1b, Birdbush Avenue, Saffron Walden, CB11 4DJ
About 1b
1b is a semi-detached house in Saffron Walden (CB11 4DJ). It has a recorded floor area of 139 m² (around 1496 sq ft), construction records dating it to 2007 onwards and council tax band E. The latest certificate (August 2020) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (July 2010); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 86).
It hasn't traded since February 2011, a hold of 15 years that's notably long for the area. At 139 m² the property is well over the postcode median (64 m² across 33 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £526,000 sits 70.8% above the 2011 sale of £308,000. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved.
Know exactly what you're buying at 1b
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
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
More low energy lighting installed
Solar water heating installed
Planning history
1b has been extended on multiple sides of the property across separate planning applications.
- Jul 2014ExtensionFullIn report
Extension: Single storey · Front of property
Proposed single storey front extension.
- Documents
- 13 docs on file
- Reference
- UTT/14/1363/HHF
- Sept 2011ConservatoryFullIn report
Extension: Rear of property
Proposed rear conservatory
Extension- Documents
- 7 docs on file
- Reference
- UTT/1457/11/FUL
We flagged 1 thing worth checking at 1b
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
30-day money-back guarantee
Sales history & valuation
1b valuation sits well clear of the typical sold price in this postcode.
£526,000
Modelled from EPC, postcode comparables.
£308,000
Recorded with HM Land Registry.
Sales timeline
10 February 2011Most recent
£308,000
Median price across the last 5 sales in CB11 4DJ: £330,000 (2025–2022).
Nearby sales in CB11 4DJ
5a, Birdbush Avenue, Saffron Walden, CB11 4DJ
Sold Jun 2025
£340,0004 Birdbush Avenue, Saffron Walden, CB11 4DJ
Sold Mar 2025
£330,0001 Birdbush Avenue, Saffron Walden, CB11 4DJ
Sold Mar 2023
£615,00012 Birdbush Avenue, Saffron Walden, CB11 4DJ
Sold Jan 2023
£257,00020 Birdbush Avenue, Saffron Walden, CB11 4DJ
Sold Apr 2022
£230,000
Everything we know about 1b, 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 Birdbush Avenue homes
1b outperforms the street on floor area by a wide margin.
Price per m²
£2,216
Street avg £3,145
Floor Area
139 m²
Street avg 95 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.1 t/year
Street avg 2.8 t/year
Similar properties nearby
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1 Birdbush Avenue
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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
0.1 km
Rowntree Way — bus stop.
Closest school
0.7 km
Saffron Walden County High School. 7 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
47.9dB

Night-time· 23:00 – 07:00
37.8dB