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Get started20 Neptune Square is a four-bedroom semi-detached house in Ipswich (IP4 1QH). It has a recorded floor area of 130 m² (around 1399 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (January 2017) shows a D (score 61), on the cusp of jumping into the C band. Earlier certificates rated it C (January 2009); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would push it to C (score 72). Main heating runs on electricity. At 130 m² this is the 56th smallest of 63 units on EPC record in the building, where floor areas span 38–181 m². The building's EPC ratings span E to B across 66 units on file. Other recorded features include a balcony and notable views.
Sale prices here have outpaced Ipswich HPI: 3.4% per year against 0% for the wider region. Today's modelled estimate of £485,000 is 10.2% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£314/sq ft) was about 38.3% above the typical sold price in the postcode. At 130 m² the property is well over the postcode median (75 m² across 62 EPCs), placing it in the larger end of the local stock. 9 years since the last transfer (February 2017).
20 Neptune Square valuation sits well clear of the typical sold price in this postcode.
£485,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.4% per year over 15 years.
£440,000
Growth on file: 3.4% per year over 15 years.
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20 Neptune Square is notably below the street on co₂ emissions.
Price per m²
£3,385
Street avg £2,862
Floor Area
130 m²
Street avg 73 m²
Habitable Rooms
5 rooms
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
Fore Street — bus stop.

Daytime· 07:00 – 23:00
55.0dB

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1 February 2017Most recent
£440,000
+54.4%over 14 years25 September 2002
£285,000
+7.5%over 8 months31 January 2002
£265,000
Median price across the last 5 sales in IP4 1QH: £182,000 (2025–2024).
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Energy costs, comparable sales, crime, schools and transport

Street avg 3 rooms
CO₂ Emissions
5.4 t/year
Street avg 2.8 t/year
IP4 1PA
Closest school
0.3 km
Suffolk New College. 31 schools nearby.
Flood risk
Low
From the Environment Agency.
Night-time· 23:00 – 07:00
45.5dB