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Get started21 Sea Road is a three-bedroom detached house in Carlyon Bay, St. Austell, St Austell (PL25 3SF). It has a recorded floor area of 156 m² (around 1679 sq ft), construction records dating it to 1976-1982 and council tax band E. The latest certificate (January 2019) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in March 2009 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Average and lighting went from Average to Very Good; while roof efficiency dropped from Average to Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 77). Other recorded features include a conservatory.
Sale prices here have outpaced England HPI: 3.7% per year against 0% for the wider region. Today's modelled estimate of £573,000 is 21.9% above the 2019 sale price. Sold July 2019 for £470,000. Across the public record there are 4 sales, relatively high churn for a single property. 3 planning records sit against the property, 2 approved, 0 refused.
21 Sea Road's carbon output runs well above what efficient homes in the postcode produce.
Non material amendment in relation to Decision Notice PA20/04778 dated 21.08.2020
21 Sea Road valuation sits well clear of the typical sold price in this postcode.
£573,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.7% per year over 14 years.
£470,000
Growth on file: 3.7% per year over 14 years.
On price per m², 21 Sea Road runs well behind the street norm.
Price per m²
£3,013
Street avg £4,398
Floor Area
156 m²
Street avg 172 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km

Daytime· 07:00 – 23:00
44.4dB

Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation upgraded
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Submission of details to discharge Conditions 3 and 4 in respect of Decision Notice no. PA20/04778 dated 21.08.2020
1 more application for this property
Join to see all planning history.
19 July 2019Most recent
£470,000
+40.3%over 7 years17 February 2012
£335,000
-6.9%over 4 years27 July 2007
£360,000
+28.6%over 2 years20 April 2005
£280,000
Median price across the last 5 sales in PL25 3SF: £620,000 (2025–2024).
CO₂ Emissions
6.0 t/year
Street avg 5.3 t/year
PL25 3TR
Glebe House — bus stop.
Closest school
0.3 km
Charlestown Primary School. 10 schools nearby.
Night-time· 23:00 – 07:00
36.3dB
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