Cygnet House, Swan Street, Boxford, Sudbury, CO10 5NZ
About Cygnet House
Cygnet House is a three-bedroom detached house in Boxford, Sudbury, Sudbury (CO10 5NZ). It has a recorded floor area of 138 m² (around 1485 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (June 2021) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 68). Main heating runs on oil.
Across 1997–2022, sale prices on this property compounded at 11.2% per year. Today's modelled estimate of £588,000 is 12.9% below the 2022 sale of £675,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£454/sq ft) was about 103% above the typical sold price in the postcode. 4 planning records sit against the property, 1 approved, 2 refused. Past consents include tree works, meaningful when judging how the property has evolved. At 138 m² it's 26.2% larger than the typical home in the postcode (109 m² median across 39 EPCs). Most recent transfer: December 2022 at £675,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Outside
- Private gardenYes
- ParkingOff road
Energy performance
Cygnet House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
A a single-storey extension application was refused at Cygnet House in 2024.
- Mar 2026DemolitionFullIn report
Householder Application - Proposed demolition and rebuild of front boundary wall, to include tree removal.
- Agent
- Wincer Kievenaar Architects Ltd
- Documents
- 7 docs on file
- Reference
- DC/26/01410
- Oct 2024DemolitionFullIn report
Extension: Single storey
Householder Application - Erection of one and a half storey extension (following demolition of garage). Relocation oil tank with inclusion of screening to improve accessibility and repair and repoint existing boundary wall.
- Agent
- Wincer Kievenaar Architects Ltd
Extension- Documents
- 23 docs on file
- Reference
- DC/24/03130
We flagged 1 thing worth checking at Cygnet House
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.
- A planning decision worth checking
30-day money-back guarantee
Sales history & valuation
Price for Cygnet House has grown more than fourfold since the 1997 starting point.
£588,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.2% per year over 26 years.
£675,000
Growth on file: 11.2% per year over 26 years.
Sales timeline
9 December 2022Most recent
£675,000
+1457.7%over 25 years13 February 1997
£43,334
Median price across the last 5 sales in CO10 5NZ: £246,000 (2025–2024).
Nearby sales in CO10 5NZ
26 Swan Street, Boxford, Sudbury, CO10 5NZ
Sold Oct 2025
£137,21127a, Swan Street, Boxford, Sudbury, CO10 5NZ
Sold Feb 2025
£236,00027 Swan Street, Boxford, Sudbury, CO10 5NZ
Sold Nov 2024
£248,00023 Swan Street, Boxford, Sudbury, CO10 5NZ
Sold Mar 2024
£370,00013 Swan Street, Boxford, Sudbury, CO10 5NZ
Sold Sept 2021
£235,000
Versus other Swan Street homes
Cygnet House outperforms the street on price per m² by a wide margin.
Price per m²
£4,891
Street avg £2,763
Floor Area
138 m²
Street avg 141 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
7.9 t/year
Street avg 8.7 t/year
Similar properties nearby
1 Horners Green, Groton
CO10 5HB
1 Boxford Lane, Boxford
CO10 5JU
1 Holbrook Barn Road, Boxford
CO10 5HU
1 Mill Green, Edwardstone
CO10 5PZ
1 Daking Avenue, Boxford
CO10 5QA
1 Brook Hall Road, Boxford
CO10 5HS
1 Fen Street, Boxford
CO10 5HL
1 Groton Street, Groton
CO10 5EE
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Fleece — bus stop.
Closest school
0.3 km
Boxford Church of England Voluntary Controlled Primary School. 1 school 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
47.6dB

Night-time· 23:00 – 07:00
39.2dB







