21 Parkinson Drive, Chelmsford, CM1 3GU

UPRN:200004640299Flat/Maisonette2 bedsBuilt 1996-2002

LeaseholdCouncil Tax: Band CEPC: C (79)

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

HP Score

/ 100

Strong

Verdict

yesterday

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

Evidence

20 of 21 sources

Sale Estimate

£213,000

£203k - £224kHigh

Estimate

£213k

Range

£203k – £224k

Rent Estimate (pcm)

£1,300

£1k - £1k

Monthly

£1,300

Yield

7.80%

Verdict

Derived from HomePortfolio scores

21 Parkinson Drive earns an INVESTIGATE rating with HP Score 76/100. Investment score 64/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (67/100). 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

76/ 100

Strong

Investment Score

64/ 100

Moderate

Crime Score

16/ 100

Moderate

Walkability

67/ 100

Moderate

Transit & Bike

Transit 19Bike 67

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesListing checked 7 Nov 2026

Fewer independent sources agree, or a component could not be scored.

Valuation edge2.5/15
claims [AVM +6.1% (HIGH), sold-comps +27.5%, £/sqft +27.6%] → measured edge +0.50pp 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 (HIGH confidence) · snapshot 9 Nov 2026
- valuation_snapshotsestimate for 200004640299· as of 9 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 18.8%· as of 8 Nov 2026
Rental economics21.7/40
gross yield 7.8%; range width penalty ×0.97
- valuation_snapshotsrent estimate 1300/mo (range 1200-1350)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -153/mo, -12% 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 7 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 248 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 7 Nov 2026
Risk & liquidity14.7/15
673 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

£150,000£230,000

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£200,000

At the asking price

Monthly rent£1,300/mo

Evidenced range £1,200-£1,350

Interest rate5.4%

Loan to value75%

Cash required: £62,800
Net cash flow: £225/mo
Cash on cash: 4.3%
Score at this price: 39

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.93 - 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 200004640299Valuation edge · as of 9 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 18.8%Valuation edge · as of 8 Nov 2026
valuation_snapshotsrent estimate 1300/mo (range 1200-1350)Rental economics · as of 9 Nov 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 7 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 7 Nov 2026

Risks

What could kill this deal

Score confidence is reduced
fewer independent sources agree, or a component could not be scored
Rental economics needs verification before you rely on it
rent estimate 1300/mo (range 1200-1350)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 248 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. 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£213,000

Rent Estimate (pcm)£1,300

Gross Yield7.80%

1y Growth-15.5%

3y Growth+0.4%

5y Growth+1.1%

10y Growth+2.7%

Last Sold Price£170,500 (2014-10-24)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0CM1 3GU

Approval Rate

-12mo

Development

low

26/01362/CLOPUD
Proposed loft conversion to habitable space including hip to gable roof enlargement and construction of a rear dormer, installation of two front facing rooflights and glazed guarding to the rear dormer opening. Alterations to the existing fenestration and external doors.
Pending
26/05702/CAT
3x Lime (marked T1, T2 and T3 on plan) - cut back by 2.5m. Reason - to stop debris falling onto cars parked below.
Pending
26/01429/FUL
Proposed substation with an external metal staircase to the first floor and a new doorway to be formed.
Pending

View Planning Timeline