Flat 31, Cornerstone House, 120 London Road, Portsmouth, PO2 0NB

UPRN:1775123249Converted Flat1 bedsBuilt -

LeaseholdCouncil Tax: Band AEPC: E (51)

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

Flat 31, Cornerstone House, 120 London Road, Portsmouth, PO2 0NB

HP Score

/ 100

Mixed

Verdict

2 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£129,000

£123k - £135kHigh

Estimate

£129k

Range

£123k – £135k

Rent Estimate (pcm)

£850

£800 - £900

Monthly

£850

Yield

9.27%

Verdict

Derived from HomePortfolio scores

Flat 31 earns an INVESTIGATE rating with HP Score 61/100. Investment score 56/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (85/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. 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

61/ 100

Mixed

Investment Score

56/ 100

Moderate

Crime Score

82/ 100

Elevated

Walkability

85/ 100

Excellent

Transit & Bike

Transit 26Bike 73

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesListing checked 4 Nov 2026

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

Valuation edge0/15
claims [AVM +14.7% (HIGH), sold-comps -6.8%, £/sqft -6.9%] → 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
Market estimate used (HIGH confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 1775123249· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 9.4%· as of 25 Oct 2026
Rental economics33/40
gross yield 9.3%; range width penalty ×0.96
- valuation_snapshotsrent estimate 850/mo (range 800-900)· as of 9 Oct 2026· verify before relying on this
Stress margin1.4/30
stressed cash flow +12/mo, +1% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); passes the stress
- listing_factsservice charge / ground rent from the advert· as of 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 39 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 4 Nov 2026
Risk & liquidity14.8/15
408 sales/12mo in area; valuation range width 9%
- 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

£82,500£126,500

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£110,000

At the asking price

Monthly rent£850/mo

Evidenced range £800-£900

Interest rate5.4%

Loan to value75%

Cash required: £34,300
Net cash flow: £217/mo
Cash on cash: 7.6%
Score at this price: 49

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.29 - 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 1775123249Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 9.4%Valuation edge · as of 25 Oct 2026
valuation_snapshotsrent estimate 850/mo (range 800-900)Rental economics · as of 9 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 4 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 Nov 2026

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 850/mo (range 800-900)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 39 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£129,000

Rent Estimate (pcm)£850

Gross Yield9.27%

1y Growth-16.7%

3y Growth-0.1%

5y Growth+2.3%

10y Growth+3.4%

Last Sold Price£120,000 (2017-09-01)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0PO2 0NB

Approval Rate

-12mo

Development

low

26/00486/FUL
Change of use from dwellinghouse (Class C3), to seven bedroom/seven person House in Multiple Occupation (Sui generis)
Pending
26/00468/CPL
Application for Certificate of Lawful Development for the proposed construction of dormer windows rear roofslopes
Pending
26/00450/HOU
Construction of garage extension and installation of sliding gate
Pending

View Planning Timeline

Ownership

Corporate Ownership78.6%
Overseas OwnershipNo
Lease Term Remaining114 yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2017-09-01
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

19 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£30,962

Population Density10,323 /km²

Owner Occupied44%

Age Distribution

0-15 21%16-64 69%65+ 10%

View Area Profile

Schools Nearby

Corpus Christi Catholic Primary School
0.1 mi
Good
Stamshaw Infant Academy
0.2 mi
Good
New Horizons Primary School
0.4 mi
Good
King's Academy College Park (Junior)
0.4 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.

2 of 9 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

Cornerstone House, 120 London Road
-
£110k
-
Cornerstone House, 120 London Road
-
£105k
-
Cornerstone House, 120 London Road
-
£126k
-
Cornerstone House, 120 London Road
-
£167k
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN