21 Sion Road, Bristol, BS3 3BD
About 21 Sion Road
21 Sion Road is a two-bedroom end-of-terrace house in Bristol (BS3 3BD). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1900-1929 and council tax band A. At 41 m² this is the 2nd smallest of 35 units on EPC record in the building, where floor areas span 40–127 m². The building's EPC ratings span E to C, with this unit at the top. Records show the property has been extended at some point in its history. The latest certificate (July 2023) shows a C (score 71). The rating has held steady at C across 4 certificates since April 2009. Between certificates, wall efficiency went from Very Poor to Poor; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
At 41 m² it sits well below the postcode median (72 m² across 34 EPCs), making it one of the more compact homes locally. Across 1998–2019, sale prices on this property compounded at 8.9% per year. Today's modelled estimate of £385,000 is 28.3% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£680/sq ft) was about 198.4% above the typical sold price in the postcode. Most recent transfer: October 2019 at £300,000.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
Outside
- Private gardenYes
Building
- Heating systemGas
- Previously extendedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Heating controls changed
Hot water efficiency decreased
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
21 Sion Road has no planning applications on record.
But the area is active
9 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Price for 21 Sion Road has grown more than fourfold since the 1998 starting point.
£385,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.9% per year over 21 years.
£300,000
Growth on file: 8.9% per year over 21 years.
Sales timeline
6 October 2019Most recent
£300,000
+79.6%over 5 years29 November 2013
£167,000
+234.3%over 15 years30 October 1998
£49,950
Median price across the last 5 sales in BS3 3BD: £380,000 (2025–2023).
Versus other Sion Road homes
21 Sion Road is notably below the street on epc rating.
Price per m²
£7,317
Street avg £3,754
Floor Area
41 m²
Street avg 44 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 1.3 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Sion Road — bus stop.
Closest school
0.2 km
Compass Point Primary School. 35 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
52.4dB

Night-time· 23:00 – 07:00
42.1dB







