Since 1990, C. J. HEINTZ and ASSOCIATES has provided high quality design drawings to builders, contractors and homeowners for all types of residential projects ranging from custom homes, condominiums, single and multi-level additions, finished basements, garages (both attached and detached), porches, decks, patios and sheds. Your construction-ready drawings can be used for competitive bidding purposes or building permit applications. Finished drawings have started from "back of the napkin" sketches, cardboard models, photos, and basic catalog or newspaper plans... are customized to suit your individual needs... and conform to applicable residential construction and energy conservation codes. For situations that may require it, a registered State of Ohio Professional Engineer is available to review and approve your project.