21 Penn Road, Stevenage, SG1 1HY
About 21 Penn Road
21 Penn Road is an end-of-terrace house in Stevenage (SG1 1HY). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1930-1949 and council tax band A. At 24 m² this is the smallest unit on EPC record across the building (24–125 m²). The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (September 2025) shows a C (score 74). The rating has held steady at C across 3 certificates since October 2009. Between certificates, wall efficiency went from Poor to Very Good, window efficiency went from Average to Good and lighting went from Very Poor to Good.
It hasn't traded since December 2006, a hold of 20 years that's notably long for the area. Across the public record there are 4 sales, relatively high churn for a single property. At 24 m² it sits well below the postcode median (44 m² across 20 EPCs), making it one of the more compact homes locally. Across 1996–2006, sale prices on this property compounded at 14.5% per year. Today's modelled estimate of £114,000 is 42.5% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 127.6% above the typical sold price in the postcode.
Know exactly what you're buying at 21 Penn Road
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
Energy performance
21 Penn Road's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
High performance glazing installed
Wall insulation improved
Planning history
21 Penn Road has no planning applications on record.
Notable planning nearby
14applications of note in the surrounding area
We flagged 1 thing worth checking at 21 Penn Road
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
21 Penn Road has more than quadrupled in price since its earliest registered sale in 1996.
£114,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.5% per year over 11 years.
£80,000
Growth on file: 14.5% per year over 11 years.
Sales timeline
1 December 2006Most recent
£80,000
+110.5%over 5 years28 February 2001
£38,000
+8.6%over 10 months17 April 2000
£35,000
+84.2%over 3 years28 April 1996
£19,000
Median price across the last 5 sales in SG1 1HY: £173,000 (2022–2007).
Everything we know about 21 Penn Road, 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 Penn Road homes
Price per m² for 21 Penn Road runs comfortably ahead of the street norm.
Price per m²
£3,333
Street avg £1,380
Floor Area
24 m²
Street avg 43 m²
Habitable Rooms
1 rooms
Street avg 2 rooms
CO₂ Emissions
0.9 t/year
Street avg 1.3 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
20/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Penn Road — bus stop.
Closest school
0.2 km
Broom Barns Primary School. 30 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
54.8dB
Night-time· 23:00 – 07:00
45.2dB