25 Invention Avenue, Birmingham, B21 9AF

UPRN:10090433632Semi-Detached House3 bedsBuilt 2007-2011

FreeholdCouncil Tax: Band BEPC: C (80)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 3mo agoRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

25 Invention Avenue, Birmingham, B21 9AF

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£269,000

£255k - £282kHigh

Estimate

£269k

Range

£255k – £282k

Rent Estimate (pcm)

£1,550

£1k - £2k

Monthly

£1,550

Yield

6.89%

Verdict

Derived from HomePortfolio scores

25 Invention Avenue earns an INVESTIGATE rating with HP Score 70/100. Investment score 69/100 reflects moderate fundamentals. Crime intensity is moderate. Walkability is good (74/100). 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)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 covenantsHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

70/ 100

Mixed

Investment Score

69/ 100

Moderate

Crime Score

48/ 100

Elevated

Walkability

74/ 100

High

Transit & Bike

Transit 58Bike 59

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 9 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 -0.4% (HIGH), sold-comps -40.6%, £/sqft -40.9%] → 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 11 Nov 2026
- valuation_snapshotsestimate for 10090433632· as of 11 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 10 comps, dispersion 23.8%· as of 12 Nov 2026
Rental economics14.2/40
gross yield 6.9%; range width penalty ×0.94
- valuation_snapshotsrent estimate 1550/mo (range 1450-1650)· as of 11 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -130/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 9 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 128 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 9 Nov 2026
Risk & liquidity14.6/15
150 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

£202,500£310,500

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£270,000

At the asking price

Monthly rent£1,550/mo

Evidenced range £1,450-£1,650

Interest rate5.4%

Loan to value75%

Cash required: £85,800
Net cash flow: £162/mo
Cash on cash: 2.3%
Score at this price: 29

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.70 - 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 10090433632Valuation edge · as of 11 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 10 comps, dispersion 23.8%Valuation edge · as of 12 Nov 2026
valuation_snapshotsrent estimate 1550/mo (range 1450-1650)Rental economics · as of 11 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 9 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 9 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 1550/mo (range 1450-1650)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 128 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. Ask the agent why the price was reduced and whether a previous sale fell through.
1 price cut(s) recorded on the listing history.
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£269,000

Rent Estimate (pcm)£1,550

Gross Yield6.89%

1y Growth-

3y Growth+1.4%

5y Growth+2.5%

10y Growth+5.1%

Last Sold Price£128,245 (2013-07-26)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningSignificant
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0B21 9AF

Approval Rate

-12mo

Development

low

2026/06478/PA
Erection of 6 metre deep single storey rear extension. Maximum height 3.8 metres, eaves height 2.9 metres
Pending
2026/05994/PA
Erection of single storey front elevation and rear elevation, accompanied by minor internal amendments.
Pending
2026/05942/PA
Erection of single and two storey side and rear extension and dormer windows to rear elevation
Pending

View Planning Timeline