20 Attimore Close, Welwyn Garden City, AL8 6LN
About 20 Attimore Close
20 Attimore Close is a five-bedroom end-of-terrace house in Welwyn Garden City (AL8 6LN). It has a recorded floor area of 168 m² (around 1808 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (September 2018) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. Records show the property has been extended at some point in its history.
Held since December 2004 — that's 22 years off the open market, well above the local norm. At 168 m² the property is well over the postcode median (82 m² across 13 EPCs), placing it in the larger end of the local stock. 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. Today's modelled estimate of £800,000 sits 177.8% above the 2004 sale of £288,000. On a £-per-square-foot basis, the last sale (£159/sq ft) was about 57.9% below the postcode norm. 8 planning records sit against the property, 7 approved, 1 refused. Past consents include an extension, new windows and a garage conversion, meaningful when judging how the property has evolved.
Know exactly what you're buying at 20 Attimore Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms2
- Open-plan layoutYes
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenYes
Building
- Previously extendedYes
- RefurbishedYes
Energy performance
20 Attimore Close's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
Multiple extension applications run across more than a decade of planning history at 20 Attimore Close.
- Oct 2019ExtensionFullIn report
Extension: Single storey · Rear of property
Erection of a first floor rear extension and alterations to side and rear fenestration
- Reference
- 6/2019/1999/HOUSE
- Oct 2019ExtensionIn report
Extension: Single storey · Rear of property
Erection of first floor rear extension and alterations to existing side and rear fenestration
- Reference
- 6/2019/1994/EM
What's in 20 Attimore Close, Welwyn Garden City, AL8 6LN's planning history?
6 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
20 Attimore Close valuation sits well clear of the typical sold price in this postcode.
£800,000
Modelled from EPC, postcode comparables.
£288,000
Recorded with HM Land Registry.
Sales timeline
2 December 2004Most recent
£288,000
Median price across the last 5 sales in AL8 6LN: £515,000 (2025–2022).
Nearby sales in AL8 6LN
16 Attimore Close, Welwyn Garden City, AL8 6LN
Sold Jun 2025
£614,7299 Attimore Close, Welwyn Garden City, AL8 6LN
Sold May 2025
£600,0005 Attimore Close, Welwyn Garden City, AL8 6LN
Sold Apr 2024
£460,00011 Attimore Close, Welwyn Garden City, AL8 6LN
Sold Apr 2024
£475,00017 Attimore Close, Welwyn Garden City, AL8 6LN
Sold Jul 2022
£515,000
Everything we know about 20 Attimore Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Attimore Close homes
Price per m² for 20 Attimore Close lags the street by a wide margin.
Price per m²
£1,714
Street avg £5,432
Floor Area
168 m²
Street avg 83 m²
Habitable Rooms
8 rooms
Street avg 5 rooms
CO₂ Emissions
7.1 t/year
Street avg 3.3 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
Marsden Road — bus stop.
Closest school
0.3 km
Applecroft School. 17 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.