Flat 1, 40 Monthermer Road, Cathays, Cardiff, CF24 4RA

UPRN:10013749246Flat/Maisonette1 bedsBuilt 1900-1929

FreeholdCouncil Tax: -EPC: C (70)

Data freshness:Listing· freshPlanning· 3mo agoOwnership· 1mo agoEPC· 6mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

Flat 1, 40 Monthermer Road, Cathays, Cardiff, CF24 4RA

HP Score

/ 100

Strong

Verdict

4 days ago

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed

Evidence

17 of 21 sources

Sale Estimate

£139,000

£111k - £167kLow

Estimate

£139k

Range

£111k – £167k

Rent Estimate (pcm)

£600

£550 - £650

Monthly

£600

Yield

5.33%

Verdict

Derived from HomePortfolio scores

Flat 1 earns an INVESTIGATE rating with HP Score 84/100. Investment score 71/100 reflects strong 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)ONS 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

84/ 100

Strong

Investment Score

71/ 100

High

Crime Score

14/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 6 Nov 2026

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

Valuation edge0/15
claims [sold-comps -23.9%, £/sqft -23.9%] → 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; AVM excluded (estimate confidence LOW below scoring floor)
estimate confidence LOW below scoring floor · snapshot 10 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 14.9%· as of 21 Oct 2026
Rental economics2.3/40
gross yield 5.3%; range width penalty ×0.87
- valuation_snapshotsrent estimate 600/mo (range 550-650)· as of 10 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -226/mo, -38% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 6 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 349 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 6 Nov 2026
Risk & liquidity9.2/15
447 sales/12mo in area; valuation range width 40%
- 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

£101,000£155,000

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£135,000

At the asking price

Monthly rent£600/mo

Evidenced range £550-£650

Interest rate5.4%

Loan to value75%

Cash required: £42,000
Net cash flow: -£40/mo
Cash on cash: -1.1%
Score at this price: 12

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.32 - 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

property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 14.9%Valuation edge · as of 21 Oct 2026
valuation_snapshotsrent estimate 600/mo (range 550-650)Rental economics · as of 10 Nov 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 6 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 6 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 600/mo (range 550-650)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 349 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£139,000

Rent Estimate (pcm)£600

Gross Yield5.33%

1y Growth-

3y Growth+2.5%

5y Growth+3.4%

10y Growth+3.9%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningLow
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF24 4RA

Approval Rate

-12mo

Development

low

26/02297/HSE
Proposed 2 storey rear extension, enlarge front porch, alterations to side windows, demonition of garage
Pending
26/02271/VAR
Proposed Rear Extension (Approved 12/09/2023 - 23/00804/HSE) Variation of Condition 2 (approved plans) of 23/00804/HSE - To reduce the scope of works to only include the rear single storey lean to element with the approved side return extension to be omitted along with proposed first floor annex works
Pending
26/02240/HSE
Removal of conservatory, and replacement with a single-storey wrap around flat roof extension.
Pending

View Planning Timeline