If you have it sold, I would use a title company. They have a back office of real estate attorneys that can help you and give you direction about the process with no additional costs (Usually)
Basically, a title company is a customer service front for real estate attorneys and insurance agents. The title company makes sure all of the documents are in order, does courier services, does follow up, makes sure all the documents are in place, etc while real estate attorney's work behind the scenes checking the title.
If you haven't sold the property, we do buy properties nationwide. We also offer a consulting service if you want to put your condo on a "lease with an option to buy" program. Basically, you can lease the property for top dollar and sell for full appraised value at the end of the lease term. We have a consulting service that educates you about how to manage risks with rental properties, and have a company that offers products, such as default insurance. If tenant doesn't pay, they will cover your payments for up to 6 months in case of tenant default.