Street, London, W1S 1PL

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

19 of 21 sources

Sale Estimate

£1,369,000

£1.30M - £1.44MHigh

Estimate

£1.37M

Range

£1.30M – £1.44M

Rent Estimate (pcm)

£4,550

£4k - £5k

Monthly

£4,550

Yield

4.04%

Verdict

Derived from HomePortfolio scores

Flat 2 earns an INVESTIGATE rating with HP Score 61/100. Investment score 61/100 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 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

61/ 100

Mixed

Investment Score

61/ 100

Moderate

100

Crime Score

100/ 100

Elevated

100

Walkability

100/ 100

Excellent

Transit & Bike

Transit 100Bike 78

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 4 Nov 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Valuation edge0/15
claims [AVM +1.4% (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 13 Oct 2026
- valuation_snapshotsestimate for 10033630404· as of 13 Oct 2026
Rental economics0/40
gross yield 4.0%; range width penalty ×0.72
- valuation_snapshotsrent estimate 4550/mo (range 4000-5100)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,834/mo, -62% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 150 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 & liquidity11/15
15 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

£1,012,500£1,552,500

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£1,350,000

At the asking price

Monthly rent£4,550/mo

Evidenced range £4,000-£5,100

Interest rate5.4%

Loan to value75%

Cash required: £485,050
Net cash flow: -£1,406/mo
Cash on cash: -3.5%
Score at this price: 11

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.00 - 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 10033630404Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 4550/mo (range 4000-5100)Rental economics · as of 13 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 4 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 Nov 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 4550/mo (range 4000-5100)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 150 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge

Property risk deep-dive →

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£1,369,000

Rent Estimate (pcm)£4,550

Gross Yield4.04%

1y Growth-0.2%

3y Growth+21.0%

5y Growth+4.1%

10y Growth-1.3%

Last Sold Price£1,695,000 (2023-07-03)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseHigh

View Full Risk Report

Planning Activity

Recent Apps

0W1S 1PL

Approval Rate

-12mo

Development

low

2026/4827/P
Installation of new kitchen extraction system (retrospective).
Pending
2026/4584/L
Internal alterations and refurbishments, including reconfigured bathrooms, alterations to partitions and doors, and reinstatement of traditional cornices and joinery.
Pending
26/07401/FULL
Use of the ground floor unit as a drinking establishment (Sui Generis).
Pending

View Planning Timeline