Edsel Drive ADU: 14 Issues, Type & Structural Conflicts

The project

A prefabricated ADU (Accessory Dwelling Unit) project in California. InspectMind reviewed the combined drawing set and identified fundamental conflicts between the stated construction classification and actual structural details, major discrepancies between floor plans and elevations showing essentially different buildings, missing foundation information, and multiple California Building Code violations, issues that would have caused immediate permit rejection.

Project type

ADU · California · Prefab

Codes referenced: 2022 CA Building Code · CBC Section 602 · CBC Section 1804.4 · CBC Section 2304.12

Sample findings

1. Type VB Classification with Trailer Hitch

   Critical

   Drawings specify "Construction Type VB" (permanent wood-frame), but the "HITCH VIEW" elevation shows a trailer hitch, fundamentally incompatible for permit classification.

2. Floor Plan and Elevations Show Different Buildings

   Critical

   Floor plan shows 1 exterior door; elevations show 3 doors. "BACK VIEW" shows symmetrical facade that doesn't exist on floor plan. Window locations don't match.

3. Missing Pier Locations Referenced But Not Shown

   Critical

   Foundation Plan Note 5 references symbol "N" for pier locations on floor plan, but A3 contains no such symbols, foundation cannot be constructed.

4. Zero Roof Slope from Conflicting Dimensions

   High

   Eave height at 12' and ridge height at 12' means zero slope, contradicts the gable roof graphic and violates drainage requirements.

5. Dimension String Missing 2'-10"

   High

   Interior dimensions sum to 24'-7" but overall length is 27'-5", nearly 3 feet of building unaccounted for in the layout.

6. Wood Framing in Contact with Earth Fill

   High

   Porch detail shows 2x4 studs adjacent to pea gravel/sand with only poly sheeting: CBC requires concrete, masonry, or cement plaster separation.

Issue categories

Construction Classification

Type VB vs. mobile/manufactured conflicts, regulatory path issues

Document Coordination

Floor plan vs. elevation mismatches, missing referenced information

Site & Grading

Slope requirements, drainage distances, survey disclaimers

Code Compliance

Heating requirements, wood protection, mechanical ventilation

Value delivered

• 14 issues surfaced before permit submission
• Fundamental classification conflict identified
• Plan vs. elevation discrepancies caught
• CBC grading and wood protection violations flagged