29 Ferndene, 123 Slough Lane, London, NW9 8YE

UPRN:202096446Flat/Maisonette1 bedsBuilt 1950-1966

LeaseholdCouncil Tax: Band BEPC: E (40)

Data freshness:Listing· freshPrice Paid· freshPlanning· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 1mo agoArea· Census 2021Council Tax· 6mo ago

29 Ferndene, 123 Slough Lane, London, NW9 8YE

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

19 of 21 sources

Sale Estimate

£228,000

£182k - £273kLow

Estimate

£228k

Range

£182k – £273k

Rent Estimate (pcm)

£1,150

£1k - £1k

Monthly

£1,150

Yield

3.94%

Verdict

Derived from HomePortfolio scores

29 Ferndene earns an INVESTIGATE rating with HP Score 73/100. Investment score 62/100 reflects moderate fundamentals. Crime intensity is low. Walkability is good (79/100). 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

73/ 100

Mixed

Investment Score

62/ 100

Moderate

Crime Score

34/ 100

Moderate

Walkability

79/ 100

High

Transit & Bike

Transit 35Bike 45

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 3.9%; range width penalty ×0.94
- valuation_snapshotsrent estimate 1150/mo (range 1100-1250)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -761/mo, -66% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing; leasehold with no service charge disclosed - the stress assumes GBP 0
- underwriting_assumptionscosts not disclosed by the advert· as of 3 Nov 2026· verify before relying on this
Risk & liquidity9.3/15
373 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£349,950

At the asking price

Monthly rent£1,150/mo

Evidenced range £1,100-£1,250

Interest rate5.4%

Loan to value75%

Cash required: £113,783
Net cash flow: -£385/mo
Cash on cash: -4.1%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.97 - 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 1150/mo (range 1100-1250)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 3 Nov 2026 · verify before relying on this
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 1150/mo (range 1100-1250)

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. Fill the valuation edge gap before relying on the score.
estimate confidence LOW below scoring floor
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£228,000

Rent Estimate (pcm)£1,150

Gross Yield3.94%

1y Growth-

3y Growth-4.0%

5y Growth-1.2%

10y Growth+0.7%

Last Sold Price£220,000 (2021-05-27)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1NW9 8YE

Approval Rate

-12mo

Development

low

26/2780
Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3m Eaves height - 2.92m
Pending
26/2750
Demolition of rear kitchen and erection of single storey rear extension, first floor part side and rear extension, rear dormer extension, hip to gable roof extension, 3x front rooflights and removal of 1x front rooflight to dwellinghouse.
Pending
26/2751
Certificate of lawfulness for proposed rear dormer extension, hip-to-gable roof extension, and 3x front rooflights to dwellinghouse.
Pending

View Planning Timeline