The Old Sorting Office, 1B Crown Street, Redbourn, St. Albans, AL3 7JX

UPRN:10024117342Detached HouseBeds -Built 2012-2021

Tenure: -Council Tax: -EPC: C (78)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 1mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

The Old Sorting Office, 1B Crown Street, Redbourn, St. Albans, AL3 7JX

HP Score

/ 100

Strong

Verdict

2 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£842,000

£758k - £926kMedium

Estimate

£842k

Range

£758k – £926k

Rent Estimate (pcm)

£3,500

£3k - £4k

Monthly

£3,500

Yield

6.22%

Verdict

Derived from HomePortfolio scores

The Old Sorting Office earns an INVESTIGATE rating with HP Score 80/100. Investment score 72/100 reflects strong fundamentals. Crime intensity is low. Walkability is limited (63/100). 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)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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

80/ 100

Strong

Investment Score

72/ 100

High

Crime Score

16/ 100

Moderate

Walkability

63/ 100

Moderate

Transit & Bike

Transit 15Bike 53

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 2 Nov 2026

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

Check before relying on this score: the estimate sits 20% above the ask. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +19.8% (MEDIUM), sold-comps +12.1%, £/sqft +12.1%] → measured edge +0.50pp 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 (MEDIUM confidence) · snapshot 12 Oct 2026
- valuation_snapshotsestimate for 10024117342· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 10 comps, dispersion 18.9%· as of 30 Oct 2026
Rental economics7.8/40
gross yield 6.2%; range width penalty ×0.80; the estimate this rent rides on sits 20% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 3500/mo (range 3150-3850)· as of 12 Oct 2026· verify before relying on this
- valuation_snapshotssale estimate 20% above the ask on the same snapshot - verify the rent describes this home· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -405/mo, -12% 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 2 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 65 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 2 Nov 2026
Risk & liquidity12.8/15
248 sales/12mo in area; valuation range width 20%
- 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

£506,000£776,000

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£675,000

At the asking price

Monthly rent£3,500/mo

Evidenced range £3,150-£3,850

Interest rate5.4%

Loan to value75%

Cash required: £227,550
Net cash flow: £145/mo
Cash on cash: 0.8%
Score at this price: 23

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.54 - 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_snapshotsestimate for 10024117342Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 10 comps, dispersion 18.9%Valuation edge · as of 30 Oct 2026
valuation_snapshotsrent estimate 3500/mo (range 3150-3850)Rental economics · as of 12 Oct 2026 · verify before relying on this
valuation_snapshotssale estimate 20% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advert

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 3500/mo (range 3150-3850)
Rental economics needs verification before you rely on it
sale estimate 20% above the ask on the same snapshot - verify the rent describes this home

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. 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. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£842,000

Rent Estimate (pcm)£3,500

Gross Yield6.22%

1y Growth-

3y Growth+1.0%

5y Growth+1.6%

10y Growth+2.6%

Last Sold Price£415,000 (2014-05-27)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningModerate
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0AL3 7JX

Approval Rate

-12mo

Development

low

TP/2026/0507
TPO1910 (G1) Silver Birch x2 Reduce the overall crown height by approximately 5 metres, Reduce lateral growth by approximately 0.5 metres where necessary to maintain a balanced and natural crown form. Reason for works: To reduce the overall size of
Pending
TP/2026/0496
Ash tree ( fraxinus excelsior ) at rear of property. Re - pollard branches to original pollard cuts. Yew ( taxus baccata ) Crown lift to 3 metres, Yew ( taxus baccata ) six small yew trees in various locations in rear garden Remove. Laurel tree/ Bush ( pr
Pending
TP/2026/0476
Cherry front garden. Reduce and thin back to previous levels. Approx 1m to1.5m Blue Spruce. Trim sides and top by approx 1-2 feet
Pending

View Planning Timeline

Ownership

Corporate Ownership63%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease Type-
Last Ownership Change2014-05-27
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

22 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£45,543

Population Density3,306 /km²

Owner Occupied82%

Age Distribution

0-15 16%16-64 52%65+ 32%

View Area Profile

Schools Nearby

Redbourn Primary School
0.3 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
St Luke's School
0.4 mi
Good
Roundwood Park School
1.7 mi
Outstanding
Roundwood Primary School
1.7 mi
Report card2026
Ofsted no longer awards a single overall grade.

5 of 11 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

27 Crown Street
-
£630k
-
33A Crown Street
-
£635k
-
19 Crown Street
-
£445k
-
2A Crown Street
-
£330k
-

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