11 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
About 11 The Walled Garden
11 The Walled Garden is a four-bedroom mid-terrace house in Tewin, Welwyn, Welwyn (AL6 0BZ). It has a recorded floor area of 137 m² (around 1475 sq ft), construction records dating it to 1996-2002 and council tax band G. The latest certificate (September 2017) shows a C (score 70). The recommended improvements would push it to B (score 83).
3 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension, partial demolition and a conservatory, meaningful when judging how the property has evolved. Across 2000–2018, sale prices on this property compounded at 3.7% per year. Today's modelled estimate of £787,000 is 17.4% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£455/sq ft) was about 53.9% above the typical sold price in the postcode. Last sold in February 2018, so it's been off the market for around 8 years.
Know exactly what you're buying at 11 The Walled Garden
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
Energy performance
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Jun 2020DemolitionFullIn report
Extension: Single storey · Rear of property
Demolition of conservatory and replacement with single storey rear extension.
Extension- Documents
- 11 docs on file
- Reference
- 3/20/0833/HH
- Jul 2004ConservatoryFullIn report
Extension: Rear of property
Rear conservatory
Extension- Reference
- 3/04/1178/FP
We flagged 1 thing worth checking at 11 The Walled Garden
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
11 The Walled Garden valuation sits well clear of the typical sold price in this postcode.
£787,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.7% per year over 18 years.
£670,550
Growth on file: 3.7% per year over 18 years.
Sales timeline
8 February 2018Most recent
£670,550
+36.2%over 11 years10 November 2006
£492,500
+39.1%over 6 years7 August 2000
£354,000
Median price across the last 5 sales in AL6 0BZ: £802,500 (2025–2022).
Nearby sales in AL6 0BZ
6 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
Sold Mar 2025
£802,50013 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
Sold Nov 2024
£675,0007 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
Sold Oct 2024
£870,0002 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
Sold Nov 2022
£735,00016 The Walled Garden, Tewin Water, Tewin, Welwyn, AL6 0BZ
Sold Nov 2022
£850,000
Everything we know about 11 The Walled Garden, 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 The Walled Garden homes
Price per m²
£4,895
Street avg £5,006
Floor Area
137 m²
Street avg 139 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
4.0 t/year
Street avg 4.2 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
Robin Mead — bus stop.
Closest school
0.4 km
Waterside Academy. 16 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.