9 Castellain Road, London, W9 1EY

UPRN:100022732452Converted Flat3 bedsBuilt 1900-1929

LeaseholdCouncil Tax: Band HEPC: C (75)

Data freshness:Listing· freshOwnership· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

HP Score

/ 100

Strong

Verdict

today

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

Evidence

20 of 21 sources

Sale Estimate

£3,232,000

£3.07M - £3.39MHigh

Estimate

£3.23M

Range

£3.07M – £3.39M

Rent Estimate (pcm)

£13,750

£13k - £15k

Monthly

£13,750

Yield

5.08%

Verdict

Derived from HomePortfolio scores

9 Castellain Road earns an INVESTIGATE rating with HP Score 80/100. Investment score 70/100 reflects strong fundamentals. Crime intensity is low. Walkability is excellent (93/100). 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

80/ 100

Strong

Investment Score

70/ 100

High

Crime Score

23/ 100

Moderate

Walkability

93/ 100

Excellent

Transit & Bike

Transit 56Bike 73

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

asking price missing or outside scoring range

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£3,250,000

At the asking price

Monthly rent£13,750/mo

Evidenced range £12,600-£14,900

Interest rate5.4%

Loan to value75%

Cash required: £1,280,050
Net cash flow: -£1,450/mo
Cash on cash: -1.4%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.25 - clears the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion

Property risk deep-dive →flood, subsidence, crime, environment - the full domain

Plan

Before you offer

1. 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£3,232,000

Rent Estimate (pcm)£13,750

Gross Yield5.08%

1y Growth+17.3%

3y Growth-4.5%

5y Growth-0.6%

10y Growth-0.3%

Last Sold Price£2,500,000 (2015-12-15)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1W9 1EY

Approval Rate

-12mo

Development

low

26/07418/FULL
Refurbishment and internal reconfiguration of the existing single dwelling, including the adaptation of the existing basement vaults beneath the private forecourt through the lowering of the existing vault floors to provide additional habitable accommodation, external works comprise the installation of two new timber sash windows within the existing front lightwell, the upgrading of the existing timber sash windows with slim-profile double glazing, the replacement of the existing front entrance door with a timber door to match the character of the property, alterations to the front lightwell including Yorkstone paving, and associated internal and external works.
Pending
26/07389/NMA
Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.
Approved
26/07384/FULL
Provision of an external central access corridor to connect blocks B, C and D.
Pending

View Planning Timeline

Ownership

Corporate Ownership53.6%
Overseas OwnershipNo
Lease Term Remaining999+ yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2015-12-15
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£45,172

Population Density23,956 /km²

Owner Occupied36%

Age Distribution

0-15 10%16-64 77%65+ 13%

View Area Profile

Schools Nearby

St Saviour's CofE Primary School
0.1 mi
Good
Paddington Academy
0.2 mi
Outstanding
St Mary Magdalene & St Stephen's CofE Primary School
0.2 mi
Report card2026
Ofsted no longer awards a single overall grade.
Ark Atwood Primary Academy
0.2 mi
Outstanding

3 of 10 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

19 Castellain Road
-
£1.05M
-
23 Castellain Road
-
£895k
-
23 Castellain Road
-
£800k
-
5 Castellain Road
-
£6.95M
-

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