What type of property is 25 Harmer Green Lane, AL6 0AS?

25 Harmer Green Lane, AL6 0AS is a 5-bedroom detached house.

What was the last sold price for 25 Harmer Green Lane, AL6 0AS?

25 Harmer Green Lane, AL6 0AS last sold for £850,000 in October 2013, around 13 years ago. Before that, it sold for £380,000 in August 1997, so prices have been rising over 16 years on record. Source: HM Land Registry.

How has the value of 25 Harmer Green Lane, AL6 0AS changed over time?

Across 2 sales between August 1997 and October 2013, 25 Harmer Green Lane, AL6 0AS rose from £380,000 to £850,000, a change of £470,000. That works out to roughly +5.1% per year compounded over 16 years. Source: HM Land Registry.

What energy rating does 25 Harmer Green Lane, AL6 0AS have?

The current EPC rating for 25 Harmer Green Lane, AL6 0AS is C with a score of 73 out of 100, lodged in May 2024. It has improved from a E recorded in July 2013 (2 bands). Source: EPC Register.

What is the floor area of 25 Harmer Green Lane, AL6 0AS?

25 Harmer Green Lane, AL6 0AS has a recorded floor area of 249 m² (2,680 sq ft), around 50 m² per bedroom. That makes it about 46% larger than the median EPC-recorded property in AL6 0AS. Source: EPC Register.

How is 25 Harmer Green Lane, AL6 0AS heated?

The latest EPC at 25 Harmer Green Lane, AL6 0AS records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 25 Harmer Green Lane, AL6 0AS?

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

Where is 25 Harmer Green Lane, AL6 0AS located?

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

What is crime like near 25 Harmer Green Lane, AL6 0AS?

Police records around 25 Harmer Green Lane, AL6 0AS 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 25 Harmer Green Lane, AL6 0AS?

The closest primary school to 25 Harmer Green Lane, AL6 0AS is St John's CofE Primary School (878m), one of 12 primaries within walking distance. The closest secondary is Monk's Walk School (1.6km), with 2 secondaries in the surrounding area.

How well connected is 25 Harmer Green Lane, AL6 0AS?

The closest bus stop to 25 Harmer Green Lane, AL6 0AS is Mornington, 274m away. The nearest rail option is Welwyn North Rail Station, 330m away.

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25 Harmer Green Lane, Welwyn, AL6 0AS

Property type

Detached

Bedrooms

Bathrooms

Floor area

249 m²

2680 sq ft

Energy rating

Score 73

Council tax

Band G

Tenure

Owner Occupied

Overview

About 25 Harmer Green Lane

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

25 Harmer Green Lane is a five-bedroom detached house in Welwyn (AL6 0AS). It has a recorded floor area of 249 m² (around 2680 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (May 2024) shows a C (score 73). When first surveyed in July 2013 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Average, roof efficiency went from Average to Good and window efficiency went from Poor to Good.

At 249 m² the property is well over the postcode median (183 m² across 7 EPCs), placing it in the larger end of the local stock. Across 1997–2013, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £1,609,000 sits 89.3% above the 2013 sale of £850,000. Last sold in October 2013, so it's been off the market for around 13 years.

Before you offer

Know exactly what you're buying at 25 Harmer Green Lane

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

Already flagged here

Larger development activity nearby

£14.99

Trusted by UK homebuyers

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

Bedrooms5
Bathrooms3
Dining roomYes

Outside

Private gardenWrap around
GarageDouble, Detached

Building

RefurbishedYes

Energy

Energy performance

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

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

Current Certificate(1 of 2)

May 2024

EPC Rating

C73

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Good

CO2 Emissions

6.3 t/year

Occupancy

Owner Occupied

Property Improvements

Changes detected from historical EPC data

May 2024from Jul 2013

EPC improved fromE52toC73

Heating Controls

FullFull Control

Heating controls upgraded for better temperature management

Hot Water

AverageGood

Hot water efficiency improved

Windows

Partial DoubleFull Double

Windows upgraded, improving insulation

Wall Insulation

UninsulatedInsulated Cavity

Cavity wall insulation installed

Roof

AverageGood

Roof insulation improved

Low Energy Lighting

0%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 25 Harmer Green Lane, Welwyn, AL6 0AS, sourced from the PlanIt planning register.

25 Harmer Green Lane has no planning applications on record.

Notable planning nearby

1applications of note in the surrounding area

Before you offer

We flagged 1 thing worth checking at 25 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

£14.99

30-day money-back guarantee

Price

Sales history & valuation

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

25 Harmer Green Lane has more than doubled in price since the earliest registered sale in 1997.

Current estimate

£1,609,000

Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 16 years.

See how we calculated this

Last sold (2013)

£850,000

Growth on file: 5.1% per year over 16 years.

Sales timeline

3 October 2013Most recent
£850,000
+123.7%over 16 years
27 August 1997
£380,000

Median price across the last 5 sales in AL6 0AS: £776,000 (2025–2011).

Nearby sales in AL6 0AS

Before you offer

Everything we know about 25 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

£14.99

Trusted by UK homebuyers

On the street

Versus other Harmer Green Lane homes

Four headline reads against 7 similar houses on this street, drawn from the latest EPC and Land Registry data.

Habitable Rooms for 25 Harmer Green Lane runs comfortably ahead of the street norm.

Price per m²

£3,414

Street avg £4,161

On par

Floor Area

249 m²

Street avg 218 m²

Above

Habitable Rooms

9 rooms

Street avg 8 rooms

Strongly above

CO₂ Emissions

6.3 t/year

Street avg 5.9 t/year

Below

Comparables

Similar properties nearby

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

£1.2m

1 Desborough Drive, Tewin

AL6 0HQ

5 bed2 bath

£1.1m

1 Acorn Glade, Digswell

AL6 0AZ

5 bed

£1.1m

1 Broom Hill

AL6 0SF

5 bed4 bath

£1.3m

1 Badgers Walk, Tewin

AL6 0HP

4 bed

£550k

1 Cob Lane Close, Digswell

AL6 0DD

5 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

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

0.3 km

Mornington — bus stop.

Closest school

0.9 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 25 Harmer Green Lane, Welwyn, AL6 0AS. Each answer is also embedded as structured data for search engines.