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Get started9 Duncan Close is a three-bedroom end-of-terrace house in Welwyn Garden City (AL7 3XP). It has a recorded floor area of 85 m² (around 915 sq ft) and council tax band D. The latest certificate (November 2009) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 65). The latest certificate is from November 2009, so improvements made since then won't be reflected.
Sale prices here have outpaced England HPI: 7.1% per year against 0% for the wider region. Today's modelled estimate of £413,000 is 14.7% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£394/sq ft) was about 40.2% above the typical sold price in the postcode. At 85 m² the property is well over the postcode median (56 m² across 36 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: an extension approved in 2022. Past consents include an extension, meaningful when judging how the property has evolved. On the market in May 2018 and unlisted since — roughly 8 years.
9 Duncan Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
This certificate is over 10 years old and is no longer valid.Expired 09 Nov 2019
9 Duncan Close has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
Erection of a single storey rear extension with insertion of roof light
9 Duncan Close valuation sits well clear of the typical sold price in this postcode.
£413,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.1% per year over 8 years.
£360,000
Growth on file: 7.1% per year over 8 years.
Floor Area for 9 Duncan Close runs comfortably ahead of the street norm.
Price per m²
£4,236
Street avg £5,008
Floor Area
85 m²
Street avg 57 m²
Habitable Rooms
4 rooms
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Knella Road — bus stop.
2 May 2018Most recent
£360,000
+75.6%over 8 years2 February 2010
£205,000
Median price across the last 5 sales in AL7 3XP: £365,000 (2025–2024).
Street avg 3 rooms
CO₂ Emissions
4.4 t/year
Street avg 2.4 t/year
AL7 3DA
Closest school
0.2 km
Holwell Primary School. 21 schools nearby.
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