What type of property is 21 Mornington, AL6 0AJ?

21 Mornington, AL6 0AJ is a 5-bedroom detached house.

What did 21 Mornington, AL6 0AJ sell for?

21 Mornington, AL6 0AJ last sold for £949,250 in May 2017, around 9 years ago. Before that, it sold for £281,000 in December 1996, so prices have been rising over 20 years on record. Source: HM Land Registry.

Has 21 Mornington, AL6 0AJ appreciated in value?

Across 2 sales between December 1996 and May 2017, 21 Mornington, AL6 0AJ rose from £281,000 to £949,250, a change of £668,250. That works out to roughly +6.1% per year compounded over 20 years. Source: HM Land Registry.

How energy efficient is 21 Mornington, AL6 0AJ?

The current EPC rating for 21 Mornington, AL6 0AJ is C with a score of 70 out of 100, lodged in October 2025. It has improved from a E recorded in August 2015 (2 bands). Source: EPC Register.

What is the floor area of 21 Mornington, AL6 0AJ?

21 Mornington, AL6 0AJ has a recorded floor area of 321 m² (3,455 sq ft), around 64 m² per bedroom. That makes it about 67% larger than the median EPC-recorded property in AL6 0AJ. Source: EPC Register.

How is 21 Mornington, AL6 0AJ heated?

The latest EPC at 21 Mornington, AL6 0AJ records mains gas as the main heating fuel. Source: EPC Register.

Are there any planning records for 21 Mornington, AL6 0AJ?

21 Mornington, AL6 0AJ has council approval for single-storey rear extension granted in September 2017 under ref. 6/2017/1644/HOUSE. Source: PlanIt planning register.

What council tax band is 21 Mornington, AL6 0AJ?

21 Mornington, AL6 0AJ 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 21 Mornington, AL6 0AJ located?

21 Mornington, AL6 0AJ sits in Welwyn. It falls within the AL6 postcode district in Hertfordshire.

What is crime like near 21 Mornington, AL6 0AJ?

Police records around 21 Mornington, AL6 0AJ 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 21 Mornington, AL6 0AJ?

The closest primary school to 21 Mornington, AL6 0AJ is St John's CofE Primary School (791m), one of 12 primaries within walking distance. The closest secondary is Monk's Walk School (1.9km), with 2 secondaries in the surrounding area.

What is the nearest station to 21 Mornington, AL6 0AJ?

The closest bus stop to 21 Mornington, AL6 0AJ is Mornington, 130m away. The nearest rail option is Welwyn North Rail Station, 529m away.

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21 Mornington, Welwyn, AL6 0AJ

4 planning records

Property type

Detached

Bedrooms

Bathrooms

Floor area

321 m²

3455 sq ft

Energy rating

Score 70

Council tax

Band G

Tenure

Owner Occupied

Overview

About 21 Mornington

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

21 Mornington is a five-bedroom detached house in Welwyn (AL6 0AJ). It has a recorded floor area of 321 m² (around 3455 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (October 2025) shows a C (score 70). When first surveyed in August 2015 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Good to Very Good, hot-water efficiency went from Poor to Good and lighting went from Average to Good.

At 321 m² the property is well over the postcode median (194 m² across 8 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 1996–2017, sale prices on this property compounded at 6.1% per year. Today's modelled estimate of £1,581,000 sits 66.6% above the 2017 sale of £949,250. On a £-per-square-foot basis, the last sale (£275/sq ft) was about 16.4% below the postcode norm. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include tree works and an extension, meaningful when judging how the property has evolved. On the market in May 2017 and unlisted since — roughly 9 years.

Before you offer

Know exactly what you're buying at 21 Mornington

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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

Bedrooms5
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.

21 Mornington's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 2)

Oct 2025

EPC Rating

C70

Main Heating

Electric & Gas

Main Fuel

Gas

Hot Water

Good

Windows

Average

CO2 Emissions

9.4 t/year

Occupancy

Owner Occupied

Property Improvements

Changes detected from historical EPC data

Oct 2025from Aug 2015

EPC improved fromE48toC70

Heating Controls

Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water

Main (No Stat)Main System

Hot water system upgraded

Roof

GoodVery Good

Roof insulation improved

Low Energy Lighting

29%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 21 Mornington, Welwyn, AL6 0AJ, sourced from the PlanIt planning register.

21 Mornington has been through 4 approved planning applications — a well-evolved property.

Apr 2023
Tree WorksTrees
In report
T2 - Hornbeam - Reduce in height by up to 4m and laterally by up to 3m to viable growth points
Reference
6/2023/0353/TPO
View planning record
Dec 2019
Tree WorksTrees
In report
Fell 1 x Maple tree T1 Fell 2 x Hornbeam tree T2 T3 Fell 1 x Horse Chestnut tree T4
Reference
6/2019/2438/TPO
View planning record

Before you offer

We flagged 1 thing worth checking at 21 Mornington

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.

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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.

21 Mornington has more than tripled in price since its earliest registered sale in 1996.

Current estimate

£1,581,000

Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 20 years.

See how we calculated this

Last sold (2017)

£949,250

Growth on file: 6.1% per year over 20 years.

Sales timeline

1 May 2017Most recent
£949,250
+237.8%over 20 years
4 December 1996
£281,000

Median price across the last 5 sales in AL6 0AJ: £920,000 (2022–2012).

Nearby sales in AL6 0AJ

Before you offer

Everything we know about 21 Mornington, 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 Mornington homes

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

21 Mornington outperforms the street on floor area by a wide margin.

Price per m²

£2,957

Street avg £3,630

Below

Floor Area

321 m²

Street avg 196 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 8 rooms

On par

CO₂ Emissions

9.4 t/year

Street avg 7.4 t/year

Strongly 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

0.1 km

Mornington — 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 21 Mornington, Welwyn, AL6 0AJ. Each answer is also embedded as structured data for search engines.