10 Martholme Lane, Great Harwood, Blackburn, BB6 7UJ

UPRN:100010450187Semi-Detached House4 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band DEPC: D (57)

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

10 Martholme Lane, Great Harwood, Blackburn, BB6 7UJ

HP Score

/ 100

Mixed

Verdict

5 days ago

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

Evidence

16 of 21 sources

Sale Estimate

£438,000

£395k - £482kMedium

Estimate

£438k

Range

£395k – £482k

Rent Estimate (pcm)

£2,500

£2k - £3k

Monthly

£2,500

Yield

6.67%

Verdict

Derived from HomePortfolio scores

10 Martholme Lane earns an INVESTIGATE rating with HP Score 63/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (21/100). 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

63/ 100

Mixed

Investment Score

60/ 100

Moderate

Crime Score

24/ 100

Moderate

Walkability

21/ 100

Low

Transit & Bike

Transit 3Bike 13

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 2 Nov 2026

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

Valuation edge0/15
claims [AVM -2.7% (MEDIUM), sold-comps -48.0%, £/sqft -48.2%] → 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 12 Oct 2026
- valuation_snapshotsestimate for 100010450187· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 16.6%· as of 1 Nov 2026
Rental economics12.8/40
gross yield 6.7%; range width penalty ×0.96
- valuation_snapshotsrent estimate 2500/mo (range 2350-2650)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -191/mo, -8% 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 2 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 67 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 2 Nov 2026
Risk & liquidity12.9/15
216 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

£337,500£517,500

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£450,000

At the asking price

Monthly rent£2,500/mo

Evidenced range £2,350-£2,650

Interest rate5.4%

Loan to value75%

Cash required: £148,800
Net cash flow: £212/mo
Cash on cash: 1.7%
Score at this price: 26

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.65 - 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 100010450187Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 16.6%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 2500/mo (range 2350-2650)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 2 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 2 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 2500/mo (range 2350-2650)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 67 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£438,000

Rent Estimate (pcm)£2,500

Gross Yield6.67%

1y Growth-

3y Growth-3.9%

5y Growth-1.6%

10y Growth+0.3%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningLow
LandslideModerate
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

3BB6 7UJ

Approval Rate

-12mo

Development

low

11/26/0450
Works to TPO Trees: 1983 No.4- T23- To prune tree to facilitate essential electrical substation works
Pending
11/26/0439
Discharge of Condition: Discharge of conditions 3 (Construction Method Statement), 5 (Surface Water Disposal), 6 (Natural England Bat Mitigation), 7 (Supervised Ecological Works), 8 (Sparrow and Bat Box details), and 10 (Lighting details) pursuant to planning permission 11/25/0166.
Pending
11/26/0400
Variation of Condition: 2 (approved plans) pursuant to planning permission reference 11/25/0166
Conditions

View Planning Timeline

Ownership

Corporate Ownership49.6%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

22 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£29,647

Population Density728 /km²

Owner Occupied75%

Age Distribution

0-15 13%16-64 51%65+ 36%

View Area Profile

Schools Nearby

St Hubert's Roman Catholic Primary School, Great Harwood
0.9 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.
Great Harwood St Bartholomew's Parish Church of England Voluntary Aided Primary School
1.2 mi
Good
Read St John's CofE Primary School
1.3 mi
Good
Altham St James Church of England Primary School
1.4 mi
Report card2026
Ofsted no longer awards a single overall grade.

2 of 13 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

8 Martholme Lane
-
£450k
-
Martholme Farm Bungalow Martholme Lane
-
£165k
-
The Bungalow Martholme Lane
-
£695k
-
12 Martholme Lane
-
£285k
-

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