13 Blackwater Close, Chelmsford, CM1 7QJ
About 13 Blackwater Close
13 Blackwater Close is a five-bedroom semi-detached house in Chelmsford (CM1 7QJ). It has a recorded floor area of 127 m² (around 1367 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (September 2025) shows a C (score 75), near the top of the C band. When first surveyed in April 2010 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Poor to Good. Other recorded features include a self-contained annexe.
At 127 m² the property is well over the postcode median (87 m² across 20 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). It changed hands recently, sold May 2026 for £480,000. Across 2000–2026, sale prices on this property compounded at 5.5% per year. Today's modelled estimate of £539,000 is 12.3% above the 2026 sale price. On a £-per-square-foot basis, the last sale (£351/sq ft) was about 47.2% above the typical sold price in the postcode. One historical planning record sits against the property in 2018.
What this property has
Inside
- Bedrooms5
- Bathrooms2
- Dining roomYes
- Utility roomYes
Outside
- Private gardenRear
Energy performance
EPC Rating
Certificate validity
Valid until 11 September 2035
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Loft insulation upgraded to recommended levels
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
1 application on record at 13 Blackwater Close, Chelmsford, CM1 7QJ
- Oct 2018ExtensionFullOutcome in report
Extension: Single storey · Side of property
Proposed single storey side extension.
- Documents
- 6 docs on file
- Reference
- 18/01410/FUL
Unlock 13 Blackwater Close, Chelmsford, CM1 7QJ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn
- All 1 application on this property in full, plus 4 notable nearby
- The 6 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 13 Blackwater Close was the highest on Land Registry record across the postcode.
£539,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.5% per year over 26 years.
£480,000
Growth on file: 5.5% per year over 26 years.
Sales timeline
28 May 2026Most recent
£480,000
+100.0%over 16 years26 May 2010
£239,995
+100.0%over 9 years6 September 2000
£119,995
Median price across the last 5 sales in CM1 7QJ: £300,000 (2024–2022).
Nearby sales in CM1 7QJ
4 Blackwater Close, Chelmsford, CM1 7QJ
Sold Aug 2024
£280,00024 Blackwater Close, Chelmsford, CM1 7QJ
Sold Feb 2024
£300,0005 Blackwater Close, Chelmsford, CM1 7QJ
Sold Apr 2022
£225,00018 Blackwater Close, Chelmsford, CM1 7QJ
Sold Mar 2022
£385,0002 Blackwater Close, Chelmsford, CM1 7QJ
Sold Jan 2022
£352,000
Versus other Blackwater Close homes
Years Held for 13 Blackwater Close lags the street by a wide margin.
Price per m²
£3,780
Street avg £3,208
Floor Area
127 m²
Street avg 97 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.2 t/year
Street avg 4.2 t/year
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The neighbourhood at a glance
Crime
420/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Blackwater Close — bus stop.
Closest school
0.5 km
Perryfields Infant School. 26 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
54.5dB

Night-time· 23:00 – 07:00
45.1dB







