We purchased a first and second defaulted mortgage on a 13.000 SF warehouse in a nearby city. We were able to negotiate a deed in lieu of foreclosure. The first thing we did was gut out everything back to a core and shell, had new roof screws put in and metal over old fiberglass skylights. We had leases for two spaces of about 3,000 sf each ready to sign and a buyer came in and purchased the building with him doing the build out for the tenants and he is using the balance for a robotics shop. You don't know where the buyer is but i think it is important to clear out the building, do minor repairs asap, and remove old landscaping that has overgrown the property in the past. We hire a good commercial agent to market and handle showings and contract. Total profit was $485,000 in just under 11 months start to finish.
Discounted notes is a good way to get into any rehab commercial buildings. Really get to know your market. Distressed office buildings in our area are fun to do. Most of the buildings are 10-20,000 sf that were single tenant (usually medical) thatwe repurpose by dividing into smaller space and condo out for the smaller companies.
You are on the right path. Keep it up.