Chetwyn is a detached house in Mayfield (TN20 6AY). It has a recorded floor area of 187 m² (around 2013 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (January 2016) shows a C (score 70). The rating has held steady at C across 2 certificates since December 2011. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Poor. The latest certificate is from January 2016, so improvements made since then won't be reflected.
Sale prices here have outpaced England HPI: 5.9% per year against 0% for the wider region. Today's modelled estimate of £749,000 is 15.2% above the 2016 sale price. At 187 m² the property is well over the postcode median (64 m² across 9 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. Last changed hands 10 years ago, in March 2016.
This certificate is over 10 years old and is no longer valid.Expired 14 Jan 2026
Chetwyn sits within a conservation area — exterior works face additional planning controls.
Extension: Rear of property
REAR ADDITION OF SUN ROOM AND SIDE ADDITION TO FORM UTILITY AND CLOAKS
£749,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 11 years.
£650,000
Growth on file: 5.9% per year over 11 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed analysis
A written breakdown of everything that matters
On floor area, Chetwyn stands well clear of the street.
EPC Rating
70 (C)
Street avg 69 (C)
Floor Area
187 m²
Street avg 73 m²
CO₂ Emissions
5.3 t/year
Street avg 2.8 t/year
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
43.9dB

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Changes detected from historical EPC data
More low energy lighting installed
Solar water heating installed
REMOVE LIMB ONE NORWAY SPRUCE, CUT BACK ONE APPLE TREE, FELL ONE JAPANESE MAPLE AND ONE UNKNOWN TREE AND ONE LIQUID AMBAR SUBJECT TO REGULATIONS DESIGNATED MAYFIELD CONSERVATION AREA OCTOBER 1969- NOTE TPO 16, 1996 DOES NOT APPEAR TO AFFECT
Full planning data for Chetwyn, The Avenue, Mayfield, TN20 6AY
1 more on this property, plus every nearby application and full decision details, in the report.
21 March 2016Most recent
£650,000
+18.2%over 3 years8 June 2012
£550,000
+60.8%over 7 years7 January 2005
£342,000
Median price across the last 1 sales in TN20 6AY: £160,000 (1997–1997).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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Habitable Rooms
7 rooms
Street avg 4 rooms
TN20 6TL
Post Office — bus stop.
Closest school
0.1 km
Mayfield Church of England Primary School. 1 school nearby.
Night-time· 23:00 – 07:00
36.8dB