Flat 3, Castle View Apartments, 1A St Martin's Lane, Lewes, BN7 1UD

UPRN:10033270271Converted Flat1 bedsBuilt -

LeaseholdCouncil Tax: Band BEPC: D (66)

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

Flat 3, Castle View Apartments, 1A St Martin's Lane, Lewes, BN7 1UD

HP Score

/ 100

Strong

Verdict

yesterday

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

Evidence

19 of 21 sources

Sale Estimate

£258,000

£245k - £271kHigh

Estimate

£258k

Range

£245k – £271k

Rent Estimate (pcm)

£850

£750 - £950

Monthly

£850

Yield

4.08%

Verdict

Derived from HomePortfolio scores

Flat 3 earns an INVESTIGATE rating with HP Score 80/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is low. Walkability is excellent (94/100). 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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

80/ 100

Strong

Investment Score

63/ 100

Moderate

Crime Score

29/ 100

Moderate

Walkability

94/ 100

Excellent

Transit & Bike

Transit 31Bike 65

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 2 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: leasehold with no service charge disclosed - the stress test assumes GBP 0. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +3.1% (HIGH), sold-comps +16.4%, £/sqft +16.5%] → 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 (HIGH confidence) · snapshot 12 Oct 2026
- valuation_snapshotsestimate for 10033270271· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 22.7%· as of 3 Nov 2026
Rental economics0/40
gross yield 4.1%; range width penalty ×0.73
- valuation_snapshotsrent estimate 850/mo (range 750-950)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -560/mo, -66% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing; leasehold with no service charge disclosed - the stress assumes GBP 0
- underwriting_assumptionscosts not disclosed by the advert· as of 2 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 1 price cut(s), 147 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 2 Nov 2026
Risk & liquidity14.6/15
230 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

£187,500£287,500

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£250,000

At the asking price

Monthly rent£850/mo

Evidenced range £750-£950

Interest rate5.4%

Loan to value75%

Cash required: £78,800
Net cash flow: -£255/mo
Cash on cash: -3.9%
Score at this price: 17

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.01 - 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 10033270271Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 22.7%Valuation edge · as of 3 Nov 2026
valuation_snapshotsrent estimate 850/mo (range 750-950)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 2 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 2 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 850/mo (range 750-950)
Stress margin needs verification before you rely on it
costs not disclosed by the advert

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£258,000

Rent Estimate (pcm)£850

Gross Yield4.08%

1y Growth+12.1%

3y Growth-0.0%

5y Growth+0.1%

10y Growth+2.1%

Last Sold Price£240,000 (2024-10-29)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonModerate
MiningLow
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

3BN7 1UD

Approval Rate

100%12mo

Development

low

SDNP/26/04215/TPO
T1 - Sycamore - crown lift low secondary limbs up to 7m height by removing approximately 2m to growth points, selective crown thin by up to 10%, remove crossing branches, superfluous growth and deadwood
Pending
SDNP/26/04218/NMA
Non Material Amendment - To amend the length of the extension from 3m to 3.3m.
Pending
SDNP/26/04210/TCA
T1 - Walnut - Remove a single branch that runs parallel to the garden boundary
Pending

View Planning Timeline

Ownership

Corporate Ownership61.8%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2024-10-29
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

18 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£33,088

Population Density1,025 /km²

Owner Occupied72%

Age Distribution

0-15 14%16-64 60%65+ 26%

View Area Profile

Schools Nearby

Lewes Old Grammar School
0.1 mi
Inspected by ISI
Western Road Community Primary School
0.2 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Southover CofE Primary School
0.2 mi
Good
Priory School
0.5 mi
Good

2 of 11 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

Castle View Apartments, 1A St Martins Lane
-
£255k
-
Castle View Apartments, 1A St Martins Lane
-
£260k
-
8 St Martins Lane
-
£932k
-
Castle View Apartments, 1A St Martins Lane
-
£240k
-

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