49 Allum Lane, Elstree, Borehamwood, WD6 3NE

UPRN:100080758545Detached House5 bedsBuilt -

FreeholdCouncil Tax: Band GEPC: -

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

49 Allum Lane, Elstree, Borehamwood, WD6 3NE

HP Score

/ 100

Mixed

Verdict

2 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£2,120,000

£1.70M - £2.54MLow

Estimate

£2.12M

Range

£1.70M – £2.54M

Rent Estimate (pcm)

£7,550

£7k - £8k

Monthly

£7,550

Yield

5.18%

Verdict

Derived from HomePortfolio scores

49 Allum Lane earns an INVESTIGATE rating with HP Score 74/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (64/100). 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 SourcesPortal 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 Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

74/ 100

Mixed

Investment Score

60/ 100

Moderate

Crime Score

18/ 100

Moderate

Walkability

64/ 100

Moderate

Transit & Bike

Transit 15Bike 52

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 economics1.1/40
gross yield 5.2%; range width penalty ×0.78; the estimate this rent rides on sits 17% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 7550/mo (range 6750-8350)· as of 10 Nov 2026· verify before relying on this
- valuation_snapshotssale estimate 17% above the ask on the same snapshot - verify the rent describes this home· as of 10 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,964/mo, -26% 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 13 Nov 2026
Risk & liquidity9.2/15
267 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£1,750,000

At the asking price

Monthly rent£7,550/mo

Evidenced range £6,750-£8,350

Interest rate5.4%

Loan to value75%

Cash required: £650,050
Net cash flow: -£679/mo
Cash on cash: -1.3%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.28 - clears 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 7550/mo (range 6750-8350)Rental economics · as of 10 Nov 2026 · verify before relying on this
valuation_snapshotssale estimate 17% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 10 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 13 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 7550/mo (range 6750-8350)

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The market estimate this rent rides on sits far above the asking price, so the rent may describe a different home.
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£2,120,000

Rent Estimate (pcm)£7,550

Gross Yield5.18%

1y Growth-

3y Growth-3.8%

5y Growth-0.7%

10y Growth+1.2%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0WD6 3NE

Approval Rate

-12mo

Development

low

26/1585/VOC
Variation of condition 9 Part A (Design Approval) and Part B (Implementation/Construction) to allow for changing the 'trigger' point for Part A from 'no on-site works above slab level ' to 'prior to the first occupation of any dwelling following grant of planning permission 23/1142/FUL.
Pending
26/1482/TPO
T4 - (T1 on sketch) Ash tree in rear garden. Cut back long low level branches that overhang the lawn area of our property. Retain the existing height of the tree at approximately 15m and reduce the spread to approximately 6m.
Pending
26/1463/HSE
Construction of front porch extension and conversion of loft to habitable space, with rear dormer and Juliette balcony.
Pending

View Planning Timeline