47 Blackwell Drive, Watford, WD19 4HP

UPRN:100080929170Semi-Detached House3 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band EEPC: D (66)

Data freshness:Planning· 4mo agoOwnership· 1mo agoEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

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

£667,000

£634k - £700kHigh

Estimate

£667k

Range

£634k – £700k

Rent Estimate (pcm)

£3,300

£3k - £4k

Monthly

£3,300

Yield

5.91%

Verdict

Derived from HomePortfolio scores

47 Blackwell Drive earns an INVESTIGATE rating with HP Score 70/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (53/100). 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)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 covenantsHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

70/ 100

Mixed

Investment Score

63/ 100

Moderate

Crime Score

23/ 100

Moderate

Walkability

53/ 100

Moderate

Transit & Bike

Transit 18Bike 60

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

listing is 'Sold subject to contract' - sale already progressing, not an actionable opportunity

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£670,000

At the asking price

Monthly rent£3,300/mo

Evidenced range £3,100-£3,550

Interest rate5.4%

Loan to value75%

Cash required: £225,800
Net cash flow: £23/mo
Cash on cash: 0.1%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.46 - 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£667,000

Rent Estimate (pcm)£3,300

Gross Yield5.91%

1y Growth-

3y Growth+2.2%

5y Growth+2.1%

10y Growth+1.8%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningSignificant
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0WD19 4HP

Approval Rate

-12mo

Development

low

26/00878/DISCON
Details submitted for Condition 18. (vehicular access) pursuant to planning permission 24/01103/FULM
Pending
26/00877/DISCON
Details submitted for Condition 26. and 27 (hard and soft landscaping) pursuant to planning permission 24/01103/FULM
Pending
26/00875/DISCON
Details submitted for Condition 25 (Landscaping and Biodiversity) pursuant to planning permission 19/00778/FULM
Pending

View Planning Timeline

Ownership

Corporate Ownership69.7%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

10 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£37,172

Population Density4,168 /km²

Owner Occupied45%

Age Distribution

0-15 20%16-64 64%65+ 16%

View Area Profile

Schools Nearby

Oxhey Nursery School
0.1 mi
GoodConcerns
Bromet Primary School
0.4 mi
Report card2026
Ofsted no longer awards a single overall grade.
Field Junior School
0.4 mi
-
Watford Field School (Infant & Nursery)
0.4 mi
Report card2026
Ofsted no longer awards a single overall grade.

4 of 9 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

1 Blackwell Drive
-
£309k
-
41 Blackwell Drive
-
£465k
-
1 Blackwell Drive
-
£420k
-
21 Blackwell Drive
-
£430k
-

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