23 Castle Mews, Wellingborough, NN8 1NX

UPRN:10095793005Detached House3 bedsBuilt 2021

Tenure: -Council Tax: Band DEPC: B (84)

Data freshness:Listing· freshPlanning· 4mo agoEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

16 of 21 sources

Sale Estimate

£547,000

£520k - £574kHigh

Estimate

£547k

Range

£520k – £574k

Rent Estimate (pcm)

£2,400

£2k - £3k

Monthly

£2,400

Yield

5.24%

Verdict

Derived from HomePortfolio scores

23 Castle Mews earns an INVESTIGATE rating with HP Score 67/100. Investment score 53/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is excellent (92/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesEPC RegisterPortal listingsMarket 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 company ownershipHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

67/ 100

Mixed

Investment Score

53/ 100

Moderate

Crime Score

57/ 100

Elevated

Walkability

92/ 100

Excellent

Transit & Bike

Transit 31Bike 60

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 7 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 -0.5% (HIGH)] → 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 (HIGH confidence) · snapshot 10 Oct 2026
- valuation_snapshotsestimate for 10095793005· as of 10 Oct 2026
Rental economics1.6/40
gross yield 5.2%; range width penalty ×0.82
- valuation_snapshotsrent estimate 2400/mo (range 2200-2650)· as of 10 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -686/mo, -29% 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 7 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 151 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 7 Nov 2026
Risk & liquidity14.7/15
522 sales/12mo in area; valuation range width 10%
- 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

£412,500£632,500

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£550,000

At the asking price

Monthly rent£2,400/mo

Evidenced range £2,200-£2,650

Interest rate5.4%

Loan to value75%

Cash required: £183,800
Net cash flow: -£195/mo
Cash on cash: -1.3%
Score at this price: 16

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.29 - 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 10095793005Valuation edge · as of 10 Oct 2026
valuation_snapshotsrent estimate 2400/mo (range 2200-2650)Rental economics · as of 10 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 7 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 7 Nov 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 2400/mo (range 2200-2650)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 151 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£547,000

Rent Estimate (pcm)£2,400

Gross Yield5.24%

1y Growth-

3y Growth-2.5%

5y Growth+2.7%

10y Growth+4.8%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0NN8 1NX

Approval Rate

-12mo

Development

low

26/03065/LDP
House of multiple occupancy for 5 people/bedrooms. Minor internal alterations.
Pending
26/03033/FUL
Safeguarding boundary gates and fencing replacement
Pending
26/02962/LDP
Certificate of proposed lawfulness for use of house (Class C3) as childrens home for up to one child, with a manager and two overnight carers working on a rota basis (C2)
Pending

View Planning Timeline

Ownership

Corporate Ownership67.4%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsNone
Lease Type-
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (-)

Mobile 4G/5G Coverage

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£32,882

Population Density-

Owner Occupied61%

Age Distribution

0-15 15%16-64 62%65+ 23%

View Area Profile

Schools Nearby

Refocus
0.1 mi
Good
All Saints CEVA Primary School and Nursery
0.2 mi
Report card2026
Ofsted no longer awards a single overall grade.
Park Junior School, Wellingborough
0.3 mi
Inspected as Park Junior School, Wellingborough (URN 121870) on 18 Jan 2018
Wellingborough School
0.3 mi
Inspected by ISI

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

View All Schools

Comparables

View All

21 Castle Mews
-
£108k
-
6 Castle Mews
-
£115k
-
13 Castle Mews
-
£90k
-
10 Castle Mews
-
£77k
-

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