Flat A, 10 Warren Street, London, W1T 5LF

UPRN:5076006Flat/Maisonette3 bedsBuilt before 1900

LeaseholdCouncil Tax: Band GEPC: D (60)

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

Flat A, 10 Warren Street, London, W1T 5LF

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

17 of 21 sources

Sale Estimate

£798,000

£758k - £838kHigh

Estimate

£798k

Range

£758k – £838k

Rent Estimate (pcm)

£3,200

£3k - £4k

Monthly

£3,200

Yield

5.12%

Verdict

Derived from HomePortfolio scores

Flat A earns an INVESTIGATE rating with HP Score 60/100. Investment score 61/100 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 listingsMarket 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

60/ 100

Mixed

Investment Score

61/ 100

Moderate

100

Crime Score

100/ 100

Elevated

Walkability

99/ 100

Excellent

Transit & Bike

Transit 100Bike 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 +6.0% (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 5076006· as of 13 Oct 2026
Rental economics0.8/40
gross yield 5.1%; range width penalty ×0.79
- valuation_snapshotsrent estimate 3200/mo (range 2900-3550)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -942/mo, -29% 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: 1 price cut(s), 122 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 & liquidity0/15
lease 60 years (under 80): most lenders refuse it - risk scores nothing; 39 sales/12mo in area; valuation range width 10%
- property_intelligencetransactions_12mo
- listing_factslease 60 years remaining (advert)· as of 4 Nov 2026

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

£562,500£862,500

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£750,000

At the asking price

Monthly rent£3,200/mo

Evidenced range £2,900-£3,550

Interest rate5.4%

Loan to value75%

Cash required: £253,800
Net cash flow: -£316/mo
Cash on cash: -1.5%
Score at this price: 1

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.26 - 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 5076006Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 3200/mo (range 2900-3550)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
property_intelligencetransactions_12moRisk & liquidity

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 3200/mo (range 2900-3550)
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.
1 price cut(s) recorded on the listing history.
3. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£798,000

Rent Estimate (pcm)£3,200

Gross Yield5.12%

1y Growth-

3y Growth-9.5%

5y Growth-5.7%

10y Growth-3.9%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseHigh

View Full Risk Report

Planning Activity

Recent Apps

0W1T 5LF

Approval Rate

-12mo

Development

low

2026/4584/L
Internal alterations and refurbishments, including reconfigured bathrooms, alterations to partitions and doors, and reinstatement of traditional cornices and joinery.
Pending
2026/4810/P
Details pursuant to Condition 7(b) (Brickwork) of planning permission ref. 2023/5470/P (dated 12/03/2025) for: Deep refurbishment of existing building including new facades; erection of replacement roof extension with terrace to rear; reopening of lightwell to front and reconfiguration of entrance area; demolition of two storey outrigger and replacement with three storeys plus plant enclosure; single storey rear infill extension to existing car park with terrace above; erection of full height stair rear core extension.
Pending
2026/4773/L
Internal refurbishment and reconfiguration of wings 1.3 and 1.4; associated works on the first, second and third floors to improve the laboratory environments and associated spaces; and relocation of the partitions in the central stairwell.
Approved

View Planning Timeline