1 Rothamsted Court, Rothamsted Avenue, Harpenden, AL5 2BZ

UPRN:200003636484Flat/Maisonette2 bedsBuilt 1967-1975

Tenure: -Council Tax: Band DEPC: C (69)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 2mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021

1 Rothamsted Court, Rothamsted Avenue, Harpenden, AL5 2BZ

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£391,000

£352k - £430kMedium

Estimate

£391k

Range

£352k – £430k

Rent Estimate (pcm)

£1,700

£2k - £2k

Monthly

£1,700

Yield

5.10%

Verdict

Derived from HomePortfolio scores

1 Rothamsted Court earns an INVESTIGATE rating with HP Score 68/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (87/100). 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 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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

68/ 100

Mixed

Investment Score

60/ 100

Moderate

Crime Score

68/ 100

Elevated

Walkability

87/ 100

Excellent

Transit & Bike

Transit 25Bike 61

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 5 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 -2.3% (MEDIUM), sold-comps -3.3%, £/sqft -3.4%] → 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 200003636484· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 7.3%· as of 26 Oct 2026
Rental economics0.7/40
gross yield 5.1%; range width penalty ×0.91
- valuation_snapshotsrent estimate 1700/mo (range 1600-1850)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -748/mo, -44% 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 5 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 70 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 5 Nov 2026
Risk & liquidity12.8/15
303 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

£300,000£460,000

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£399,950

At the asking price

Monthly rent£1,700/mo

Evidenced range £1,600-£1,850

Interest rate5.4%

Loan to value75%

Cash required: £131,283
Net cash flow: -£173/mo
Cash on cash: -1.6%
Score at this price: 14

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.26 - clears 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 200003636484Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 7.3%Valuation edge · as of 26 Oct 2026
valuation_snapshotsrent estimate 1700/mo (range 1600-1850)Rental economics · as of 9 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 5 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 Nov 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 1700/mo (range 1600-1850)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 70 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. 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£391,000

Rent Estimate (pcm)£1,700

Gross Yield5.10%

1y Growth-

3y Growth-1.1%

5y Growth+2.0%

10y Growth+2.8%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningLow
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0AL5 2BZ

Approval Rate

-12mo

Development

low

TP/2026/0509
G1 - 5 lime trees at the front of the house to raise the canopy to approx 5 mentres and remove epicormic growth. This work is all general maintenasnce and to keep mtrees healthy and under control
Pending
TP/2026/0505
T1 - Ash - Cut back lateral growth overhanging shed T2 - Beech - Cut back lateral growth towards house. These tree works are required to maintain the size and health of the trees and to provide more light into the garden, also to stop potential future d
Pending
TP/2026/0477
11A Salisbury Avenue Harpenden Hertfordshire Al5 2Qf T1 - 1 x Overgrown Cotoneaster / Himalayan tree.Pollard to height of first branch break.
Pending

View Planning Timeline

Ownership

Corporate Ownership54.9%
Overseas OwnershipNo
Lease Term Remaining999+ yrs
CovenantsRestrictive
Lease Type-
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

10 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£45,543

Population Density1,537 /km²

Owner Occupied55%

Age Distribution

0-15 15%16-64 58%65+ 27%

View Area Profile

Schools Nearby

St Nicholas CofE VA Primary School
0.1 mi
Good
Harpenden Academy
0.3 mi
-
St Hilda's School
0.3 mi
Inspected by ISI
St George's School
0.5 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.

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

View All Schools

Comparables

View All

4 Rothamsted Court
-
£370k
-
5 Rothamsted Court
-
£380k
-
9 Rothamsted Court
-
£418k
-
10 Rothamsted Court
-
£393k
-

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