Stonewall is a three-bedroom detached house in Mayfield (TN20 6DR). It has a recorded floor area of 110 m² (around 1184 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (May 2019) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in August 2018 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Poor to Good and hot-water efficiency went from Very Poor to Good. The recommended improvements would push it to C (score 78). Records show the property has been extended at some point in its history. The home occupies a corner plot.
Sale prices here have outpaced England HPI: 43.6% per year against 0% for the wider region. Today's modelled estimate of £690,000 is 23.2% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£473/sq ft) was about 51.3% above the typical sold price in the postcode. 2 planning records sit against the property, 1 approved, 0 refused. The record references conservation-area consent, which constrain future alterations. Last sale on file: £560,000 in August 2019.
Stonewall sits within a conservation area — exterior works face additional planning controls.
SINGLE STOREY TIMBER OUTBUILDING FOR USE AS A GARDEN ROOM
Stonewall changed hands twice within eighteen months — unusual for the area.
£690,000
Modelled from EPC, postcode comparables and a sale-price growth of 43.6% per year over 1 year.
£560,000
Growth on file: 43.6% per year over 1 year.
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Price per m² for Stonewall runs comfortably ahead of the street norm.
Price per m²
£5,091
Street avg £4,114
Floor Area
110 m²
Street avg 112 m²
Habitable Rooms
5 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
0.3 km

Daytime· 07:00 – 23:00
46.8dB

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Changes detected from historical EPC data
Heating system upgraded to a more efficient system
Heating controls changed
Hot water system upgraded
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
FELL 1X ASH AND 1X MIXED SOFTWOOD HEDGE DUE TO POOR HEALTH SUBJECT TO REGULATIONS DESIGNATED MAYFIELD & COGGINS MILL CONSERVATION AREA, OCTOBER 1969/MARCH 2017
Full planning data for Stonewall, West Street, Mayfield, TN20 6DR
Every application and decision on this property and nearby, in full, in the report.
14 August 2019Most recent
£560,000
+43.6%over 9 months9 November 2018
£390,000
Median price across the last 5 sales in TN20 6DR: £525,500 (2024–2022).
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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Street avg 5 rooms
CO₂ Emissions
5.0 t/year
Street avg 5.6 t/year
TN20 6JB
Post Office — bus stop.
Closest school
0.4 km
Mayfield Church of England Primary School. 1 school nearby.
Night-time· 23:00 – 07:00
38.9dB