11a, Briary Wood Lane, Welwyn, AL6 0TE
About 11a
11a is a four-bedroom detached house in Welwyn (AL6 0TE). It has a recorded floor area of 236 m² (around 2540 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (September 2015) shows a D (score 57), a step below the typical UK home. The recommended improvements would push it to C (score 80). The latest certificate is from September 2015, so improvements made since then won't be reflected. Other recorded features include attached land beyond the plot. Our model identifies extension potential, subject to local planning policy.
One planning record on file: a loft conversion approved in 2017. Past consents include a loft conversion, meaningful when judging how the property has evolved. At 236 m² it's 21.6% larger than the typical home in the postcode (194 m² median across 9 EPCs). Today's modelled estimate of £1,066,000 is 35.3% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 21.6% below the postcode norm. Last changed hands 10 years ago, in July 2016.
Know exactly what you're buying at 11a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Dining roomYes
Outside
- LandYes
Building
- Extension potentialPossible
Energy performance
11a'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This certificate is over 10 years old and is no longer valid.Expired 01 Sept 2025
EPC Rating
Planning history
- Feb 2017Loft ConversionFullIn report
Formation of dormer window and creation of additional rooms in the roof space
- Reference
- 6/2016/2663/HOUSE
We flagged 1 thing worth checking at 11a
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
30-day money-back guarantee
Sales history & valuation
11a valuation sits well clear of the typical sold price in this postcode.
£1,066,000
Modelled from EPC, postcode comparables.
£788,000
Recorded with HM Land Registry.
Sales timeline
13 July 2016Most recent
£788,000
Median price across the last 5 sales in AL6 0TE: £911,500 (2023–2019).
Nearby sales in AL6 0TE
Everything we know about 11a, 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

Versus other Briary Wood Lane homes
On floor area, 11a stands well clear of the street.
Price per m²
£3,339
Street avg £4,399
Floor Area
236 m²
Street avg 188 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
11.0 t/year
Street avg 6.3 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Mardley Avenue — bus stop.
Closest school
0.5 km
Oaklands Primary School. 6 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.