21 Carfax Avenue, Tongham, Farnham, GU10 1BD

UPRN:100061378779Semi-Detached House3 bedsBuilt 1950-1966

FreeholdCouncil Tax: Band DEPC: D (64)

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

21 Carfax Avenue, Tongham, Farnham, GU10 1BD

HP Score

/ 100

Mixed

Verdict

3 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£415,000

£395k - £436kHigh

Estimate

£415k

Range

£395k – £436k

Rent Estimate (pcm)

£1,600

£1k - £2k

Monthly

£1,600

Yield

4.80%

Verdict

Derived from HomePortfolio scores

21 Carfax Avenue earns an INVESTIGATE rating with HP Score 72/100. Investment score 55/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (53/100). 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 NationsMarket 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

HP Score

72/ 100

Mixed

Investment Score

55/ 100

Moderate

Crime Score

14/ 100

Low

Walkability

53/ 100

Moderate

Transit & Bike

Transit 17Bike 53

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 30 Oct 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Valuation edge0/15
claims [AVM +3.6% (HIGH)] → 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 9 Oct 2026
- valuation_snapshotsestimate for 100061378779· as of 9 Oct 2026
Rental economics0/40
gross yield 4.8%; range width penalty ×0.89
- valuation_snapshotsrent estimate 1600/mo (range 1450-1700)· as of 9 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 30 Oct 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 75 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 30 Oct 2026
Risk & liquidity14.7/15
222 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 £1,450-£1,700

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 100061378779Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 1600/mo (range 1450-1700)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 30 Oct 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 30 Oct 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

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 1450-1700)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 75 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£415,000

Rent Estimate (pcm)£1,600

Gross Yield4.80%

1y Growth-

3y Growth-1.6%

5y Growth-1.0%

10y Growth+1.3%

Last Sold Price£143,000 (2001-10-19)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonLow
MiningModerate
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1GU10 1BD

Approval Rate

-12mo

Development

low

26/P/01388
Erection of dwellinghouse with associated parking, bin and cycle storage on land to rear
Pending
26/S/00007
Request for an EIA Screening Opinion under Regulation 6 of the Town & Country Planning (Environmental Impact Assessment) Regulations 2017 (as amended).
Pending
26/CON/00047
Details of cycle parking submitted pursuant to Condition 19 of planning permission GU24/CON/00010 dated 30 October 2024 (this application is determined by Surrey County Council under their ref SCCRef-2026-0168)
Pending

View Planning Timeline

Ownership

Corporate Ownership74.7%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2001-10-19
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

7 Mbps

Mobile 4G/5G Coverage

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£39,985

Population Density3,628 /km²

Owner Occupied70%

Age Distribution

0-15 20%16-64 65%65+ 15%

View Area Profile

Schools Nearby

Ash Manor School
0.2 mi
Good
St Paul's CofE Primary School & Nursery
0.4 mi
Good
Walsh CofE Infant School
0.5 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Walsh CofE Junior School
0.5 mi
Inspected as Walsh CofE Junior School (URN 125156) on 14 Jun 2022

4 of 12 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

49 Carfax Avenue
-
£350k
-
45 Carfax Avenue
-
£343k
-
27 Carfax Avenue
-
£340k
-
23 Carfax Avenue
-
£440k
-

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