What type of property is 21 Blackwater Close, CM1 7QJ?

21 Blackwater Close, CM1 7QJ is a 3-bedroom semi-detached house.

What was the last sold price for 21 Blackwater Close, CM1 7QJ?

21 Blackwater Close, CM1 7QJ last sold for £375,000 in August 2018, around 8 years ago. Source: HM Land Registry.

What energy rating does 21 Blackwater Close, CM1 7QJ have?

The current EPC rating for 21 Blackwater Close, CM1 7QJ is E with a score of 54 out of 100, lodged in April 2018. The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of 21 Blackwater Close, CM1 7QJ?

21 Blackwater Close, CM1 7QJ has a recorded floor area of 123 m² (1,324 sq ft), around 41 m² per bedroom. That makes it about 43% larger than the median EPC-recorded property in CM1 7QJ. Source: EPC Register.

How is 21 Blackwater Close, CM1 7QJ heated?

The latest EPC at 21 Blackwater Close, CM1 7QJ records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 21 Blackwater Close, CM1 7QJ?

21 Blackwater Close, CM1 7QJ is in council tax band D.

Where is 21 Blackwater Close, CM1 7QJ located?

21 Blackwater Close, CM1 7QJ sits in Chelmsford. It falls within the CM1 postcode district in Essex.

What is crime like near 21 Blackwater Close, CM1 7QJ?

Police records around 21 Blackwater Close, CM1 7QJ show an average of 8 reported crimes per month over the last 13 months. Violent crime makes up roughly 48% of reports, the most common category. The overall trend is rising (175% versus the prior period). Source: Police UK.

Which schools serve 21 Blackwater Close, CM1 7QJ?

The closest primary school to 21 Blackwater Close, CM1 7QJ is Perryfields Infant School (496m), one of 20 primaries within walking distance. The closest secondary is The Boswells School (728m), with 6 secondaries in the surrounding area.

What transport links are near 21 Blackwater Close, CM1 7QJ?

The closest bus stop to 21 Blackwater Close, CM1 7QJ is Blackwater Close, 97m away. In total there are 30 bus stops within the surrounding area.

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21 Blackwater Close, Chelmsford, CM1 7QJ

Property type

Semi-detached

Bedrooms

Bathroom

Floor area

123 m²

1324 sq ft

Energy rating

Score 54

Council tax

Band D

Tenure

Owner Occupied

Overview

About 21 Blackwater Close

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

21 Blackwater Close is a three-bedroom semi-detached house in Chelmsford (CM1 7QJ). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (April 2018) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 81), a 3-band jump.

At 123 m² the property is well over the postcode median (87 m² across 20 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £432,000 is 15.2% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£283/sq ft) was about 21.5% above the typical sold price in the postcode. Sold August 2018 for £375,000.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

Bedrooms3
Bathrooms1

Before you decide

Everything you need to know about 21 Blackwater Close

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

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The data behind every report

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

21 Blackwater Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.

EPC Rating

E54

Main Heating

Gas

Main Fuel

Gas

Hot Water

Average

Windows

Average

CO2 Emissions

6.6 t/year

Occupancy

Owner Occupied

Get a survey for this property

Level 3 Building Survey

Late 20th centurySemi-Detached HouseEPC EExtended multiple times (2+ extensions)

Because the property has been extended more than once, we believe a Level 3 building survey should be considered.

From £1,020 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Blackwater Close, Chelmsford, CM1 7QJ, sourced from the PlanIt planning register.

21 Blackwater Close has no planning applications on record.

But the area is active

4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

21 Blackwater Close valuation sits well clear of the typical sold price in this postcode.

Current estimate

£432,000

Modelled from EPC, postcode comparables.

See how we calculated this

Last sold (2018)

£375,000

Recorded with HM Land Registry.

Sales timeline

20 August 2018Most recent
£375,000

Median price across the last 5 sales in CM1 7QJ: £300,000 (2024–2022).

Nearby sales in CM1 7QJ

On the street

Versus other Blackwater Close homes

Four headline reads against 15 similar houses on this street, drawn from the latest EPC and Land Registry data.

On epc rating, 21 Blackwater Close runs well behind the street norm.

Price per m²

£3,049

Street avg £3,092

On par

Floor Area

123 m²

Street avg 97 m²

Strongly above

Habitable Rooms

5 rooms

Street avg 5 rooms

Above

CO₂ Emissions

6.6 t/year

Street avg 4.0 t/year

Strongly below

Before you decide

Everything you need to know about 21 Blackwater Close

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · every report is £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.

£447k

1 Boyne Drive

CM1 7QW

3 bed

£545k

1 Broomhall Gardens

CM1 7GE

3 bed2 bath

£429k

1 All Saints Close

CM1 7HT

2 bed1 bath

£437k

1 Court Road, Broomfield

CM1 7EW

4 bed2 bath

£339k

1 Coombe Rise

CM1 7DG

2 bed1 bath

£286k

1 Clobbs Yard, Broomfield

CM1 7AB

2 bed1 bath

£691k

1 Chichester Drive

CM1 7RY

4 bed2 bath

£737k

1 Butlers Close

CM1 7BE

4 bed3 bath

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Chelmsford district page.

Full Chelmsford report

Reported crime in the wider district is trending notably upward year-on-year.

Crime

8/mo

Rising 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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around CM1 7QJ from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

54.5dB

Low

Night-time road noise heatmap for CM1 7QJ

Night-time· 23:00 – 07:00

45.1dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Blackwater Close, Chelmsford, CM1 7QJ. Each answer is also embedded as structured data for search engines.