Flat 1, Sandpiper Building, 44 Newnton Close, London, N4 2GX

UPRN:10008339646Flat/Maisonette1 bedsBuilt -

LeaseholdCouncil Tax: Band CEPC: B (82)

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

Flat 1, Sandpiper Building, 44 Newnton Close, London, N4 2GX

HP Score

/ 100

Strong

Verdict

today

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

Evidence

20 of 21 sources

Sale Estimate

£480,000

£456k - £504kHigh

Estimate

£480k

Range

£456k – £504k

Rent Estimate (pcm)

£1,900

£2k - £2k

Monthly

£1,900

Yield

4.15%

Verdict

Derived from HomePortfolio scores

Flat 1 earns an INVESTIGATE rating with HP Score 80/100. Investment score 73/100 reflects strong 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 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

80/ 100

Strong

Investment Score

73/ 100

High

Crime Score

20/ 100

Moderate

Walkability

85/ 100

Excellent

Transit & Bike

Transit 40Bike 72

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 4 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 edge-1.6/15
claims [AVM -14.6% (HIGH)] → measured edge -0.33pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp; asking more than 10% above the estimate (measured -0.33pp)
Market estimate used (HIGH confidence) · snapshot 9 Nov 2026
- valuation_snapshotsestimate for 10008339646· as of 9 Nov 2026
Rental economics0/40
gross yield 4.1%; range width penalty ×0.83
- valuation_snapshotsrent estimate 1900/mo (range 1750-2100)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,054/mo, -55% 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 4 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 60 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
364 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

£412,500£632,500

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£550,000

At the asking price

Monthly rent£1,900/mo

Evidenced range £1,750-£2,100

Interest rate5.4%

Loan to value75%

Cash required: £183,800
Net cash flow: -£541/mo
Cash on cash: -3.5%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.02 - 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 10008339646Valuation edge · as of 9 Nov 2026
valuation_snapshotsrent estimate 1900/mo (range 1750-2100)Rental economics · as of 9 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026 · verify before relying on this
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 1900/mo (range 1750-2100)
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. 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£480,000

Rent Estimate (pcm)£1,900

Gross Yield4.15%

1y Growth-

3y Growth-0.8%

5y Growth-0.3%

10y Growth+1.0%

Last Sold Price£425,000 (2019-02-15)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0N4 2GX

Approval Rate

-12mo

Development

low

HGY/2026/2987
Removal of existing telephone boxes followed by the installation of 1 no. new communications Kiosk with integrated defibrillator and advertising display
Pending
HGY/2026/3038
Display of advertising screens associated with installation of 1 no. new communications Kiosk with integrated defibrillator and advertising displays
Pending
HGY/2026/2963
Loft conversion with the erection of rear L-shaped dormer roof extension and insertion of 2no. front rooflights on main roof slope to first floor flat.
Pending

View Planning Timeline