Keystone House, Hall Lane, Roydon, Diss, IP22 5XL
About Keystone House
Keystone House is a five-bedroom detached house in Roydon, Diss, Diss (IP22 5XL). It has a recorded floor area of 262 m² (around 2820 sq ft) and construction records dating it to 1930-1949. The latest certificate (November 2022) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it D (June 2012); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Average to Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on oil. Other recorded features include a conservatory and outbuildings.
At 262 m² the property is well over the postcode median (130 m² across 9 EPCs), placing it in the larger end of the local stock. 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. Across 2014–2023, sale prices on this property compounded at 3.3% per year. Last sale on file: £625,000 in June 2023.
Know exactly what you're buying at Keystone House
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms3
- Dining roomYes
- Utility roomYes
- EnsuiteYes
- ConservatoryYes
Outside
- Private gardenYes
- GarageYes
- OutbuildingsYes
Energy performance
Keystone House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
Keystone House has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Keystone House valuation sits well clear of the typical sold price in this postcode.
£671,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 9 years.
£625,000
Growth on file: 3.3% per year over 9 years.
Sales timeline
19 June 2023Most recent
£625,000
+33.0%over 8 years17 August 2014
£470,000
Median price across the last 5 sales in IP22 5XL: £420,000 (2024–2016).
Nearby sales in IP22 5XL
8 Home Farm Barns, Hall Lane, Roydon, Diss, IP22 5XL
Sold Nov 2024
£500,0001 Home Farm Barns, Hall Lane, Roydon, Diss, IP22 5XL
Sold Jul 2019
£410,000Roydon Hall, Hall Lane, Roydon, Diss, IP22 5XL
Sold Jun 2017
£1,790,0002 Home Farm Barns, Hall Lane, Roydon, Diss, IP22 5XL
Sold Aug 2015
£355,000The Old Post Office, Hall Lane, Roydon, Diss, IP22 5XL
Sold Oct 2011
£435,000
Everything we know about Keystone House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Hall Lane homes
On floor area, Keystone House stands well clear of the street.
Price per m²
£2,385
Street avg £2,841
Floor Area
262 m²
Street avg 212 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
14.0 t/year
Street avg 11.4 t/year
Similar properties nearby
1 Bressingham Road, Roydon
IP22 5XW
1 Blenheim Way, Roydon
IP22 5RJ
1 Home Farm Barns, Hall Lane, Roydon
IP22 5XL
1 Malthouse Farm Barns, Malthouse Lane, Gissing
IP22 5UT
1 Higdon Close, Burston
IP22 5UG
1 Glebe Drive, Roydon
IP22 5BB
1 Lewis Drive, Roydon
IP22 5SL
1 Manor Road, Roydon
IP22 5QU
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
1.5 km
Old Dick Junction — bus stop.
Closest school
1.3 km
Roydon Primary School. 4 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
48.6dB

Night-time· 23:00 – 07:00
41.0dB