31 Katonia Avenue, Mayland, Chelmsford, CM3 6AD

UPRN:100090555201Semi-Detached House3 bedsBuilt 1967-1975

FreeholdCouncil Tax: Band DEPC: D (55)

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

31 Katonia Avenue, Mayland, Chelmsford, CM3 6AD

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

20 of 21 sources

Sale Estimate

£377,000

£358k - £395kHigh

Estimate

£377k

Range

£358k – £395k

Rent Estimate (pcm)

£1,600

£2k - £2k

Monthly

£1,600

Yield

4.80%

Verdict

Derived from HomePortfolio scores

31 Katonia Avenue earns an INVESTIGATE rating with HP Score 68/100. Investment score 59/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (40/100). 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 company ownershipHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

68/ 100

Mixed

Investment Score

59/ 100

Moderate

Crime Score

11/ 100

Low

Walkability

40/ 100

Mixed

Transit & Bike

Transit 5Bike 32

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 9 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 -6.1% (HIGH), sold-comps -0.3%, £/sqft -0.2%] → 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 (HIGH confidence) · snapshot 12 Oct 2026
- valuation_snapshotsestimate for 100090555201· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 15.3%· as of 1 Nov 2026
Rental economics0/40
gross yield 4.8%; range width penalty ×0.89
- valuation_snapshotsrent estimate 1600/mo (range 1500-1750)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -642/mo, -40% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing
- underwriting_assumptionscosts not disclosed by the advert· as of 9 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 32 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 9 Nov 2026
Risk & liquidity14.7/15
578 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

£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£400,000

At the asking price

Monthly rent£1,600/mo

Evidenced range £1,500-£1,750

Interest rate5.4%

Loan to value75%

Cash required: £131,300
Net cash flow: -£242/mo
Cash on cash: -2.2%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.19 - 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 100090555201Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 15.3%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 1600/mo (range 1500-1750)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 9 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 9 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 1600/mo (range 1500-1750)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 32 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£377,000

Rent Estimate (pcm)£1,600

Gross Yield4.80%

1y Growth-

3y Growth-1.1%

5y Growth+0.7%

10y Growth+2.8%

Last Sold Price£285,000 (2020-11-25)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0CM3 6AD

Approval Rate

-12mo

Development

low

26/00728/LDE
Certificate of lawfulness for existing development relating to the existing outbuilding within the rear garden of the property, including its construction and use for purposes incidental to the enjoyment of the main dwellinghouse.
Pending
26/00661/VAR
Variation of condition 2 on approved planning permission 26/00286/HOUSE (Single-storey rear extension, alterations to existing garage with rear extension, front porch canopy, changes to materials and fenestration) - to change vertical cladding to horizontal cladding, allowing ventilation to work with new door and window reveals.
Pending
26/00602/HOUSE
Single storey rear extension and garage conversion
Approved

View Planning Timeline

Ownership

Corporate Ownership70.6%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2020-11-25
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

5 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£32,599

Population Density-

Owner Occupied89%

Age Distribution

0-15 13%16-64 60%65+ 27%

View Area Profile

Schools Nearby

Maylandsea Primary School
0.2 mi
Good
Christchurch Church of England Primary School
1.6 mi
Report card2026
Ofsted no longer awards a single overall grade.
St Leonard's Church of England Primary School
3.6 mi
Good
Cold Norton Primary School
3.9 mi
Good

4 of 13 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

23A Katonia Avenue
-
£400k
-
29 Katonia Avenue
-
£385k
-
31 Katonia Avenue
-
£285k
-
2 Katonia Avenue
-
£320k
-

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