1a, Oaklea, Welwyn, AL6 0PT
About 1a
1a is a four-bedroom detached house in Welwyn (AL6 0PT). It has a recorded floor area of 179 m² (around 1927 sq ft), construction records dating it to 1996-2002 and council tax band G. The latest certificate (June 2022) returns a B (score 82), comfortably above the UK average. When first surveyed in April 2015 the rating was C, the property has climbed 1 band since. The recommended improvements would push it to A (score 97).
A recent sale: £645,000 in April 2025. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Across 1998–2025, sale prices on this property compounded at 3.1% per year. Today's modelled estimate of £755,000 is 17.1% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£335/sq ft) was about 35.5% above the typical sold price in the postcode.
Know exactly what you're buying at 1a
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
- EnsuiteYes
Outside
- Private gardenYes
- GarageDouble
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
Floor insulation added or improved
More low energy lighting installed
Solar PV panels (30 kWp) installed
Planning history
1a has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 1a
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
1a has more than doubled in price since the earliest registered sale in 1998.
£755,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.1% per year over 26 years.
£645,000
Growth on file: 3.1% per year over 26 years.
Sales timeline
10 April 2025Most recent
£645,000
-10.1%over 7 years27 July 2017
£717,500
+151.1%over 18 years30 October 1998
£285,700
Median price across the last 5 sales in AL6 0PT: £675,000 (2024–2011).
Everything we know about 1a, 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
Years Held for 1a lags the street by a wide margin.
Price per m²
£3,603
Street avg £3,375
Floor Area
179 m²
Street avg 186 m²
Habitable Rooms
6 rooms
Street avg 8 rooms
CO₂ Emissions
3.0 t/year
Street avg 7.7 t/year
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.