I said state regulations as well. State regulations in my state:
[State-certified residential real estate appraisers may perform appraisals on residential real estate of one to four (1–4) residential units without regard to transaction value or complexity and may perform appraisal consulting in the area of residential real estate, if, and only if, performed in compliance with all state and federal laws, rules and regulations pertaining to the appraisal assignment. This designation permits the appraisal of vacant or unimproved land that may be utilized for one- to four- (1–4) family purposes. This certification does not permit the appraisal of subdivisions or of agricultural real estate. Individual parcels of property located within a residential subdivision shall be considered residential real estate. For all other appraisals, the appraisal report shall be signed by the state-certified residential real estate appraiser and a state-certified general real estate appraiser. For the purposes of this rule, “agricultural real estate” shall be defined as improved or unimproved land with a highest and best use and primary purpose devoted to income production by crops, livestock and other products of the soil (fruit, pasture, timberland, etc).]