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40 Harpenden Lane, Redbourn, St Albans, AL3 7PB

2 planning records

Estimated value

£990,000

  • Since the 2019 sale (£710,000)+39%
  • Against AL3 7PB's recent median (£500,000)+98%

Newest record on this page: January 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Bedrooms
4
Bathrooms
3
Floor area
138 m²
1485 sq ft
Energy rating
D
Score 60
Council tax
Band D
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£990,000

  • Against its 2019 sale (£710,000)+39%
  • Against AL3 7PB's recent median (£500,000)+98%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 40 Harpenden Lane is modelled from its 138 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in AL3 7PB. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    138 m² from the EPC lodged in June 2019

  • Sales of this home

    1 sale recorded, the latest in 2019

  • Recent sales in AL3 7PB

    5 sales, median £500,000 (2026–2022)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: January 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 of 2 applicationsFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

40 Harpenden Lane valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 26 August 2019Most recent

    £710,000

Median price across the last 5 sales in AL3 7PB: £500,000 (2026–2022).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 40 Harpenden Lane

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

40 Harpenden Lane is a four-bedroom detached house in Redbourn, St. Albans, St Albans (AL3 7PB). It has a recorded floor area of 138 m² (around 1485 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (June 2019) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). Records show the property has been extended at some point in its history.

At 138 m² the property is well over the postcode median (83 m² across 21 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £990,000 is 39.4% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£478/sq ft) was about 53.6% above the typical sold price in the postcode. 2 planning records sit against the property, 0 approved, 0 refused. Most recent transfer: August 2019 at £710,000.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms4
  • Bathrooms3
  • Open-plan layoutYes
  • EnsuiteYes

Outside

  • Private gardenYes
  • GarageDetached
  • Summer houseYes

Building

  • Previously extendedYes
  • RefurbishedYes
Before you decide

Everything you need to know about 40 Harpenden Lane

The true value, the hidden risks and the full sale history, in one report.

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

40 Harpenden Lane's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate
Jun 2019

EPC Rating

A
B
C
D
D60
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
6.6 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 19 June 2029

2 years remaining
Planning

Planning history

Applications and permits filed against 40 Harpenden Lane, Redbourn, St Albans, AL3 7PB, sourced from the PlanIt planning register.

Planning history includes both a loft conversion and an extension — the classic family-home expansion.

2 applications on record at 40 Harpenden Lane, Redbourn, St Albans, AL3 7PB

2decisions2extensions10documents
  1. Jun 2007
    Loft ConversionFull
    Outcome in report

    Loft conversion with roof alterations and front and side dormer window to provide first floor accomodation

    Documents
    2 docs on file
    Reference
    5/2007/0991
    Full record in report
  2. More recent applications — locked
  3. ExtensionDecision

Unlock 40 Harpenden Lane, Redbourn, St Albans, AL3 7PB's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (2 on record)
  • All 2 applications on this property in full
  • The 10 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Harpenden Lane homes

Four headline reads against 21 similar houses on this street, drawn from the latest EPC and Land Registry data.

On floor area, 40 Harpenden Lane stands well clear of the street.

Price per m²

£5,145

Street avg £5,444

On par

Floor Area

138 m²

Street avg 91 m²

Strongly above

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

6.6 t/year

Street avg 5.1 t/year

Strongly below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the St Albans district page.
Full St Albans report

Crime

170/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Ver Road — bus stop.

Closest school

0.7 km

Redbourn Primary School. 5 schools nearby.

Nearest schools

  • Redbourn Primary SchoolPrimary734m
  • Roundwood Park SchoolSecondary2.5km
  • Roundwood Primary SchoolPrimary2.5km
  • Wood End SchoolPrimary2.9km

Nearest stops

  • Ver RoadBus stop110m
  • Lamb LaneBus stop272m
  • Harpenden LaneBus stop292m
  • High StreetBus stop399m

Most reported crime locally

  • Violence & Sexual Offences776 reports30%
  • Anti-social Behaviour568 reports22%
  • Shoplifting208 reports8%
  • Other Theft193 reports8%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Early 20th centuryDetached BungalowEPC DExtended multiple times (2+ extensions)Solid (non-cavity) walls

Because the property has been extended more than once and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.

From £1,495 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£873k

1 Brooke End, Redbourn

AL3 7GA

4 bed
£830k

1 Flint Copse, Crown Street, Redbourn

AL3 7QE

4 bed2 bath
£811k

1 Coopers Meadow, Redbourn

AL3 7EY

4 bed3 bath
£796k

1 Draper Court, Peartree House, Crown Street, Redbourn

AL3 7HN

4 bed2 bath
£740k

1 Appletree Grove, Cumberland Drive, Redbourn

AL3 7PG

4 bed
£693k

1 Bassett Close, Redbourn

AL3 7JY

4 bed
£898k

1 Dell Cottage, Lybury Lane, Redbourn

AL3 7JJ

5 bed3 bath
£652k

1 Fish Street Farm, High Street, Redbourn

AL3 7NS

3 bed1 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 40 Harpenden Lane is modelled from its 138 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in AL3 7PB. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 40 Harpenden Lane. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 40 Harpenden Lane was lodged in June 2019 at band D and is valid until June 2029. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. 2 applications are matched to 40 Harpenden Lane. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 15 months, which places each incident at an approximate point. The 5 schools and 30 stops listed are measured in a straight line from AL3 7PB, not by walking route.
Council tax band
40 Harpenden Lane is in council tax band D. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 40 Harpenden Lane, Redbourn, St Albans, AL3 7PB. Each answer is also embedded as structured data for search engines.

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