4 Grass Warren, Tewin, Welwyn, AL6 0JJ
About 4 Grass Warren
4 Grass Warren is a three-bedroom property in Tewin, Welwyn, Welwyn (AL6 0JJ). It has council tax band D. Other recorded features include notable views.
Last changed hands 11 years ago, in July 2015. Across the public record there are 4 sales, relatively high churn for a single property. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 1996–2015, sale prices on this property compounded at 8% per year.
Know exactly what you're buying at 4 Grass Warren
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
- Bedrooms3
- Bathrooms1
Outside
- GarageYes
- Notable viewsYes
Building
- RefurbishedYes
Energy performance
No EPC on record
This property doesn't have an Energy Performance Certificate yet. An EPC is required to sell or let — and unlocks our automated valuation.
Planning history
4 Grass Warren has been extended on multiple sides of the property across separate planning applications.
- Jun 2016ExtensionFullIn report
Extension: Two storey · Side of property
Two storey side extension
- Documents
- 8 docs on file
- Reference
- 3/16/1012/HH
- Aug 2008ExtensionFullIn report
Extension: Single storey · Rear of property
Single-storey rear extension.
- Documents
- 1 doc on file
- Reference
- 3/08/1339/FP
We flagged 1 thing worth checking at 4 Grass Warren
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
Price for 4 Grass Warren has grown more than fourfold since the 1996 starting point.
£380,000
Growth on file: 8.0% per year over 19 years.
Sales timeline
27 July 2015Most recent
£380,000
+52.0%over 9 years25 November 2005
£250,000
+44.5%over 6 years5 November 1999
£173,000
+98.9%over 3 years2 May 1996
£87,000
Median price across the last 5 sales in AL6 0JJ: £262,500 (2022–2002).
Nearby sales in AL6 0JJ
Everything we know about 4 Grass Warren, 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

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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Grasswarren Estate — bus stop.
Closest school
0.2 km
Tewin Cowper Church of England Voluntary Aided Primary School. 10 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.