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Get startedKing Johns Castle is a detached house in Tewkesbury (GL20 6EB). It has a recorded floor area of 231 m² (around 2490 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (April 2010) shows an E (score 44), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 58). The latest certificate is from April 2010, so improvements made since then won't be reflected.
Sale prices here have outpaced Tewkesbury HPI: 1.3% per year against 0% for the wider region. Today's modelled estimate of £1,171,000 is 44.6% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£325/sq ft) was about 65.5% above the typical sold price in the postcode. At 231 m² the property is well over the postcode median (153 m² across 11 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 1 approved, 0 refused. The record references listed-building consent, which constrain future alterations. Most recent transfer: March 2022 at £810,000. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
King Johns Castle's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 23 Apr 2020
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Application for the approval of details subject to conditions 2 and 3 of planning application ref 13/00136/FUL
King Johns Castle's sale-price growth has lagged the wider UK trajectory across its history on file.
£1,171,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.3% per year over 19 years.
£810,000
Growth on file: 1.3% per year over 19 years.
On price per m², King Johns Castle stands well clear of the street.
Price per m²
£3,501
Street avg £2,693
Floor Area
231 m²
Street avg 220 m²
Habitable Rooms
9 rooms
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
0.3 km

Daytime· 07:00 – 23:00
45.8dB

Proposed internal alterations including insertion of two flue outlets. Proposed demolition of attached outbuilding (Grade II * Listed building ref: 1201162 )
1 more application for this property
Join to see all planning history.
18 March 2022Most recent
£810,000
+1.3%over 5 years8 July 2016
£800,000
+9.6%over 4 years22 July 2011
£730,000
+15.0%over 8 years27 September 2002
£635,000
Median price across the last 5 sales in GL20 6EB: £350,000 (2025–2021).
1 September Cottages Mythe Road Tewkesbury
Sold Aug 2025
1 Redcliffe Mythe Road Tewkesbury
Sold Jun 2024
Mythe Court Cottage Mythe Road Tewkesbury
Sold Jun 2022
1 King John Cottages Mythe Road Tewkesbury
Sold Jul 2021
Mythe Water Tower Mythe Road Tewkesbury
Sold Mar 2021
Street avg 7 rooms
CO₂ Emissions
15.0 t/year
Street avg 12.0 t/year
GL20 6DW
Water Tower — bus stop.
Closest school
1.3 km
Mitton Manor Primary School. 6 schools nearby.
Night-time· 23:00 – 07:00
39.6dB
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