Probate confirms who has legal authority to sign for the estate. Until that grant is issued, a lawyer acting for the buyer will not release funds against title that ISC has not yet recorded in the executor's name, so the legal paperwork has to catch up before possession.
Most executors build a longer condition period into the offer, often 60 to 90 days rather than the standard 30, to leave room for the estate file to move. A lawyer handling the estate can confirm where things stand before you commit to a possession date.
Pricing an inherited home has its own wrinkle, since the family often does not know what work was done over the years. Joel Dyck's hand-reviewed valuation walks the property and prices it as it actually is. Get your hand-reviewed valuation from Joel Dyck.