21 Seymour Avenue, Parc Seymour, Penhow, Caldicot, NP26 3AG

UPRN:100100686242Detached House3 bedsBuilt 1967-1975

FreeholdCouncil Tax: -EPC: C (71)

Data freshness:Listing· freshPlanning· 4mo agoEPC· 6mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

21 Seymour Avenue, Parc Seymour, Penhow, Caldicot, NP26 3AG

HP Score

/ 100

Strong

Verdict

3 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£662,000

£596k - £729kMedium

Estimate

£662k

Range

£596k – £729k

Rent Estimate (pcm)

£2,200

£2k - £2k

Monthly

£2,200

Yield

4.06%

Verdict

Derived from HomePortfolio scores

21 Seymour Avenue earns an INVESTIGATE rating with HP Score 77/100. 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

77/ 100

Strong

Investment Score

71/ 100

High

Crime Score

9/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 5 Nov 2026

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

Check before relying on this score: the advert has 5 bedrooms but the valuation snapshot describes 3 - an extension, conversion or HMO the evidence does not reflect, or a different home. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +1.8% (MEDIUM), sold-comps +4.1%, £/sqft +4.2%] → measured edge +0.50pp 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 (MEDIUM confidence) · snapshot 13 Oct 2026
- valuation_snapshotsestimate for 100100686242· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 19.5%· as of 1 Nov 2026
Rental economics0/40
gross yield 4.1%; range width penalty ×0.75
- valuation_snapshotsrent estimate 2200/mo (range 1950-2450)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,255/mo, -57% 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 5 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 79 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 5 Nov 2026
Risk & liquidity12.8/15
255 sales/12mo in area; valuation range width 20%
- 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

£487,500£747,500

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£650,000

At the asking price

Monthly rent£2,200/mo

Evidenced range £1,950-£2,450

Interest rate5.4%

Loan to value75%

Cash required: £218,800
Net cash flow: -£671/mo
Cash on cash: -3.7%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.00 - below 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 100100686242Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 19.5%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 2200/mo (range 1950-2450)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 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 2200/mo (range 1950-2450)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 79 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. 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£662,000

Rent Estimate (pcm)£2,200

Gross Yield4.06%

1y Growth-

3y Growth-1.0%

5y Growth+2.1%

10y Growth+4.9%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningLow
LandslideLow
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0NP26 3AG

Approval Rate

-12mo

Development

low

26/0727
RESTORE LISTED BUILDING BACK TO A SINGLE DWELLING AND PROVIDE REPLACEMENT JOINERY WHERE APPROPRIATE
Pending
26/0647
LAWFUL DEVELOPMENT CERTIFICATE (EXISTING) FOR RESIDENTIAL USE OF LAND
Rejected
26/0611
PROPOSED DEMOLITION OF THE EXISTING SINGLE STOREY SIDE EXTENSION AND THE ERECTION OF A TWO STOREY SIDE EXTENSION
Rejected

View Planning Timeline