If you are claiming a value of more than $5000 you must have an appraisal by a qualified appraiser and the appraiser must sign a copy of form 8283, that you must mail to the IRS after e-filing. (A financially responsible officer of the exempt organization must also sign form 8283.)
I suppose it might suffice if the county assessor will sign your form 8283. But I suspect they won’t.
