51a, New Road, Welwyn, AL6 0AQ
About 51a
51a is a seven-bedroom detached house in Welwyn (AL6 0AQ). It has a recorded floor area of 430 m² (around 4627 sq ft), construction records dating it to 1996-2002 and council tax band H. The latest certificate (June 2010) shows a C (score 70). The latest certificate is from June 2010, so improvements made since then won't be reflected.
At 430 m² the property is well over the postcode median (279 m² across 11 EPCs), placing it in the larger end of the local stock. 7 bedrooms is on the larger side for this postcode, where 5 is the typical count. Across 2002–2014, sale prices on this property compounded at 3.5% per year. Today's modelled estimate of £2,413,000 sits 62.5% above the 2014 sale of £1,485,000. Last changed hands 12 years ago, in October 2014. 2 planning records sit against the property, 1 approved, 1 refused.
Know exactly what you're buying at 51a
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
- Bedrooms7
Energy performance
51a'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This certificate is over 10 years old and is no longer valid.Expired 01 Jun 2020
EPC Rating
Planning history
Council records include a part-single-part-two-storey side extension at 51a.
- Aug 2022RenovationFullIn report
Installation of 2 concrete piers finshed in render to support black metal rail.
- Reference
- 6/2022/1044/HOUSE
- Oct 2004ExtensionFullIn report
Extension: Part single, part two storey · Side of property
ERECTION OF PART TWO STOREY AND PART SINGLE STOREY SIDE EXTENSION, REAR BALCONY AND SIDE BOUNDARY RETAINING WALL
- Reference
- N6/2004/1198/FP
We flagged 1 thing worth checking at 51a
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
51a valuation sits well clear of the typical sold price in this postcode.
£2,413,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.5% per year over 12 years.
£1,485,000
Growth on file: 3.5% per year over 12 years.
Sales timeline
19 October 2014Most recent
£1,485,000
+14.2%over 3 years18 July 2011
£1,300,000
+33.3%over 9 years13 June 2002
£975,000
Median price across the last 5 sales in AL6 0AQ: £1,362,500 (2024–2019).
Everything we know about 51a, 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 New Road homes
51a is notably below the street on co₂ emissions.
Price per m²
£3,455
Street avg £4,339
Floor Area
430 m²
Street avg 296 m²
Habitable Rooms
13 rooms
Street avg 9 rooms
CO₂ Emissions
14.0 t/year
Street avg 8.7 t/year
Similar properties nearby
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
0.1 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.