Flat D, 110 Thornlaw Road, London, SE27 0SB

UPRN:200000483776Flat/Maisonette1 bedsBuilt before 1900

Tenure: -Council Tax: -EPC: C (69)

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

Flat D, 110 Thornlaw Road, London, SE27 0SB

HP Score

/ 100

Strong

Verdict

4 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£369,000

£332k - £406kMedium

Estimate

£369k

Range

£332k – £406k

Rent Estimate (pcm)

£1,550

£1k - £2k

Monthly

£1,550

Yield

5.31%

Verdict

Derived from HomePortfolio scores

Flat D earns an INVESTIGATE rating with HP Score 81/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is low. Walkability is good (79/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. 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)Defra 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

81/ 100

Strong

Investment Score

73/ 100

High

Crime Score

22/ 100

Moderate

Walkability

79/ 100

High

Transit & Bike

Transit 52Bike 75

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 5 Nov 2026

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

Valuation edge0/15
claims [AVM +5.1% (MEDIUM), sold-comps -19.5%, £/sqft -19.3%] → 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 (MEDIUM confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 200000483776· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 5.9%· as of 4 Nov 2026
Rental economics2.2/40
gross yield 5.3%; range width penalty ×0.88
- valuation_snapshotsrent estimate 1550/mo (range 1450-1700)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -607/mo, -39% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 5 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 55 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
176 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

£262,500£402,500

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£350,000

At the asking price

Monthly rent£1,550/mo

Evidenced range £1,450-£1,700

Interest rate5.4%

Loan to value75%

Cash required: £113,800
Net cash flow: -£108/mo
Cash on cash: -1.1%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.31 - 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 200000483776Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 5.9%Valuation edge · as of 4 Nov 2026
valuation_snapshotsrent estimate 1550/mo (range 1450-1700)Rental economics · as of 9 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from 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 1550/mo (range 1450-1700)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 55 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£369,000

Rent Estimate (pcm)£1,550

Gross Yield5.31%

1y Growth-23.0%

3y Growth+3.2%

5y Growth+0.9%

10y Growth+2.0%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SE27 0SB

Approval Rate

-12mo

Development

low

26/03148/PDE
prior approval for the erection of a single-storey rear extension.
Pending
26/03121/TPO
General tree maintance and repollarding of Lime trees at No 53, 54, 55, 56, 58, 59 and 60.
Pending
26/03080/NMC
Non-Material Amendment Following grant of Planning Permission ref: 22/00137/FUL "Erection of a single storey ground floor rear extension, and new cellar access, together with garage conversion into habitable rooms and replacement of side entrance." granted on 25.03.26 Amendments sought Reduces number of roof lights in ground floor rear extension from 3 to 2 Bi-folding doors in garage conversion replaced with existing door retained and window added. New French doors replace window in garage conversion
Pending

View Planning Timeline