National Development told the BPDA this week it will soon file plans for a three-building, 700,000-square-foot life-sciences R&D complex at 1170 Soldiers Field Rd., where WBZ long maintained a backup AM tower and where the TV station lands its helicopter.
The plans for buildings of seven and eight stories on the six-acre site hinge on the Newton developer's earlier plans to replace a small office building on Soldiers Field Road at Everett Street with new offices and studios for WBZ. The BPDA board approved that project in December.
Once the station is in its new home, National would begin construction of one of the three buildings and two levels of underground parking, as well as sidewalks and the like. The building would have ground-floor retail space.
The other two buildings would only go up when "market conditions" are right, the company said in a letter of intent.
In addition to filing plans for the three buildings, National Development says it will file for a "planned development area" designation for the site - which would let it and the BPDA basically toss the site's existing zoning and negotiate specifics for the parcel.
1170 Soldiers Field Rd. filings.