Flat 12, Hartington House, 4 Duple Street, London, NW9 6GN
UPRN:10097256152-Beds -Built 2026
Tenure: -Council Tax: -EPC: B (90)
Data freshness:Listing· 1mo agoListing: ageing, refreshed 1mo ago (2026-10-06T04:00:03.003164+00:00)Price Paid· freshPrice Paid: fresh, refreshed 5d ago (2026-11-01T10:58:59.783370+00:00)Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T08:07:31.189682+00:00)EPC· 3mo agoEPC: ageing, refreshed 3mo ago (2026-08-21T10:52:56.641972+00:00)Risk· 5mo agoRisk: stale, refreshed 5mo ago (2026-06-18T00:00:00+00:00)Connectivity· 1mo agoConnectivity: ageing, refreshed 1mo ago (2026-10-03T06:43:10.905825+00:00)Schools· freshSchools: fresh, refreshed yesterday (2026-11-05T17:42:09.721250+00:00)Amenities· 1mo agoAmenities: ageing, refreshed 1mo ago (2026-09-23T00:00:00+00:00)Area· Census 2021Area: static reference data (Census 2021); authoritative and does not refresh
HP Score
64
/ 100
Mixed
Verdict
today
- Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate
Evidence
12 of 21 sourcesSale Estimate
£400,000
£320k - £481kLow
Estimate
£400k
Range
£320k – £481k
Rent Estimate (pcm)
--
-- - --
Verdict
Derived from HomePortfolio scores
Flat 12 earns an INVESTIGATE rating with HP Score 64/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is moderate. 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 listingsMarket 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)ONS Census 2021Police.ukPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS
64
HP Score
64/ 100
Mixed
60
Investment Score
60/ 100
Moderate
60
Crime Score
60/ 100
Elevated
-
Walkability
No data
Transit & Bike
No data
Valuation & Market
Sale Estimate£400,000
Rent Estimate (pcm)-
Gross Yield-
1y Growth-
3y Growth-4.0%
5y Growth-1.2%
10y Growth+0.7%
Last Sold Price-
Risk Overview
- Flood RiskUnknown
- SubsidenceSignificant
- RadonLow
- MiningUnknown
- LandslideLow
- Air QualityLow
- NoiseModerate
Planning Activity
Recent Apps
0NW9 6GN
Approval Rate
-12mo
Development
low
- Pending26/3934/RCUInstallation of 6no. external wall mounted air conditioning condenser units on front elevation (Part Retrospective Application)
- Pending26/3935/RCUInstallation of 4no. external wall mounted air conditioning condenser units on front and side elevations (Part Retrospective Application)
- Pending26/3906/RCUInstallation of external wall mounted air conditioning condenser unit on front elevation (Retrospective)
Ownership
- Corporate Ownership34.1%
- Overseas OwnershipNo
- Lease Term Remaining-
- CovenantsNone
- Lease Type-
- Last Ownership Change-
- SourceLand Registry
Connectivity
Broadband (-)
-
Mobile 4G/5G Coverage
-
EV Charger
-
PTAL Rating
-
Area Profile
Median EarningsLocal authority£39,239
Population Density-
Owner Occupied54%
Age Distribution
0-15 20%16-64 66%65+ 14%
Schools Nearby
- The Hyde School0.1 miArea grades2025
Inspected after Ofsted withdrew the single overall grade.
- Beis Medrash Elyon0.4 miReport card2026
Ofsted no longer awards a single overall grade.
- Beis Soroh Schneirer0.4 miGood
- Colindale Primary School0.4 miGood
3 of 7 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.