21 Mariner Avenue, Birmingham, B16 9DF
About 21 Mariner Avenue
21 Mariner Avenue is a three-bedroom detached house in Birmingham (B16 9DF). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1991-1995 and council tax band D. The latest certificate (December 2020) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2010. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would lift it to B (score 82), a 2-band jump.
At 69 m² it sits well below the postcode median (101 m² across 24 EPCs), making it one of the more compact homes locally. Last sale on file: £265,000 in March 2021. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1997–2021, sale prices on this property compounded at 5.6% per year. Today's modelled estimate of £309,000 is 16.6% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 128.3% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenSouth-facing
- GarageYes
Everything you need to know about 21 Mariner Avenue
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
Planning history
21 Mariner Avenue has no planning applications on record.
Notable planning nearby
43applications of note in the surrounding area
We flagged 2 things worth checking at 21 Mariner Avenue
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.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
21 Mariner Avenue has more than tripled in price since its earliest registered sale in 1997.
£309,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.6% per year over 24 years.
£265,000
Growth on file: 5.6% per year over 24 years.
Sales timeline
26 March 2021Most recent
£265,000
+60.6%over 13 years24 October 2007
£165,000
+123.0%over 8 years26 February 1999
£74,000
+2.8%over 1 year1 May 1997
£72,000
Median price across the last 5 sales in B16 9DF: £287,000 (2025–2022).
Nearby sales in B16 9DF
Versus other Mariner Avenue homes
On price per m², 21 Mariner Avenue stands well clear of the street.
Price per m²
£3,841
Street avg £2,300
Floor Area
69 m²
Street avg 100 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.1 t/year
Street avg 3.7 t/year
Everything you need to know about 21 Mariner Avenue
The true value, the hidden risks and the full sale history, in one report.
30-day money-back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
1.0 km
Edgbaston Village (West Midlands Metro) — subway entrance.
Closest school
0.2 km
St Paul's School for Girls. 49 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.