48a, Harmer Green Lane, Welwyn, AL6 0AT
About 48a
48a is a six-bedroom detached house in Welwyn (AL6 0AT). It has a recorded floor area of 353 m² (around 3800 sq ft), construction records dating it to 2007 onwards and council tax band G. There is a swimming pool on the plot, uncommon for the area. Other recorded features include attached land beyond the plot. The latest certificate (August 2018) shows a C (score 80), near the top of the C band. The recommended improvements would push it to B (score 83).
At 353 m² the property is well over the postcode median (241 m² across 8 EPCs), placing it in the larger end of the local stock. 11 planning records sit against the property, 7 approved, 4 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Across 2008–2018, sale prices on this property compounded at 7.3% per year. On a £-per-square-foot basis, the last sale (£496/sq ft) was about 50.4% above the typical sold price in the postcode. Sold October 2018 for £1,885,000.
Know exactly what you're buying at 48a
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
- Bedrooms6
- Bathrooms4
- Open-plan layoutYes
- Dining roomYes
- Utility roomYes
- EnsuiteYes
- StudyYes
Outside
- Private gardenYes
- GarageDouble
- LandYes
- Swimming poolYes
Energy performance
48a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
48a has been extended on multiple sides of the property across separate planning applications.
- Jun 2017ConditionsIn report
Variation of condition 1 (Approved plans) on planning permission 6/2016/0322/HOUSE (Erection of a first floor rear extension together with roof alterations)
- Reference
- 6/2017/0527/VAR
- Dec 2016ConditionsIn report
Approval of details reserved by condition 3 (Location of scaffolding and other equipment) on planning permission 6/2016/0322/HOUSE
- Reference
- 6/2016/2191/COND
We flagged 1 thing worth checking at 48a
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
Latest sale on 48a was the highest on Land Registry record across the postcode.
£1,806,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 10 years.
£1,885,000
Growth on file: 7.3% per year over 10 years.
Sales timeline
4 October 2018Most recent
£1,885,000
+108.3%over 10 years27 April 2008
£905,000
Median price across the last 5 sales in AL6 0AT: £1,201,264 (2025–2015).
Nearby sales in AL6 0AT
Everything we know about 48a, 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 Harmer Green Lane homes
48a outperforms the street on habitable rooms by a wide margin.
Price per m²
£5,340
Street avg £4,996
Floor Area
353 m²
Street avg 242 m²
Habitable Rooms
11 rooms
Street avg 8 rooms
CO₂ Emissions
6.1 t/year
Street avg 7.9 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Welwyn North Railway Station — 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.