Firstone House is a mid-terrace house in Mayfield (TN20 6EJ). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (June 2022) shows a C (score 79), near the top of the C band. When first surveyed in June 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81). At 57 m² this is the 3rd smallest of 8 units on EPC record in Firstone House, where floor areas span 54–125 m². The building's EPC ratings span E to B across 8 units on file.
Sale prices here have outpaced England HPI: 5.5% per year against 0% for the wider region. Today's modelled estimate of £193,000 is 25.7% above the 2015 sale price. At 57 m² it sits well below the postcode median (134 m² across 23 EPCs), making it one of the more compact homes locally. On the market in March 2015 and unlisted since — roughly 11 years. Across the public record there are 6 sales, relatively high churn for a single property.
Firstone House's carbon output is low for the local stock.
No planning applications are recorded against Firstone House, Flat 8, Stone Cross, Mayfield, TN20 6EJ. The full report also covers planning activity across the surrounding area.
Full planning data for Firstone House, Flat 8, Stone Cross, Mayfield, TN20 6EJ
Every application and decision on this property and nearby, in full, in the report.
Firstone House has more than doubled in price since the earliest registered sale in 1998.
£193,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.5% per year over 17 years.
£153,500
Growth on file: 5.5% per year over 17 years.
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EPC Rating for Firstone House runs comfortably ahead of the street norm.
Price per m²
£2,693
Street avg £2,543
Floor Area
57 m²
Street avg 71 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
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
49.9dB

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Changes detected from historical EPC data
Hot water efficiency decreased
Window efficiency improved
Wall insulation upgraded
Wall insulation upgraded
17 March 2015Most recent
£153,500
+16.3%over 4 years16 March 2011
£132,000
-20.5%over 3 years12 September 2007
£166,000
+21.2%over 2 years18 March 2005
£137,000
+14.2%over 2 years18 October 2002
£120,000
+92.0%over 4 years26 June 1998
£62,500
Median price across the last 5 sales in TN20 6EJ: £850,000 (2025–2023).
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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CO₂ Emissions
1.2 t/year
Street avg 2.7 t/year
TN20 6AB
Aylwards House — bus stop.
Closest school
1.0 km
Mayfield Church of England Primary School. 2 schools nearby.
Night-time· 23:00 – 07:00
41.4dB