Trewithian House, Carmarthen, SA32 7DU

UPRN:10004852744Detached HouseBeds -Built before 1900

FreeholdCouncil Tax: -EPC: G (11)

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

HP Score

/ 100

Mixed

Verdict

6 days ago

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

Evidence

15 of 21 sources

Sale Estimate

£343,000

£274k - £412kLow

Estimate

£343k

Range

£274k – £412k

Rent Estimate (pcm)

£1,100

£950 - £1k

Monthly

£1,100

Yield

1.66%

Verdict

Derived from HomePortfolio scores

Trewithian House earns an INVESTIGATE rating with HP Score 73/100. Investment score 64/100 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 NationsMarket 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

73/ 100

Mixed

Investment Score

64/ 100

Moderate

Crime Score

10/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Not scored as an opportunity

We will not put a number on this one.

headline score requires valuation_edge (estimate confidence LOW below scoring floor)

What we could establish

Rental economics0/40
gross yield 1.7%; range width penalty ×0.75
- valuation_snapshotsrent estimate 1100/mo (range 950-1200)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,675/mo, -243% 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
Risk & liquidity9.2/15
61 sales/12mo in area; valuation range width 40%
- property_intelligencetransactions_12mo

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£795,000

At the asking price

Monthly rent£1,100/mo

Evidenced range £950-£1,200

Interest rate5.4%

Loan to value75%

Cash required: £269,550
Net cash flow: -£1,922/mo
Cash on cash: -8.6%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.41 - 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_snapshotsrent estimate 1100/mo (range 950-1200)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
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth Valuation methodology

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Valuation edge could not be scored
estimate confidence LOW below scoring floor
Rental economics needs verification before you rely on it
rent estimate 1100/mo (range 950-1200)

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. Fill the valuation edge gap before relying on the score.
estimate confidence LOW below scoring floor
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£343,000

Rent Estimate (pcm)£1,100

Gross Yield1.66%

1y Growth+21.3%

3y Growth-1.7%

5y Growth+0.0%

10y Growth+3.5%

Last Sold Price£210,000 (2019-06-14)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningLow
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0SA32 7DU

Approval Rate

-12mo

Development

low

PL/09344
Storage of farm machinery, equipment, husbandry and animal feeds
Pending
PL/09292
Retrospective application for the erection of building for storage of agricultural implements
Pending
PL/08902
Partial Discharge of Condition 3 on W/39159 (Watching Brief Report)
Conditions

View Planning Timeline