First Floor Flat, 208 Portnall Road, London, W9 3BJ

UPRN:10033551732Flat/Maisonette2 bedsBuilt -

Tenure: -Council Tax: -EPC: -

Data freshness:Listing· freshOwnership· freshRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

First Floor Flat, 208 Portnall Road, London, W9 3BJ

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£524,000

£419k - £628kLow

Estimate

£524k

Range

£419k – £628k

Rent Estimate (pcm)

£2,250

£2k - £2k

Monthly

£2,250

Yield

3.60%

Verdict

Derived from HomePortfolio scores

First Floor Flat earns an INVESTIGATE rating with HP Score 71/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is excellent (96/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)Defra 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

71/ 100

Mixed

Investment Score

60/ 100

Moderate

Crime Score

44/ 100

Elevated

Walkability

96/ 100

Excellent

Transit & Bike

Transit 54Bike 73

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

headline score requires valuation_edge (estimate confidence LOW below scoring floor)

What we could establish

Rental economics0/40
gross yield 3.6%; range width penalty ×0.84
- valuation_snapshotsrent estimate 2250/mo (range 2050-2450)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,640/mo, -73% 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 11 Nov 2026· verify before relying on this
Risk & liquidity9.3/15
258 sales/12mo in area; valuation range width 40%
- property_intelligencetransactions_12mo

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£750,000

At the asking price

Monthly rent£2,250/mo

Evidenced range £2,050-£2,450

Interest rate5.4%

Loan to value75%

Cash required: £253,800
Net cash flow: -£974/mo
Cash on cash: -4.6%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.89 - 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_snapshotsrent estimate 2250/mo (range 2050-2450)Rental economics · as of 9 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 11 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 11 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
Valuation edge could not be scored
estimate confidence LOW below scoring floor
Rental economics needs verification before you rely on it
rent estimate 2250/mo (range 2050-2450)

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. Fill the valuation edge gap before relying on the score.
estimate confidence LOW below scoring floor
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£524,000

Rent Estimate (pcm)£2,250

Gross Yield3.60%

1y Growth+32.5%

3y Growth-4.5%

5y Growth-0.6%

10y Growth-0.3%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

3W9 3BJ

Approval Rate

-12mo

Development

low

26/07489/LBC
Erection of a temporary stretch canopy for six months a year, for a period of five years at Jaego's House. (Linked with 26/07488/FULL)
Pending
26/07488/FULL
Erection of a temporary stretch canopy for six months a year, for a period of five years at Jaego's House. (Linked with 26/07489/LBC)
Pending
26/07423/CLOPUD
Painting of the decorative stonework, window frames and doors on the front elevation and front boundary wall
Pending

View Planning Timeline