How does blended underwriting work on a mixed-use retail-to-residential conversion?

Mixed-use blended underwriting and the take-out path that works

The blended structure: retain ground-floor and second-floor retail (or restaurant or other commercial use) in place; convert upper floors from office (or hotel) to residential apartments. The blended structure reduces conversion construction cost (less plumbing-stack demolition, smaller residential floor count) and preserves a meaningful retail income stream.

Underwriting split: lender separately appraises and underwrites the retained retail (cap-rate-driven income capitalization on the in-place leases) and the as-converted residential (per-unit residential value, NOI cap-rated). Construction-loan sizing tests against the blended as-completed value; the binding constraint is usually the residential portion's stabilization risk.

Agency multifamily eligibility: per Fannie and Freddie multifamily program guidelines, mixed-use multifamily with more than 20% to 35% non-residential income (varies by program) falls outside agency. If non-residential income is inside the agency limit, the agency loan is one first mortgage on the whole property. A separate retail loan requires a legal split, such as a condominium. Two first liens on one unsplit fee are not an agency take-out. Mixed-use deals beyond the threshold take out into bank perm or CMBS.

Parking ratio considerations: zoning-required parking ratios are typically lower for mixed-use (residential + ground-floor retail) than for office. A conversion can sometimes free parking spaces for adaptive use (rooftop deck, ancillary commercial, sale to neighboring building). AB 2011 can limit parking on qualifying housing. NYC 467-m is a property-tax exemption and does not relax parking.