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ADU Design in San Luis Obispo, CA

The Central Coast's university and wine hub, San Luis Obispo is anchored by Cal Poly and surrounded by Edna Valley vineyards, with Diablo Canyon's seismic setting looming over regional design standards. A historic downtown, growing tech presence, and Mediterranean climate drive demand for campus, hospitality, winery, and infill development.

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Best price · Quotes back fast · PE stamps backed by Apex Grid Engineering

ADU plans, start to permit

Site plan, floor plans, elevations, structural design, and energy compliance — the complete drawing set your city needs to approve an accessory dwelling unit.

Designed for ADU rules

Many states now streamline ADU approvals with state-level rules on size, setbacks, and fees. We design to the current rules in your jurisdiction so nothing gets kicked back.

Fast and affordable

ADUs are small projects — they shouldn't carry big-firm fees or timelines. Lean process, best price, quotes back fast.

Project types

  • Wineries, tasting rooms, and production facilities
  • Cal Poly and institutional buildings
  • Downtown historic retrofits and adaptive reuse
  • Boutique hotels and hospitality
  • Residential infill and student housing
  • Agricultural and ag-processing facilities

Everything else your project needs

MEP Engineering in San Luis Obispo

Mechanical, electrical & plumbing design — permit-ready drawings, best price.

Structural Engineering in San Luis Obispo

Structural design, analysis & PE stamping — permit-ready drawings, best price.

Civil Engineering in San Luis Obispo

Site civil & land development — permit-ready drawings, best price.

PE Stamping in San Luis Obispo

Licensed PE stamps on your plans — fast turnaround, best price.

Pool Engineering in San Luis Obispo

Pool structural, systems & permits — engineered for plan check approval.

Engineering Cost Guide in San Luis Obispo

Straight answers on what engineering really costs.