Land use permits are valid for one (1) year from the date of issuance. Permits may be extended for an additional year, provided significant construction has occurred. Land use permits cannot be extend for a third year expect by: 1) waiting 90 days after the permit expired and 2) completing a new application.
You can typically expect a 60 day window for CUP’s and variances because the item needs to be announced at a Planning Commission or Board of Adjustment meeting, published in the legal newspaper, and a public hearing will be held.
The designer and County do not determine, per se, if you are required to have a mound septic system, it is determined by the types of soils on the property. The better the soil (no rust/redox) the better the chance you will have for a traditional in-ground system.