How much does it cost to get an OSSF design?
According to reports by homeowners, engineers and sanitarians, these services generally cost between $250 and $1000 for residential system plans. Three to ten days should be allowed for plan reviews and supporting documents. Since Harris County cannot issue a development (building) permit until after the “Permit to Construct” an OSSF is issued, you should start well in advance so that the issuance of your development permit will not be delayed.
