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Get startedBlenheim House is a detached house in Old Warden, Biggleswade, Biggleswade (SG18 9HQ). It has a recorded floor area of 237 m² (around 2551 sq ft) and construction records dating it to 1967-1975. The latest certificate (April 2022) shows an E (score 45), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 66). Main heating runs on oil.
At 237 m² the property is well over the postcode median (88 m² across 25 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Most recent transfer: September 2022 at £1,100,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Blenheim House's carbon output runs well above what efficient homes in the postcode produce.
Multiple extension applications run across more than a decade of planning history at Blenheim House.
Addition of a transparent opening velux type window on a side-facing roof face.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£1,151,000
Modelled from EPC, postcode comparables.
£1,100,000
Recorded with HM Land Registry.
Blenheim House outperforms the street on floor area by a wide margin.
EPC Rating
45 (E)
Street avg 49 (E)
Floor Area
237 m²
Street avg 90 m²
CO₂ Emissions
11.3 t/year
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
42.7dB

Extension: Single storey · Rear of property
Single storey rear extension with roof light.
2 more applications for this property
Join to see all planning history.
9 September 2022Most recent
£1,100,000
Median price across the last 5 sales in SG18 9HQ: £440,000 (2015–1995).
Street avg 5.9 t/year
Habitable Rooms
9 rooms
Street avg 4 rooms
Post Office — bus stop.
Closest school
2.1 km
Southill Lower School. 2 schools nearby.
Night-time· 23:00 – 07:00
35.5dB
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