Hello, we are a Material Supplier hired by a Property Owner for a Commercial Project Site in Ohio. It says on the preliminary notice information that "Suppliers Must Send Notice - Notice of furnishing due within 21 days of first furnishing labor or materials - or 21 days from the filing of a notice of commencement, if the notice of commencement is filed late - on projects other than single or double residences." Is it only when the notice of commencement is late? When submitting, it says it may not be required depending on our role. Also, right now, the General Contractor is not known right now. Is it mandatory to send a General Contractor a preliminary notice in Ohio on time to perfect a mechanic's lien if it comes to that? Or will just the Property Owner suffice? Thank you.