18 Grosvenor Avenue, Carshalton, SM5 3EW

UPRN:5870075236-Beds -Built 1900-1929

Tenure: -Council Tax: Band FEPC: D (60)

Data freshness:Listing· freshPrice Paid· freshPlanning· 3mo agoEPC· 3mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

18 Grosvenor Avenue, Carshalton, SM5 3EW

HP Score

/ 100

Strong

Verdict

yesterday

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

Evidence

19 of 21 sources

Sale Estimate

£734,000

£587k - £880kLow

Estimate

£734k

Range

£587k – £880k

Rent Estimate (pcm)

£3,300

£3k - £4k

Monthly

£3,300

Yield

4.66%

Verdict

Derived from HomePortfolio scores

18 Grosvenor Avenue earns an INVESTIGATE rating with HP Score 85/100. Investment score 66/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is excellent (89/100). 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 company ownershipHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

85/ 100

Strong

Investment Score

66/ 100

Moderate

Crime Score

11/ 100

Low

Walkability

89/ 100

Excellent

Transit & Bike

Transit 35Bike 51

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

headline score requires valuation_edge (estimate confidence LOW below scoring floor)

What we could establish

Rental economics0/40
gross yield 4.7%; range width penalty ×0.87
- valuation_snapshotsrent estimate 3300/mo (range 3000-3550)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,290/mo, -39% 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 5 Nov 2026
Risk & liquidity9.3/15
269 sales/12mo in area; valuation range width 40%
- property_intelligencetransactions_12mo

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£850,000

At the asking price

Monthly rent£3,300/mo

Evidenced range £3,000-£3,550

Interest rate5.4%

Loan to value75%

Cash required: £288,800
Net cash flow: -£584/mo
Cash on cash: -2.4%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.15 - 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_snapshotsrent estimate 3300/mo (range 3000-3550)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 Nov 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth Valuation methodology

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Valuation edge could not be scored
estimate confidence LOW below scoring floor
Rental economics needs verification before you rely on it
rent estimate 3300/mo (range 3000-3550)

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. Ask the agent why the price was reduced and whether a previous sale fell through.
1 price cut(s) recorded on the listing history.
3. Fill the valuation edge gap before relying on the score.
estimate confidence LOW below scoring floor
4. 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£734,000

Rent Estimate (pcm)£3,300

Gross Yield4.66%

1y Growth-

3y Growth+1.5%

5y Growth+2.2%

10y Growth+2.7%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningModerate
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1SM5 3EW

Approval Rate

-12mo

Development

low

DM2026/01254
Conversion of loft space involving alterations to existing roofline and rooflights to front and rear roofslopes.
Pending
TREE2026/00129
T1 - London Plane - Crown reduction by 1.5m to provide 2m clearance from the building and crown lift to 5.5m clearance over carriageway and 3.5m clearance over payment.
Pending
DM2026/01178
Retention and completion of the conversion of loft space involving alterations to existing roofline and a dormer extension at rear.
Pending

View Planning Timeline

Ownership

Corporate Ownership66.9%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease Type-
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

17 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£38,359

Population Density4,258 /km²

Owner Occupied91%

Age Distribution

0-15 21%16-64 58%65+ 21%

View Area Profile

Schools Nearby

Wood Field Primary School
0.3 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
All Saints Carshalton Church of England Primary School
0.3 mi
Inspected as All Saints Carshalton Church of England Primary School (URN 103004) on 24 Sep 2014
Collingwood School
0.3 mi
Inspected by ISI
Stanley Park Junior School
0.4 mi
Good

2 of 9 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

22 Grosvenor Avenue
-
£996k
-
60 Grosvenor Avenue
-
£945k
-
4 Grosvenor Avenue
-
£800k
-
6 Grosvenor Avenue
-
£930k
-

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