11 Portsdown Avenue, London, NW11 0NH

UPRN:200094084Detached House4 bedsBuilt 1900-1929

FreeholdCouncil Tax: Band GEPC: E (49)

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

HP Score

/ 100

Strong

Verdict

3 days ago

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed

Evidence

20 of 21 sources

Sale Estimate

£1,766,000

£1.59M - £1.94MMedium

Estimate

£1.77M

Range

£1.59M – £1.94M

Rent Estimate (pcm)

£6,950

£6k - £8k

Monthly

£6,950

Yield

4.40%

Verdict

Derived from HomePortfolio scores

11 Portsdown Avenue earns an INVESTIGATE rating with HP Score 81/100. Investment score 69/100 reflects moderate fundamentals. Crime intensity is low. Walkability is excellent (90/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is freehold. 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

81/ 100

Strong

Investment Score

69/ 100

Moderate

Crime Score

20/ 100

Moderate

Walkability

90/ 100

Excellent

Transit & Bike

Transit 52Bike 66

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 30 Oct 2026

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

Valuation edge0/15
claims [AVM -7.3% (MEDIUM)] → 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 9 Oct 2026
- valuation_snapshotsestimate for 200094084· as of 9 Oct 2026
Rental economics0/40
gross yield 4.4%; range width penalty ×0.81
- valuation_snapshotsrent estimate 6950/mo (range 6300-7650)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -3,016/mo, -43% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing
- underwriting_assumptionscosts not disclosed by the advert· as of 30 Oct 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 335 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 30 Oct 2026
Risk & liquidity12.8/15
178 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

£1,421,000£1,989,500

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£1,895,000

At the asking price

Monthly rent£6,950/mo

Evidenced range £6,300-£7,650

Interest rate5.4%

Loan to value75%

Cash required: £710,950
Net cash flow: -£1,584/mo
Cash on cash: -2.7%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.09 - 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 200094084Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 6950/mo (range 6300-7650)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 30 Oct 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 30 Oct 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 6950/mo (range 6300-7650)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 335 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. 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£1,766,000

Rent Estimate (pcm)£6,950

Gross Yield4.40%

1y Growth-

3y Growth+2.2%

5y Growth+0.5%

10y Growth+1.0%

Last Sold Price£1,700,000 (2021-06-09)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0NW11 0NH

Approval Rate

-12mo

Development

low

26/3925/CON
Submission of details of condition 6 (Refuse and Recycling) 10 (Cycle Parking and Storage) 15 (Pre-completion Sound Insulation Test Certificates) pursuant to planning permission 23/3530/S73 dated 09/01/2024 CONDITION 6: BIN STORE CONDITION 10: CYCLE STORE CODNITION 15: PRE-COMPLETION SOUND INSULATION TEST CERTS (COMPLIANCE)
Pending
26/3923/PNH
2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 3.00 metres. Following demolition of the existing rear extension and patio.
Pending
26/3917/192
Roof extension involving hip to gable, rear dormer window and new side windows
Pending

View Planning Timeline

Ownership

Corporate Ownership47.4%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2021-06-09
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

17 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£39,239

Population Density-

Owner Occupied53%

Age Distribution

0-15 26%16-64 61%65+ 13%

View Area Profile

Schools Nearby

Shiras Devorah High School
0.2 mi
Requires improvement
Lubavitch Yeshiva Ketanah of London
0.2 mi
Report card2026
Ofsted no longer awards a single overall grade.
Menorah Primary School for Boys
0.4 mi
-
Menorah Primary School for Girls
0.4 mi
Outstanding

5 of 8 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

7C Portsdown Avenue
-
£1.80M
-
7B Portsdown Avenue
-
£2.00M
-
7A Portsdown Avenue
-
£1.80M
-
7D Portsdown Avenue
-
£2.05M
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN