Flat 5A, Frognal Mansions, 97 Frognal, London, NW3 6XT

UPRN:5088989Flat/MaisonetteBeds -Built before 1900

LeaseholdCouncil Tax: Band EEPC: C (73)

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

Flat 5A, Frognal Mansions, 97 Frognal, London, NW3 6XT

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

£633,000

£507k - £760kLow

Estimate

£633k

Range

£507k – £760k

Rent Estimate (pcm)

£2,550

£2k - £3k

Monthly

£2,550

Yield

3.08%

Verdict

Derived from HomePortfolio scores

Flat 5A earns an INVESTIGATE rating with HP Score 87/100. Investment score 70/100 reflects strong fundamentals. Crime intensity is very low. Walkability is excellent (93/100). 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

87/ 100

Strong

Investment Score

70/ 100

High

Crime Score

12/ 100

Low

Walkability

93/ 100

Excellent

Transit & Bike

Transit 35Bike 60

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 3.1%; range width penalty ×0.81
- valuation_snapshotsrent estimate 2550/mo (range 2300-2800)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,453/mo, -96% 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 5 Nov 2026· verify before relying on this
Risk & liquidity9.2/15
380 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£995,000

At the asking price

Monthly rent£2,550/mo

Evidenced range £2,300-£2,800

Interest rate5.4%

Loan to value75%

Cash required: £343,050
Net cash flow: -£1,593/mo
Cash on cash: -5.6%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.76 - 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 2550/mo (range 2300-2800)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 Nov 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
Valuation edge could not be scored
estimate confidence LOW below scoring floor
Rental economics needs verification before you rely on it
rent estimate 2550/mo (range 2300-2800)

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£633,000

Rent Estimate (pcm)£2,550

Gross Yield3.08%

1y Growth+52.6%

3y Growth-2.2%

5y Growth-0.4%

10y Growth+0.3%

Last Sold Price£562,000 (2026-03-03)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0NW3 6XT

Approval Rate

-12mo

Development

low

2026/4900/T
FRONT GARDEN: 1 x Birch (T1) - Reduce overall crown by 1.5m - 2.5m. 1 x Bay (T2) - Trim overall crown up to 1m to shape. 1 x Holly (T4) - Reduce height by 2m. REAR GARDEN: 1 x Cedar (T3) - Prune lateral growth over access road by up to 2m.
Pending
2026/4873/T
REAR GARDEN: 1 x Ginkgo (T1) - Crown reduce height by 2m. Crown reduce spread by 1.5m. Crown thin by 10%.
Pending
2026/4858/T
REAR GARDEN: 1 x Horse Chestnut (T1) - Fell to ground level.
Pending

View Planning Timeline