Seltzer Design Office is an architectural drafting and design service in Grantville, San Diego at 5959 Mission Gorge Rd, 92120, on the commercial corridor that runs north through Grantville toward Mission Trails Regional Park. The firm works primarily with builders, general contractors, homeowners, developers, and other architects and engineers who need construction documents prepared for permit submission and field construction. Specialization areas include second-floor additions over existing single-story structures, room additions, whole-house remodels, and construction documents for steel-and-concrete commercial buildings, covering the full range from simple residential expansions to multi-story commercial permit sets. Electrical panel sizing, circuit layouts, and service-upgrade specifications that appear on architectural plans coordinate with electrical contractors, and Interwest Electric in Grantville handles the wiring and panel installation side of projects documented by area drafting firms. The Mission Gorge Road address places the office in the Grantville commercial and light-industrial district, the same corridor lined with auto shops, breweries, and trade contractors that makes Grantville the College Area's primary construction-services hub. Production runs on AutoCAD Architecture software with in-house Title 24 energy calculation capability, eliminating the need for clients to subcontract a separate energy consultant for California residential and commercial building permit packages. The 92120 ZIP served from this location covers Grantville, Allied Gardens, and Del Cerro, three sub-communities where 1950s-through-1970s housing stock generates a steady pipeline of addition and remodel projects requiring architectural drawings. Pre-construction termite and wood-destroying organism inspections that inform framing plans for addition projects coordinate with pest control providers, and Harbor Pest Control in Grantville handles Section 1 and Section 2 inspection reports that architects reference when specifying replacement framing and sheathing. The firm maintains relationships with independent structural engineers and permit processors, allowing it to oversee a project from conceptual design through permit issuance as a single point of contact for clients who need turnkey document preparation.