A Loop Office Tower Just Sold for the Price of Parking Lots

The Signal:

• Office basis in secondary CBD product has reset to near land value.
• Conversion economics work when acquisition is a fifth of construction cost.
• Adaptive reuse is becoming a supply source, not a rescue plan.

A 141,593-square-foot Loop office building traded for $9.2 million. That is roughly $65 per square foot — less than the cost of the curtain wall on new construction, and a number that says the market has stopped pricing this asset as office at all.

The structure is what makes it work. Acquisition is $9.2 million; the conversion to roughly 170 apartments is budgeted near $40 million, with a construction loan around $30 million targeted. Land and shell are effectively free relative to the vertical spend.

That ratio is the whole conversion equation. Adaptive reuse fails when a seller still believes in the office basis and succeeds when acquisition drops to a rounding error against hard costs. Chicago's older Loop stock has now crossed that line.

The structural read is that obsolete office is quietly becoming the cheapest land in downtown America — and the resulting units land in a market where, per the same week's data, the apartment pipeline just hit a 2013 low.

Implications: Owners of non-competitive CBD office should mark to conversion value, not office comps — that is the real bid. Developers get a residential pipeline without land assembly or entitlement risk, but the underwriting lives entirely in floor plate, core location, and window line. For lenders, the diligence question shifts from lease-up to constructability: not what the building earns, but whether it can physically become apartments.