A developer wants to build homes for sale and rent next to a Metro stop - even though the Metro will not open until 2027.
Bartra Capital Property is promoting the development - at Northwood in Santry - as a Metro North stop.
The proposal has been delayed due to ongoing reviews of the Metro route, but Bartra has told the Herald it intends to proceed.
It hopes to get permission for a mixed-use development of 100 build-to-rent apartments, 250 beds in a "shared living" environment and 100 social houses.
The 4.5-acre site is located 200m south of the M50 and is zoned for development as part of the Metro economic corridor.
Bartra said it had been "attempting to progress this for the last three years", but has been "held up" by the ongoing review of the proposed Metro route. Last month, Transport Infrastructure Ireland (TII) published the emerging preferred route.
TII is now expected to allow the Metro from Swords to Charlemont, via Dublin Airport, to proceed.
"The route now proposed and its alignment will affect our previous design approach in terms of site layout," said Bartra.
"We will need to work closely with TII to allow development to progress at the earliest opportunity and TII has indicated a willingness to do this."
The company said its "general approach" is for high-density, high-rise scheme "appropriate for a location adjacent to a Metro station".
Around 100 social houses will be leased to the local authority.
Bartra expects to commence design work shortly and hopes to make a Strategic Housing Development fast track planning application to An Bord Pleanala within six months.
Local Fine Gael TD Noel Rock said the promise of new housing in the area is to welcomed in the area.
"Even before the first shovel goes into the ground for the Metro, we can see it's going to kick-start development right along this corridor, giving the city what it needs: more housing, and high quality transport to match," he said.
"It's fantastic news for Ballymun and surrounds, and will transform the area for decades to come."
The Metro has been long-delayed amid political debates over funding and potential routes.