Knettishall House, Heath Road, Knettishall, Diss, IP22 2TQ
About Knettishall House
Knettishall House is a five-bedroom detached house in Knettishall, Diss, Diss (IP22 2TQ). It has a recorded floor area of 320 m² (around 3444 sq ft), construction records dating it to before 1900 and council tax band G. There is a swimming pool on the plot, uncommon for the area. Other recorded features include a conservatory, a self-contained annexe, outbuildings and attached land beyond the plot. The latest certificate (September 2021) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 84), a 3-band jump. Main heating runs on oil.
At 320 m² the property is well over the postcode median (94 m² across 3 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. One planning record on file: an extension approved in 2009. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Across 2007–2021, sale prices on this property compounded at 4% per year. Today's modelled estimate of £1,240,000 is 18.1% above the 2021 sale price. Last sale on file: £1,050,000 in December 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Knettishall House
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Dining roomYes
- EnsuiteYes
- StudyYes
- ConservatoryYes
Outside
- OutbuildingsYes
- LandYes
- Swimming poolYes
Energy performance
Knettishall House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Jul 2009PorchFullIn report
Extension: Two storey
Planning Application - Erection of two storey extension and (ii) front porch
Extension- Documents
- 8 docs on file
- Reference
- SE/09/0652
We flagged 1 thing worth checking at Knettishall House
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£1,240,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.0% per year over 15 years.
£1,050,000
Growth on file: 4.0% per year over 15 years.
Sales timeline
7 December 2021Most recent
£1,050,000
+76.5%over 14 years23 May 2007
£595,000
Everything we know about Knettishall House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Heath Road homes
On epc rating, Knettishall House runs well behind the street norm.
EPC Rating
52 (E)
Street avg 56 (D)
Floor Area
320 m²
Street avg 97 m²
CO₂ Emissions
16.0 t/year
Street avg 5.4 t/year
Habitable Rooms
8 rooms
Street avg 4 rooms
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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
0.7 km
Post Box Cottages — bus stop.
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
42.7dB

Night-time· 23:00 – 07:00
35.5dB