What type of property is 42 Harmer Green Lane, AL6 0AT?

42 Harmer Green Lane, AL6 0AT is a 4-bedroom detached house.

What did 42 Harmer Green Lane, AL6 0AT sell for?

42 Harmer Green Lane, AL6 0AT last sold for £1,150,000 in November 2015, around 11 years ago. Before that, it sold for £270,000 in July 1999, so prices have been rising over 16 years on record. Source: HM Land Registry.

Has 42 Harmer Green Lane, AL6 0AT appreciated in value?

Across 2 sales between July 1999 and November 2015, 42 Harmer Green Lane, AL6 0AT rose from £270,000 to £1,150,000, a change of £880,000. That works out to roughly +9.3% per year compounded over 16 years. Source: HM Land Registry.

What energy rating does 42 Harmer Green Lane, AL6 0AT have?

The current EPC rating for 42 Harmer Green Lane, AL6 0AT is E with a score of 54 out of 100, lodged in July 2014. The assessor estimates the property could reach a C. Source: EPC Register.

What is the floor area of 42 Harmer Green Lane, AL6 0AT?

42 Harmer Green Lane, AL6 0AT has a recorded floor area of 244 m² (2,626 sq ft), around 61 m² per bedroom. Source: EPC Register.

How is 42 Harmer Green Lane, AL6 0AT heated?

The latest EPC at 42 Harmer Green Lane, AL6 0AT records mains gas as the main heating fuel. Source: EPC Register.

Has 42 Harmer Green Lane, AL6 0AT had any planning applications?

42 Harmer Green Lane, AL6 0AT has 3 approved extension applications on file including single-storey rear extension and side extension. Source: PlanIt planning register.

What council tax band is 42 Harmer Green Lane, AL6 0AT?

42 Harmer Green Lane, AL6 0AT is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is 42 Harmer Green Lane, AL6 0AT located?

42 Harmer Green Lane, AL6 0AT sits in Welwyn. It falls within the AL6 postcode district in Hertfordshire.

What is crime like near 42 Harmer Green Lane, AL6 0AT?

Police records around 42 Harmer Green Lane, AL6 0AT show an average of 2 reported crimes per month over the last 8 months. Violent crime makes up roughly 67% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

Which schools serve 42 Harmer Green Lane, AL6 0AT?

The closest primary school to 42 Harmer Green Lane, AL6 0AT is St John's CofE Primary School (768m), one of 12 primaries within walking distance. The closest secondary is Monk's Walk School (1.6km), with 2 secondaries in the surrounding area.

What transport links are near 42 Harmer Green Lane, AL6 0AT?

The closest bus stop to 42 Harmer Green Lane, AL6 0AT is Welwyn North Railway Station, 214m away. The nearest rail option is Welwyn North Rail Station, 224m away.

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42 Harmer Green Lane, Welwyn, AL6 0AT

3 planning records

Property type

Detached

Bedrooms

Bathrooms

Floor area

244 m²

2626 sq ft

Energy rating

Score 54

Council tax

Band F

Tenure

Owner Occupied

Overview

About 42 Harmer Green Lane

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

42 Harmer Green Lane is a four-bedroom detached house in Welwyn (AL6 0AT). It has a recorded floor area of 244 m² (around 2626 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (July 2014) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 75), a 2-band jump. The latest certificate is from July 2014, so improvements made since then won't be reflected.

3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Across 1999–2015, sale prices on this property compounded at 9.3% per year. On a £-per-square-foot basis, the last sale (£438/sq ft) was about 32.7% above the typical sold price in the postcode. On the market in November 2015 and unlisted since — roughly 11 years.

Before you offer

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Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

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Larger development activity nearby

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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

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
Bathrooms4

Energy

Energy performance

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

42 Harmer Green Lane's carbon output runs well above what efficient homes in the postcode produce.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 03 Jul 2024

EPC Rating

E54

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Average

CO2 Emissions

9.1 t/year

Occupancy

Owner Occupied

Planning

Planning history

Applications and permits filed against 42 Harmer Green Lane, Welwyn, AL6 0AT, sourced from the PlanIt planning register.

42 Harmer Green Lane has been extended on multiple sides of the property across separate planning applications.

Sept 2012
ExtensionFull
In report
Extension: Single storey · Rear of property
Erection of single storey rear extension to create family room
Documents
4 docs on file
Reference
N6/2012/1543/FP
View planning record
Jan 2008
ExtensionFull
In report
Extension: Side of property
ERECTION OF ONE AND A HALF STOREY SIDE EXTENSION, INCORPORATING A DORMER WINDOW
Documents
2 docs on file
Reference
N6/2007/1754/FP
View planning record

Before you offer

We flagged 1 thing worth checking at 42 Harmer Green Lane

Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.

Larger development activity nearby

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Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

42 Harmer Green Lane has more than quadrupled in price since its earliest registered sale in 1999.

Current estimate

£1,166,000

Modelled from EPC, postcode comparables and a sale-price growth of 9.3% per year over 16 years.

See how we calculated this

Last sold (2015)

£1,150,000

Growth on file: 9.3% per year over 16 years.

Sales timeline

12 November 2015Most recent
£1,150,000
+325.9%over 16 years
18 July 1999
£270,000

Median price across the last 5 sales in AL6 0AT: £1,726,000 (2025–2018).

Nearby sales in AL6 0AT

Before you offer

Everything we know about 42 Harmer Green Lane, in one report

What it's really worth, what could be wrong, and the planning, sales and area data in full.

What we flagged

Larger development activity nearby

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On the street

Versus other Harmer Green Lane homes

Four headline reads against 8 similar houses on this street, drawn from the latest EPC and Land Registry data.

42 Harmer Green Lane is notably below the street on epc rating.

Price per m²

£4,713

Street avg £5,085

On par

Floor Area

244 m²

Street avg 255 m²

On par

Habitable Rooms

8 rooms

Street avg 8 rooms

On par

CO₂ Emissions

9.1 t/year

Street avg 7.6 t/year

On par

Comparables

Similar properties nearby

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

£1.3m

1 Badgers Walk, Tewin

AL6 0HP

4 bed

£909k

1 Churchfield Road, Tewin

AL6 0JW

4 bed2 bath

£879k

1 Chestnut Walk

AL6 0SB

4 bed

£813k

1 Barneswood

AL6 0EU

4 bed

£770k

1 Copper Beeches

AL6 0SS

4 bed2 bath

£719k

1 Bluebells

AL6 0XD

4 bed

£1.2m

1 Desborough Drive, Tewin

AL6 0HQ

5 bed2 bath

£1.1m

1 Acorn Glade, Digswell

AL6 0AZ

5 bed

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Welwyn district page.

Full Welwyn report

Rail-style transport is unusually close for this postcode.

Crime

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Welwyn North Railway Station — bus stop.

Closest school

0.8 km

St John's CofE Primary School. 14 schools nearby.

Go deeper on the local area

The full report breaks down crime, transport links, schools and air quality in depth.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 42 Harmer Green Lane, Welwyn, AL6 0AT. Each answer is also embedded as structured data for search engines.