Flat 1, 35 Key Street, Ipswich, IP4 1BZ
About Flat 1
Flat 1 is a semi-detached house in Ipswich (IP4 1BZ). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (May 2025) shows an F (score 37), near the bottom of the EPC scale. The recommended improvements would push it to E (score 43). At 38 m² this is the 2nd smallest of 6 units on EPC record in the building, where floor areas span 26–69 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (37 versus a best of 73).
Today's modelled estimate of £121,000 is 69.8% below the 2025 sale of £400,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. It changed hands recently, sold July 2025 for £400,000. At 38 m² it sits well below the postcode median (59 m² across 5 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).
Energy performance
EPC Rating
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 £820 · Includes VAT
Planning history
Flat 1 has no planning applications on record.
But the area is active
6 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£121,000
Modelled from EPC, postcode comparables.
£400,000
Recorded with HM Land Registry.
Sales timeline
15 July 2025Most recent
£400,000
Versus other Key Street homes
EPC Rating for Flat 1 lags the street by a wide margin.
EPC Rating
37 (F)
Street avg 55 (D)
Floor Area
38 m²
Street avg 52 m²
CO₂ Emissions
3.9 t/year
Street avg 3.5 t/year
Habitable Rooms
1 rooms
Street avg 2 rooms
Similar properties nearby
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Angel Lane — bus stop.
Closest school
0.5 km
Suffolk New College. 29 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
56.4dB

Night-time· 23:00 – 07:00
47.0dB







