21 Heritage Drive, Cardiff, CF5 5QD

UPRN:10003563775Detached House4 bedsBuilt 2003-2006

FreeholdCouncil Tax: -EPC: C (76)

Data freshness:Price Paid· freshPlanning· 4mo agoEPC· 3mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021

HP Score

/ 100

Mixed

Verdict

5 days ago

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

Evidence

15 of 21 sources

Sale Estimate

£327,000

£310k - £343kHigh

Estimate

£327k

Range

£310k – £343k

Rent Estimate (pcm)

£1,450

£1k - £2k

Monthly

£1,450

Yield

5.52%

Verdict

Derived from HomePortfolio scores

21 Heritage Drive earns an INVESTIGATE rating with HP Score 74/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is 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 covenantsHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

74/ 100

Mixed

Investment Score

67/ 100

Moderate

Crime Score

24/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 30 Oct 2026

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

Valuation edge0/15
claims [AVM +3.7% (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 9 Oct 2026
- valuation_snapshotsestimate for 10003563775· as of 9 Oct 2026
Rental economics3.6/40
gross yield 5.5%; range width penalty ×0.86
- valuation_snapshotsrent estimate 1450/mo (range 1300-1550)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -393/mo, -27% 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 30 Oct 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 176 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 30 Oct 2026
Risk & liquidity14.6/15
682 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

£236,000£362,000

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£315,000

At the asking price

Monthly rent£1,450/mo

Evidenced range £1,300-£1,550

Interest rate5.4%

Loan to value75%

Cash required: £101,550
Net cash flow: -£59/mo
Cash on cash: -0.7%
Score at this price: 18

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.36 - 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 10003563775Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 1450/mo (range 1300-1550)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 30 Oct 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 30 Oct 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 1450/mo (range 1300-1550)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 176 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. 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.
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£327,000

Rent Estimate (pcm)£1,450

Gross Yield5.52%

1y Growth-6.9%

3y Growth+2.4%

5y Growth+2.6%

10y Growth+5.0%

Last Sold Price£165,000 (2010-03-12)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningLow
LandslideLow
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF5 5QD

Approval Rate

-12mo

Development

low

26/01985/VAR
SINGLE STOREY REAR EXTENSION AND ASSOCIATED WORKS (Approved 20/10/2021) - 21/01936/DCH Variation of Conditions 1 and 2 of 21/01936/DCH to amend the approved plans as follows: 1) The development permitted shall be begun before the expiration of five years from the date of this planning permission. 2) The development shall be carried out in accordance with the following approved plans: Drawing No. A101c, Proposed Plans and Elevations.
Pending
26/01758/CLPUD
Proposed single-storey rear extension
Approved
26/01674/FUL
Installation of Portakabin UK093 Ultima modules to form the New Family Centre, located at Pencaerau Primary School, for the duration of 3 Years
Pending

View Planning Timeline