11 Castle Road, Southsea, PO5 3DE

UPRN:1775010867Semi-Detached House3 bedsBuilt 1950-1966

FreeholdCouncil Tax: Band CEPC: D (63)

Data freshness:Listing· freshPlanning· 4mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

HP Score

/ 100

Strong

Verdict

3 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£442,000

£419k - £464kHigh

Estimate

£442k

Range

£419k – £464k

Rent Estimate (pcm)

£2,450

£2k - £3k

Monthly

£2,450

Yield

7.54%

Verdict

Derived from HomePortfolio scores

11 Castle Road earns an INVESTIGATE rating with HP Score 77/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is low. Walkability is excellent (92/100). 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 addressDefra strategic noise mapping, England Round 4 (Contains Defra data © Crown copyright and database right 2023-2024, Open Government Licence v3.0)Walk ScoreONS 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

63/ 100

Moderate

Crime Score

31/ 100

Moderate

Walkability

92/ 100

Excellent

Transit & Bike

Transit 32Bike 75

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesListing checked 5 Nov 2026

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

Valuation edge0/15
claims [AVM +11.8% (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 13 Oct 2026
- valuation_snapshotsestimate for 1775010867· as of 13 Oct 2026
Rental economics19.4/40
gross yield 7.5%; range width penalty ×0.96
- valuation_snapshotsrent estimate 2450/mo (range 2300-2600)· as of 13 Oct 2026· verify before relying on this
Stress margin1/30
stressed cash flow +25/mo, +1% 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 5 Nov 2026
Seller motivationNot scored
context, not scored: 2 price cut(s), 187 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 & liquidity14.6/15
243 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 sensitivityScores 70+ up to £292,500

£292,500£448,500

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£390,000

At the asking price

Monthly rent£2,450/mo

Evidenced range £2,300-£2,600

Interest rate5.4%

Loan to value75%

Cash required: £127,800
Net cash flow: £380/mo
Cash on cash: 3.6%
Score at this price: 35

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.86 - 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 1775010867Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 2450/mo (range 2300-2600)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

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 2450/mo (range 2300-2600)
Seller motivation could not be scored
context, not scored: 2 price cut(s), 187 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.
2 price cut(s) recorded on the listing history.
3. Set your walk-away price before viewing - above £292,500 the deal stops scoring well.
Computed by re-running the score at higher prices.
4. 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.

Valuation & Market

Sale Estimate£442,000

Rent Estimate (pcm)£2,450

Gross Yield7.54%

1y Growth-

3y Growth+0.7%

5y Growth+1.9%

10y Growth+3.2%

Last Sold Price£236,000 (2007-10-26)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0PO5 3DE

Approval Rate

-12mo

Development

low

26/00484/CPE
Application for Certificate of Lawful Development for existing use as four residential apartments
Pending
26/00469/FUL
Construction of rear extension at ground floor level to create one additional apartment, including relocation of refuse and cycle storage and provision of ground floor balconies and first floor terrace.
Pending
26/00461/LBC
The proposal is to remove a dated PVC 1960s extension (circa. 8m2) to the rear of a Grade II listed Victorian building and replace with a timber verandah and door set, creating balcony space and improving the aesthetic from the rear of the property.
Pending

View Planning Timeline