Are you a property professional?Get qualified leads from motivated homeowners.
Get startedAre you a property professional?Get qualified leads from motivated homeowners.
Get started146 Tunnel Cottages is a four-bedroom end-of-terrace house in Old Warden, Biggleswade, Biggleswade (SG18 9LU). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (April 2016) shows a C (score 70). When first surveyed in November 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Average to Good and window efficiency went from Poor to Good. The recommended improvements would lift it to A (score 101), a 2-band jump. Main heating runs on oil. The latest certificate is from April 2016, so improvements made since then won't be reflected.
3 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. Last changed hands 10 years ago, in September 2016. Today's modelled estimate of £758,000 is 29.6% above the 2016 sale price.
Recommended upgrades on file would lift this property by multiple EPC bands.
This certificate is over 10 years old and is no longer valid.Expired 22 Apr 2026
A a single-storey rear extension application was refused at 146 Tunnel Cottages in 2022.
Extension: Single storey · Rear of property
Single storey rear extension
£758,000
Modelled from EPC, postcode comparables.
£585,000
Recorded with HM Land Registry.
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
2.1 km

Daytime· 07:00 – 23:00
42.7dB

Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
Loft insulation upgraded to recommended levels
Floor insulation added or improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Single storey · Rear of property
Single storey rear extension.
1 more application for this property
Join to see all planning history.
15 September 2016Most recent
£585,000
Median price across the last 3 sales in SG18 9LU: £245,000 (2018–2001).
SG18 9UA
Haynes Turn — bus stop.
Closest school
2.5 km
Haynes Lower School. 1 school nearby.
Night-time· 23:00 – 07:00
35.7dB
Local expertise
An agent who knows your area
No obligation
You decide if and when to sell