Flat 21, South Grove House, South Grove, London, N6 6LP

UPRN:5019045Flat/Maisonette2 bedsBuilt 1930-1949

LeaseholdCouncil Tax: Band FEPC: C (69)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 3mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 3mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 6mo ago

Flat 21, South Grove House, South Grove, London, N6 6LP

HP Score

/ 100

Strong

Verdict

today

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

Evidence

17 of 21 sources

Sale Estimate

£996,000

£946k - £1.05MHigh

Estimate

£996k

Range

£946k – £1.05M

Rent Estimate (pcm)

£3,600

£3k - £4k

Monthly

£3,600

Yield

4.67%

Verdict

Derived from HomePortfolio scores

Flat 21 earns an INVESTIGATE rating with HP Score 79/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is low. 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 listingsMarket 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

79/ 100

Strong

Investment Score

63/ 100

Moderate

Crime Score

28/ 100

Moderate

Walkability

85/ 100

Excellent

Transit & Bike

Transit 36Bike 71

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 4 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 +7.1% (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 5019045· as of 13 Oct 2026
Rental economics0/40
gross yield 4.7%; range width penalty ×0.78
- valuation_snapshotsrent estimate 3600/mo (range 3200-3950)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,604/mo, -45% 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 4 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 138 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 & liquidity14.6/15
153 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

£694,000£1,064,000

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£925,000

At the asking price

Monthly rent£3,600/mo

Evidenced range £3,200-£3,950

Interest rate5.4%

Loan to value75%

Cash required: £315,050
Net cash flow: -£630/mo
Cash on cash: -2.4%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.15 - 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 5019045Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 3600/mo (range 3200-3950)Rental economics · as of 13 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
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

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 3600/mo (range 3200-3950)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 138 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.
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£996,000

Rent Estimate (pcm)£3,600

Gross Yield4.67%

1y Growth-

3y Growth-4.4%

5y Growth-2.5%

10y Growth-0.7%

Last Sold Price£885,000 (2014-08-01)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseBelow 40 dB

View Full Risk Report

Planning Activity

Recent Apps

0N6 6LP

Approval Rate

-12mo

Development

low

HGY/2026/2995
T1: Ash (18m): Reduce overhang back to boundary removing 3m of growth to reduce risk of failure T2: Eucalyptus (8m): Pollard to 4m (removing 4m of growth) to keep trees at a size suitable for its location and as part of regular maintenance
Pending
2026/4821/T
EAST CEMETERY: 1 x Elm (T1) - Fell to ground level.
Pending
2026/4815/T
WEST CEMETERY: 1 x Cherry tree (Prunus) (T052) - Fell to ground level.
Pending

View Planning Timeline