12 Observatory Road, Blackburn, BB2 3HE

UPRN:100010751857Semi-Detached House2 bedsBuilt 1950-1966

LeaseholdCouncil Tax: Band BEPC: C (69)

Data freshness:Listing· freshPlanning· 6mo agoOwnership· freshRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

HP Score

/ 100

Mixed

Verdict

4 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£156,000

£140k - £171kMedium

Estimate

£156k

Range

£140k – £171k

Rent Estimate (pcm)

£950

£900 - £1k

Monthly

£950

Yield

7.60%

Verdict

Derived from HomePortfolio scores

12 Observatory Road earns an INVESTIGATE rating with HP Score 74/100. Investment score 69/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (47/100). 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

74/ 100

Mixed

Investment Score

69/ 100

Moderate

Crime Score

18/ 100

Moderate

Walkability

47/ 100

Mixed

Transit & Bike

Transit 27Bike 36

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 10 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 +3.8% (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 Nov 2026
- valuation_snapshotsestimate for 100010751857· as of 9 Nov 2026
Rental economics20.6/40
gross yield 7.6%; range width penalty ×0.99
- valuation_snapshotsrent estimate 950/mo (range 900-1000)· as of 9 Nov 2026· verify before relying on this
- listing_factslisting text signals condition works - budget before trusting any yield· as of 10 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -65/mo, -7% 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 10 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 53 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 10 Nov 2026
Risk & liquidity12.9/15
607 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

£112,500£172,500

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£150,000

At the asking price

Monthly rent£950/mo

Evidenced range £900-£1,000

Interest rate5.4%

Loan to value75%

Cash required: £46,800
Net cash flow: £151/mo
Cash on cash: 3.9%
Score at this price: 34

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.88 - 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 100010751857Valuation edge · as of 9 Nov 2026
valuation_snapshotsrent estimate 950/mo (range 900-1000)Rental economics · as of 9 Nov 2026 · verify before relying on this
listing_factslisting text signals condition works - budget before trusting any yieldRental economics · as of 10 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 10 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 10 Nov 2026

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 950/mo (range 900-1000)
Rental economics needs verification before you rely on it
listing text signals condition works - budget before trusting any yield

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. 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.
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£156,000

Rent Estimate (pcm)£950

Gross Yield7.60%

1y Growth-

3y Growth+0.7%

5y Growth+1.1%

10y Growth+4.0%

Last Sold Price£81,000 (2015-05-29)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningUnknown
LandslideModerate
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1BB2 3HE

Approval Rate

100%12mo

Development

low

10/26/0478
Erection of 1No detached self-build house with associated external works and parking
Pending
10/26/0448
Proposed replacement of existing conservatory with single storey rear extension and erection of single storey extension to the side
Pending
10/26/0423
Erection of single storey rear extension. Max length 3.5m, eaves height 3m, ridge height 4m and rear corner infill extension.
Approved

View Planning Timeline

Ownership

Corporate Ownership76.6%
Overseas OwnershipNo
Lease Term Remaining999+ yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2015-05-29
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

12 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£27,502

Population Density-

Owner Occupied66%

Age Distribution

0-15 21%16-64 65%65+ 14%

View Area Profile

Schools Nearby

Blackburn Central High School
0.2 mi
Good
Markazul Uloom
0.3 mi
Report card2026
Ofsted no longer awards a single overall grade.
Noorul Uloom
0.3 mi
Good
St Mary's and St Joseph's Roman Catholic Primary School Blackburn
0.3 mi
Good

2 of 7 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

3 Observatory Road
-
£125k
-
37 Observatory Road
-
£185k
-
13 Observatory Road
-
£110k
-
40 Observatory Road
-
£176k
-

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