21 Grasmere, Stevenage, SG1 6AT
About 21 Grasmere
21 Grasmere is a two-bedroom semi-detached house in Stevenage (SG1 6AT). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (October 2023) shows a C (score 70). The rating has held steady at C across 2 certificates since February 2013. Between certificates, lighting went from Average to Very Good. The recommended improvements would push it to B (score 87).
It hasn't traded since July 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2000–2007, sale prices on this property compounded at 9.3% per year. Today's modelled estimate of £325,000 sits 78.1% above the 2007 sale of £182,500. On a £-per-square-foot basis, the last sale (£283/sq ft) was about 23.5% above the typical sold price in the postcode. At 60 m² it's 18.9% smaller than the typical home in the postcode (74 m² median across 25 EPCs).
Know exactly what you're buying at 21 Grasmere
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
- Bedrooms2
- Bathrooms1
- CloakroomYes
Building
- Heating systemGas
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
21 Grasmere has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
Sales history & valuation
21 Grasmere's estimated value is more than triple its earliest registered sale price (2000).
£325,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.3% per year over 7 years.
£182,500
Growth on file: 9.3% per year over 7 years.
Sales timeline
5 July 2007Most recent
£182,500
+91.1%over 7 years30 March 2000
£95,500
Median price across the last 5 sales in SG1 6AT: £385,000 (2025–2022).
Everything we know about 21 Grasmere, 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 Grasmere homes
On habitable rooms, 21 Grasmere runs well behind the street norm.
Price per m²
£3,042
Street avg £3,840
Floor Area
60 m²
Street avg 81 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
2.4 t/year
Street avg 3.0 t/year
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
20/mo
Rising year-on-year across the wider district.
Nearest stop
0.3 km
Fairfield Way — bus stop.
Closest school
0.7 km
Round Diamond Primary School. 15 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
45.4dB

Night-time· 23:00 – 07:00
36.5dB