23 Coval Avenue, Chelmsford, CM1 1TF
About 23 Coval Avenue
23 Coval Avenue is a three-bedroom semi-detached house in Chelmsford (CM1 1TF). It has a recorded floor area of 106 m² (around 1141 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (September 2025) shows a C (score 69), just inside the C band. When first surveyed in September 2009 the rating was G, the property has climbed 4 bands since. Between certificates, roof efficiency went from Average to Very Good, lighting went from Poor to Good and main heating went from Very Poor to Good. The recommended improvements would push it to B (score 81). Records show the property has been extended at some point in its history.
It changed hands recently, sold February 2026 for £510,000. Its energy rating outperforms most of the postcode (better than 78% of similar EPCs). Across 2009–2026, sale prices on this property compounded at 7.1% per year. On a £-per-square-foot basis, the last sale (£447/sq ft) was about 102.5% above the typical sold price in the postcode. 2 planning records sit against the property, 0 approved, 0 refused.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- CloakroomYes
- StudyYes
Outside
- Private gardenSouth-west-facing
- ParkingAllocated
Building
- Previously extendedYes
- RefurbishedYes
Energy performance
EPC Rating
Certificate validity
Valid until 1 September 2035
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Loft insulation upgraded to recommended levels
More low energy lighting installed
Hot water efficiency decreased
Get a survey for this property
Level 3 Building Survey
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
23 Coval Avenue has 2 separate extension applications on the council record.
2 applications on record at 23 Coval Avenue, Chelmsford, CM1 1TF
- Oct 2017ExtensionFullOutcome in report
Extension: Single storey · Rear of property
The construction of a single storey rear extension, which would extend beyond the rear wall of the original house by a maximum depth of 4m, for which the maximum height would be 4m, and for which the height of the eaves would be 2.5m.
- Documents
- 5 docs on file
- Reference
- 17/00093/HHPA
- More recent applications — locked
- ExtensionJan 2018Decision
Unlock 23 Coval Avenue, Chelmsford, CM1 1TF's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn
- All 2 applications on this property in full, plus 3 notable nearby
- The 11 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
23 Coval Avenue has more than tripled in price since its earliest registered sale in 2009.
£517,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.1% per year over 16 years.
£510,000
Growth on file: 7.1% per year over 16 years.
Sales timeline
27 February 2026Most recent
£510,000
+126.7%over 15 years26 May 2010
£225,000
+33.5%22 December 2009
£168,500
Median price across the last 5 sales in CM1 1TF: £470,000 (2025–2020).
Nearby sales in CM1 1TF
Versus other Coval Avenue homes
On years held, 23 Coval Avenue runs well behind the street norm.
Price per m²
£4,811
Street avg £3,142
Floor Area
106 m²
Street avg 111 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.5 t/year
Street avg 5.1 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
Fire Station — bus stop.
Closest school
0.5 km
King Edward VI Grammar School, Chelmsford. 30 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
54.8dB

Night-time· 23:00 – 07:00
46.1dB







