The property occupies a number of freehold titles totalling 4683sq m at the junction of Great South Rd and Main Highway, locally known as the Harp of Erin intersection.
Auckland City Council's website says an average 44,753 cars pass the site every day.
The property has dual street frontage immediately south of the Z service station on Great South Rd.
It features two 1960s-era buildings, one occupied by Rod Milner Motors and the other by Beaurepaires.
Also on site is a workshop linked to a multi-level office building that fronts Main Highway.
The property also features a 1700sq m car yard that provides capacity for about 100 vehicles.
The Rod Milner component comprises a vehicle showroom, workshop, and office building. The upper levels are partially utilised as commercial office accommodation, with a residential apartment on the upper floor.
To the rear of the showrooms are two workshop areas, one used for fitting tyres and the other as a workshop.
Approached from the Main Highway, the multi-level building offers asphalt forecourt with several partially covered car parks at basement level.
Also, on the property, at 7 Main Rd, is a two storey house with four bedrooms, two bathrooms, and a double garage. Whalley says a notable feature of the site is that it extends through to Main Highway, offering dual street frontages and accesses.
"But it is the zoning that really tees up development potential here," he said.
"The property is zoned Business-Mixed Use under the Auckland Unitary Plan, which provides for generous options that allow for a wide variety of end uses.
"This block of land lies within the Southern Corridor, a place where extensive development has taken place during the last decade.
"Many of the car yard sites have been upgraded to showrooms occupied by franchise car dealerships, and to the south along Great South Rd is the extensive mid-rise Millennium Centre development.
"Greenlane is known for its leafy green streets and well-established housing. In the past few years we have seen many new residential developments and apartment blocks come into the area."