Send a written request for a phone conference with the manager. If the manager agrees with the RO then you can file a CAP Appeal – IRS Form 9423.
I would need more info, but the IRS will generally consider this when the 10-year statute is running out and there is equity. Is that the case here?
You need to pitch that there is a lot of time left on the statute, that the property creates an income stream necessary for the taxpayer to live, they have made every attempt to sell and tap the equity, etc. Assuming this applies of course….