HELOC issue - Multi-Unit?

[Sam Stabler]

I live in a SFR property which we recently finished construction and received the Certificate of Occupancy for an ADU. The ADU was constructed since we needed an additional bedroom for our baby. I applied for a HELOC but now received a message saying their 3RD Party Appraisal Vendor could not do a drive-by appraisal because the property is considered a multi-unit which has caused an issue on my application.

Anyone care to give me any advice? My house is still considered a SFR. I don't believe the ADU effects the classification of a SFR.