18 Chalkdown, Stevenage, SG2 7BG
About 18 Chalkdown
18 Chalkdown is a detached house in Stevenage (SG2 7BG). It has a recorded floor area of 163 m² (around 1755 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (February 2016) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 77). The latest certificate is from February 2016, so improvements made since then won't be reflected.
At 163 m² the property is well over the postcode median (96 m² across 51 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Across 2016–2024, sale prices on this property compounded at 4.4% per year. On a £-per-square-foot basis, the last sale (£413/sq ft) was about 63.7% above the typical sold price in the postcode. Most recent transfer: October 2024 at £725,000.
Know exactly what you're buying at 18 Chalkdown
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
18 Chalkdown's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 25 Feb 2026
EPC Rating
Planning history
18 Chalkdown has an approved rear extension on the planning record.
- Feb 2003ConservatoryFullIn report
Extension: Rear of property
Rear conservatory
Extension- Reference
- 03/00004/FP
- Oct 2002ExtensionFullIn report
Extension: Side of property
Ground floor side extension and internal alterations, first floor side extension, detached garage
- Reference
- 02/00269/FP
We flagged 1 thing worth checking at 18 Chalkdown
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
18 Chalkdown saw 3 transfers in just over a decade — high turnover for the postcode.
£739,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 9 years.
£725,000
Growth on file: 4.4% per year over 9 years.
Sales timeline
29 October 2024Most recent
£725,000
+46.5%over 8 years30 March 2016
£495,000
-1.0%30 March 2016
£500,000
Median price across the last 5 sales in SG2 7BG: £360,000 (2025–2025).
Everything we know about 18 Chalkdown, 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 Chalkdown homes
On habitable rooms, 18 Chalkdown stands well clear of the street.
Price per m²
£4,448
Street avg £3,890
Floor Area
163 m²
Street avg 101 m²
Habitable Rooms
10 rooms
Street avg 6 rooms
CO₂ Emissions
6.6 t/year
Street avg 4.2 t/year
Similar properties nearby
1 Farm Cottage, Benington Park, Benington
SG2 7BU
1 Brockwell Shott, Walkern
SG2 7PJ
1 Arundel Close, Aston
SG2 7HW
1 Belasyse Cottages, Chells Lane
SG2 7AA
1 Bridgefoot Farm Barns, Church End, Walkern
SG2 7PB
1 Bury Grange Cottage, Ardeley
SG2 7AE
1 Cornfields
SG2 7RB
1 Boxfield Green
SG2 7DR
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Downlands — bus stop.
Closest school
0.7 km
The Nobel School. 23 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
46.3dB

Night-time· 23:00 – 07:00
37.1dB