25 Harmer Green Lane, Welwyn, AL6 0AS
UPRN:100080988935Detached House5 bedsBuilt 1950-1966
FreeholdCouncil Tax: Band GEPC: C (73)
Data freshness:Listing· 4mo agoListing: stale, refreshed 4mo ago (2026-07-21T04:00:04.107765+00:00)Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T09:30:04.532492+00:00)EPC· 6mo agoEPC: stale, refreshed 6mo ago (2026-05-20T10:58:39.129138+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· 1mo agoSchools: ageing, refreshed 1mo ago (2026-10-06T05:00:30.533230+00:00)Amenities· 2mo agoAmenities: ageing, refreshed 2mo ago (2026-09-23T00:00:00+00:00)Area· Census 2021Area: static reference data (Census 2021); authoritative and does not refreshCouncil Tax· 6mo agoCouncil Tax: stale, refreshed 6mo ago (2026-05-16T05:20:33.097868+00:00)
HP Score
68
/ 100
Mixed
Verdict
7 days ago
- Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate
Evidence
18 of 21 sourcesSale Estimate
£1,892,000
£1.80M - £1.99MHigh
Estimate
£1.89M
Range
£1.80M – £1.99M
Rent Estimate (pcm)
£5,950
£5k - £7k
Monthly
£5,950
Yield
3.77%
Verdict
Derived from HomePortfolio scores
25 Harmer Green Lane earns an INVESTIGATE rating with HP Score 68/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (13/100). 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)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 Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS
68
HP Score
68/ 100
Mixed
63
Investment Score
63/ 100
Moderate
11
Crime Score
11/ 100
Low
13
Walkability
13/ 100
Low
Transit & Bike
Transit 9Bike 22
Walk Score, out of 100
Valuation & Market
Sale Estimate£1,892,000
Rent Estimate (pcm)£5,950
Gross Yield3.77%
1y Growth-
3y Growth-1.8%
5y Growth+0.4%
10y Growth+1.4%
Last Sold Price£850,000 (2013-10-04)
Risk Overview
- Flood RiskUnknown
- SubsidenceModerate
- RadonLow
- MiningLow
- LandslideLow
- Air QualityLow
- NoiseLow
Planning Activity
Recent Apps
0AL6 0AS
Approval Rate
-12mo
Development
low
- Pending6/2026/1933/TPORemove dead plum tree and replace with apple or pear TPO669 (2017) G3
- Approved6/2026/1941/TPOFelling of a European Larch [775 (2018) T5 - individual tree] with Ganoderma
- Pending6/2026/1821/HOUSEErection of a part single storey and part two storey rear extension, garage conversion with replacement roof, installation of new front door and side access gate and alteration to fenestration.
Ownership
- Corporate Ownership71.3%
- Overseas OwnershipNo
- Lease Term Remaining-
- CovenantsRestrictive
- Lease TypeFreehold
- Last Ownership Change2013-10-04
- SourceLand Registry
Connectivity
Broadband (Standard)
14 Mbps
Mobile 4G/5G Coverage
EEThreeO2Vodafone
EV Charger
-
PTAL Rating
-
Area Profile
Median EarningsLocal authority£37,805
Population Density474 /km²
Owner Occupied89%
Age Distribution
0-15 15%16-64 61%65+ 24%
Schools Nearby
- St John's CofE Primary School0.6 miGood
- Inspected by ISISherrardswood School0.7 mi
- Knightsfield School0.8 mi
Inspected as Knightsfield School (URN 117666) on 19 Jan 2010
- Harwood Hill Junior Mixed Infant and Nursery School0.8 miGood
4 of 12 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.
Comparables
- 33 Harmer Green Lane-£1.31M-
- 21 Harmer Green Lane-£775k-
- 25 Harmer Green Lane-£850k-
- 23 Harmer Green Lane-£840k-