40 Brook Street, Blaenrhondda, Treorchy, CF42 5SB

UPRN:100100719838Semi-Detached House2 bedsBuilt 1900-1929

FreeholdCouncil Tax: -EPC: G (14)

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

40 Brook Street, Blaenrhondda, Treorchy, CF42 5SB

HP Score

/ 100

Mixed

Verdict

2 days ago

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

Evidence

16 of 21 sources

Sale Estimate

£133,000

£126k - £140kHigh

Estimate

£133k

Range

£126k – £140k

Rent Estimate (pcm)

£1,250

£1k - £1k

Monthly

£1,250

Yield

11.54%

Verdict

Derived from HomePortfolio scores

40 Brook Street earns an INVESTIGATE rating with HP Score 74/100. Investment score 62/100 reflects moderate fundamentals. Crime intensity is very low. 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 addressONS Census 2021Police.ukHM Land Registry company ownershipHM Land Registry covenantsHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

74/ 100

Mixed

Investment Score

62/ 100

Moderate

Crime Score

13/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesListing checked 3 Nov 2026

Fewer independent sources agree, or a component could not be scored.

Valuation edge0/15
claims [AVM +2.3% (HIGH), sold-comps -15.0%, £/sqft -15.0%] → 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 12 Oct 2026
- valuation_snapshotsestimate for 100100719838· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.3%· as of 25 Oct 2026
Rental economics40/40
gross yield 11.5%; range width penalty ×1.00
- valuation_snapshotsrent estimate 1250/mo (range 1200-1300)· as of 12 Oct 2026· verify before relying on this
Stress margin19.2/30
stressed cash flow +241/mo, +19% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); passes the stress
- underwriting_assumptionscosts not disclosed by the advert· as of 3 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 359 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 3 Nov 2026
Risk & liquidity14.5/15
147 sales/12mo in area; valuation range width 11%
- 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 sensitivityScores 80+ up to £110,500

£97,500£149,500

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£129,950

At the asking price

Monthly rent£1,250/mo

Evidenced range £1,200-£1,300

Interest rate5.4%

Loan to value75%

Cash required: £40,385
Net cash flow: £427/mo
Cash on cash: 12.7%
Score at this price: 74

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.85 - 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 100100719838Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.3%Valuation edge · as of 25 Oct 2026
valuation_snapshotsrent estimate 1250/mo (range 1200-1300)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 3 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 3 Nov 2026

Risks

What could kill this deal

Score confidence is reduced
fewer independent sources agree, or a component could not be scored
Rental economics needs verification before you rely on it
rent estimate 1250/mo (range 1200-1300)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 359 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. Set your walk-away price before viewing - above £110,500 the deal stops scoring well.
Computed by re-running the score at higher prices.
3. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£133,000

Rent Estimate (pcm)£1,250

Gross Yield11.54%

1y Growth-16.8%

3y Growth+1.3%

5y Growth+3.3%

10y Growth+5.8%

Last Sold Price£50,000 (2026-03-09)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningLow
LandslideSignificant
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF42 5SB

Approval Rate

-12mo

Development

low

26/0663/TEL
British Telecommunications Plc intends to install fixed line broadband electronic communications apparatus
Approved

View Planning Timeline

Ownership

Corporate Ownership94.2%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2026-03-09
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

4 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£29,802

Population Density-

Owner Occupied66%

Age Distribution

0-15 19%16-64 60%65+ 21%

View Area Profile

Schools Nearby

Penpych Community Primary School
0.5 mi
-
Penyrenglyn Primary School
1.9 mi
-
Ysgol G.G. Ynyswen
2.3 mi
-
Treorchy Comprehensive School
2.9 mi
-

View All Schools

Comparables

View All

23 Brook Street
-
£187k
-
40 Brook Street
-
£50k
-
18 Brook Street
-
£95k
-
23 Brook Street
-
£60k
-

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