15a, Oaklea, Welwyn, AL6 0PT
About 15a
15a is a detached house in Welwyn (AL6 0PT). It has a recorded floor area of 238 m² (around 2562 sq ft). The latest certificate (September 2015) returns a B (score 84), comfortably above the UK average. The latest certificate is from September 2015, so improvements made since then won't be reflected.
7 planning records sit against the property, 4 approved, 3 refused. Past consents include tree works, meaningful when judging how the property has evolved. At 238 m² it's 25.3% larger than the typical home in the postcode (190 m² median across 14 EPCs). Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Today's modelled estimate of £922,000 is 14.5% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£314/sq ft) was about 27.2% above the typical sold price in the postcode. 11 years since the last transfer (November 2015).
Know exactly what you're buying at 15a
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
Energy performance
Achieving this rating across a home of this size is uncommon — larger homes typically score lower.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 29 Sept 2025
EPC Rating
Planning history
15a has been through 4 approved planning applications — a well-evolved property.
- Nov 2022Tree WorksTreesIn report
Reduce Oak tree in front garden by 2m height, 4m width, lift canopy to 3meters, as the tree is over growing and getting too close to the property. We want to stunt the growth of the root system. We also wish to remove dead and low hanging branches.
- Reference
- 6/2022/2172/TPO
- Dec 2013ConditionsIn report
Discharge of conditions 4 (sample materials), 5 (landscape details), 6 (Planting), 7 (Trees), 8 (Construction Method Statement), 10 ( Windows) for planning permission N6/2012/2339/FP - Erection of part one, part two storey house with integral garage
- Reference
- N6/2013/2192/DS
We flagged 1 thing worth checking at 15a
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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Sales history & valuation
Latest sale on 15a was the highest on Land Registry record across the postcode.
£922,000
Modelled from EPC, postcode comparables.
£805,000
Recorded with HM Land Registry.
Sales timeline
19 November 2015Most recent
£805,000
Median price across the last 5 sales in AL6 0PT: £675,000 (2025–2017).
Everything we know about 15a, 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 Oaklea homes
15a outperforms the street on epc rating by a wide margin.
Price per m²
£3,382
Street avg £3,394
Floor Area
238 m²
Street avg 182 m²
CO₂ Emissions
3.3 t/year
Street avg 7.7 t/year
Years Held
11 years
Street avg 14 years
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
The Avenue — bus stop.
Closest school
0.1 km
Oaklands Primary School. 9 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.