3 Collison Avenue, Barnet, EN5 3BQ
About 3 Collison Avenue
3 Collison Avenue is a four-bedroom semi-detached house in Barnet (EN5 3BQ). It has a recorded floor area of 179 m² (around 1927 sq ft). The latest certificate (October 2017) returns a high B (score 86), putting the home a stone's throw from an A rating. The recommended improvements would push it to A (score 93).
At 179 m² the property is well over the postcode median (73 m² across 77 EPCs), placing it in the larger end of the local stock. It changed hands recently, sold February 2025 for £930,000. 6 planning records sit against the property, 1 approved, 3 refused. Past consents include tree works, meaningful when judging how the property has evolved. Across 2018–2025, sale prices on this property compounded at 0.5% per year. On a £-per-square-foot basis, the last sale (£483/sq ft) was about 17.5% below the postcode norm.
Know exactly what you're buying at 3 Collison Avenue
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
- Bedrooms4
- Bathrooms3
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenYes
- ParkingYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Planning history
Planning history at 3 Collison Avenue is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
- Aug 2020Tree WorksTreesIn report
1 x Oak - Crown lift to 3m above ground level and reduce branches growing towards the house to provide 5m linear clearance between the building face and the crown of the tree ensuring that no branch of greater than 100mm diameter is removed as part of the lifting and reduction treatment, (Remove deadwood and any broken hanging branches). Standing in group G5 of Tree Preservation Order
- Documents
- 4 docs on file
- Reference
- TPP/0411/20
- Mar 2020Tree WorksTreesIn report
1 x Oak - Remove broken hanging branch(es) shown in the photo attached to applicant's e-mail dated 6th March 2020 only. Standing in group G5 of Tree Preservation Order
- Documents
- 3 docs on file
- Reference
- TPP/0208/20
What's in 3 Collison Avenue, Barnet, EN5 3BQ's planning history?
4 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
3 Collison Avenue valuation sits well clear of the typical sold price in this postcode.
£922,000
Modelled from EPC, postcode comparables and a sale-price growth of 0.5% per year over 6 years.
£930,000
Growth on file: 0.5% per year over 6 years.
Sales timeline
28 February 2025Most recent
£930,000
+3.3%over 6 years8 November 2018
£900,000
Median price across the last 5 sales in EN5 3BQ: £445,000 (2025–2024).
Nearby sales in EN5 3BQ
Flat 2, 15 Collison Avenue, Barnet, EN5 3BQ
Sold Oct 2025
£320,000Flat 11, 17 Collison Avenue, Barnet, EN5 3BQ
Sold Sept 2025
£442,500Flat 12, 17 Collison Avenue, Barnet, EN5 3BQ
Sold May 2025
£445,000Flat 5, 17 Collison Avenue, Barnet, EN5 3BQ
Sold Mar 2025
£462,500Flat 8, 15 Collison Avenue, Barnet, EN5 3BQ
Sold Aug 2024
£450,000
Everything we know about 3 Collison Avenue, 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 Collison Avenue homes
3 Collison Avenue is notably below the street on price per m².
Price per m²
£5,196
Street avg £5,380
Floor Area
179 m²
Street avg 176 m²
CO₂ Emissions
2.2 t/year
Street avg 2.2 t/year
Years Held
1 years
Street avg 7 years
Similar properties nearby
The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Barnet Hospital A&E Department — bus stop.
Closest school
0.6 km
Whitings Hill Primary School. 15 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
50.2dB

Night-time· 23:00 – 07:00
40.7dB