12 Watson Heights, Chelmsford, CM1 1AF
About 12 Watson Heights
12 Watson Heights is a one-bedroom property in Chelmsford (CM1 1AF). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to 2012-2021. At 48 m² this is the 18th smallest of 69 units on EPC record in the building, where floor areas span 39–100 m². The building's EPC ratings span C to B, with this unit at the bottom. Other recorded features include a balcony. The latest certificate (January 2026) shows a C (score 80), near the top of the C band. Earlier certificates rated it B (October 2015); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average.
At 48 m² it sits well below the postcode median (69 m² across 68 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sold in November 2015, so it's been off the market for around 11 years. Today's modelled estimate of £219,000 is 12.3% above the 2015 sale price.
What this property has
Inside
- Bedrooms1
- Bathrooms1
- EnsuiteYes
Outside
- Communal gardenYes
- BalconyYes
Building
- RefurbishedYes
Energy performance
12 Watson Heights sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Certificate validity
Valid until 8 January 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
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Planning history
12 Watson Heights has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£219,000
Modelled from EPC, postcode comparables.
£194,995
Recorded with HM Land Registry.
Sales timeline
23 November 2015Most recent
£194,995
Median price across the last 5 sales in CM1 1AF: £235,000 (2026–2025).
Nearby sales in CM1 1AF
Versus other Watson Heights homes
On epc rating, 12 Watson Heights runs well behind the street norm.
Price per m²
£4,062
Street avg £4,144
Floor Area
48 m²
Street avg 64 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.0 t/year
Street avg 0.9 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
420/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
YMCA — bus stop.
Closest school
0.3 km
The Cathedral Church of England Voluntary Aided Primary School, Chelmsford. 34 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
53.4dB

Night-time· 23:00 – 07:00
44.4dB







