Flat 1, 1 Powis Square, Brighton, BN1 3HH
About Flat 1
Flat 1 is a semi-detached house in Brighton (BN1 3HH). It has a recorded floor area of 31 m² (around 334 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (April 2019) shows an E (score 43), well below the UK norm with real room to improve. When first surveyed in December 2008 the rating was F, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would lift it to B (score 82), a 3-band jump. Main heating runs on to be used only when there is no heating/hot. At 31 m² this is the 7th smallest of 8 units on EPC record in the building, where floor areas span 25–33 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (43 versus a best of 74).
At 31 m² it sits well below the postcode median (50 m² across 48 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs). Across 2000–2021, sale prices on this property compounded at 6.6% per year. On a £-per-square-foot basis, the last sale (£524/sq ft) was about 49.7% above the typical sold price in the postcode. Most recent transfer: June 2021 at £175,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 22 April 2029
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Flat 1 has no planning applications on record.
But the area is active
23 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 1 has more than tripled in price since its earliest registered sale in 2000.
£189,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.6% per year over 21 years.
£175,000
Growth on file: 6.6% per year over 21 years.
Sales timeline
9 June 2021Most recent
£175,000
+288.9%over 21 years24 April 2000
£45,000
Median price across the last 5 sales in BN1 3HH: £282,500 (2025–2025).
Nearby sales in BN1 3HH
Flat 3, 5 Powis Square, Brighton, BN1 3HH
Sold Nov 2025
£477,500Flat 6, 4 Powis Square, Brighton, BN1 3HH
Sold Nov 2025
£195,000Flat 5, 2 Powis Square, Brighton, BN1 3HH
Sold Oct 2025
£282,5004a, Powis Square, Brighton, BN1 3HH
Sold Jul 2025
£350,000Basement Flat Rear, 1 Powis Square, Brighton, BN1 3HH
Sold Jun 2025
£147,500
Versus other Powis Square homes
EPC Rating for Flat 1 lags the street by a wide margin.
Price per m²
£5,645
Street avg £5,173
Floor Area
31 m²
Street avg 52 m²
Habitable Rooms
1 rooms
Street avg 2 rooms
CO₂ Emissions
2.7 t/year
Street avg 2.8 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
1110/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Clifton Hill — bus stop.
Closest school
0.3 km
St Mary Magdalen Catholic Primary School. 32 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
54.4dB

Night-time· 23:00 – 07:00
44.1dB







