21 Amberden Avenue, London, N3 3DE

UPRN:200003575Flat/Maisonette2 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band CEPC: D (56)

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

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

19 of 21 sources

Sale Estimate

£337,000

£303k - £370kMedium

Estimate

£337k

Range

£303k – £370k

Rent Estimate (pcm)

£1,350

£1k - £1k

Monthly

£1,350

Yield

4.98%

Verdict

Derived from HomePortfolio scores

21 Amberden Avenue earns an INVESTIGATE rating with HP Score 70/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is moderate. Walkability is limited (69/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is freehold. 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

70/ 100

Mixed

Investment Score

73/ 100

High

Crime Score

47/ 100

Elevated

Walkability

69/ 100

Moderate

Transit & Bike

Transit 48Bike 63

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 31 Oct 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 edge0/15
claims [AVM +3.6% (MEDIUM)] → 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 200003575· as of 9 Oct 2026
Rental economics0/40
gross yield 5.0%; range width penalty ×0.83
- valuation_snapshotsrent estimate 1350/mo (range 1200-1450)· as of 9 Oct 2026· verify before relying on this
- listing_factslisting text signals condition works - budget before trusting any yield· as of 31 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -509/mo, -38% 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 31 Oct 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 305 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 31 Oct 2026
Risk & liquidity12.9/15
188 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

£244,000£374,000

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£325,000

At the asking price

Monthly rent£1,350/mo

Evidenced range £1,200-£1,450

Interest rate5.4%

Loan to value75%

Cash required: £105,050
Net cash flow: -£162/mo
Cash on cash: -1.9%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.23 - 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 200003575Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 1350/mo (range 1200-1450)Rental economics · as of 9 Oct 2026 · verify before relying on this
listing_factslisting text signals condition works - budget before trusting any yieldRental economics · as of 31 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 31 Oct 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 31 Oct 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 1350/mo (range 1200-1450)
Rental economics needs verification before you rely on it
listing text signals condition works - budget before trusting any yield

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£337,000

Rent Estimate (pcm)£1,350

Gross Yield4.98%

1y Growth-

3y Growth-1.9%

5y Growth-0.5%

10y Growth+0.6%

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

0N3 3DE

Approval Rate

-12mo

Development

low

26/3959/192
Single storey rear extension with 2no. rooflights following the demolition of existing conservatory
Pending
TCP/0692/26
1 x Willow (applicants ref. T1) - Pollard to approximately 3m from ground level.
Pending
26/3952/S73
Variation of condition 3 (Use of Outbuilding) of planning permission reference 26/2994/HSE dated 09/10/2026 for 'New garage with 1no. rooflight adjacent to existing garage. Replacement, widening and repositioning of existing hard standing of front driveway.' Variation to include changing the wording of condition 3 from ' The use of the outbuilding hereby permitted shall at all times be ancillary to and occupied in conjunction with the main building and shall not at any time be occupied as a separate unit or dwelling.' to 'The use of the outbuilding hereby permitted shall at all times be ancillary to and occupied in conjunction with the dwellinghouse known as 1 Neale Close and shall not at any time be occupied as a separate unit or dwelling.'
Pending

View Planning Timeline

Ownership

Corporate Ownership48.3%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

14 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£39,239

Population Density-

Owner Occupied51%

Age Distribution

0-15 20%16-64 66%65+ 14%

View Area Profile

Schools Nearby

Akiva School
0.2 mi
Good
St Theresa's Catholic Primary School
0.2 mi
Good
Christ's College Finchley
0.3 mi
Inspected as Christ's College Finchley (URN 101350) on 16 Sep 2010
Brookland Junior School
0.3 mi
Good

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

View All Schools

Comparables

View All

29 Amberden Avenue
-
£322k
-
33 Amberden Avenue
-
£383k
-
19 Amberden Avenue
-
£320k
-
22 Amberden Avenue
-
£850k
-

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