San Gabriel Valley
Building Design &
ADU Plans in Monterey Park
Monterey Park has a dynamic residential market with strong demand for ADU development. We’ve completed numerous projects in the city and understand their building department’s expectations. Monterey Park’s hillside areas add complexity to some projects, but we have extensive experience with slope conditions and grading requirements.
Why Monterey Park Clients Work With Us
Whether the project is on a flat lot in central Monterey Park or a hillside property near the eastern edge of the city, we prepare plans that account for the specific site conditions and meet the city’s plan check requirements.
With 1,500+ projects completed across Los Angeles County since 2015, we bring a depth of experience that most firms can’t match. We don’t just know the California building code: we know how Monterey Park’s building department applies it.
Monterey Park properties near hillside areas may require additional grading analysis and slope setback compliance.
How review works in Monterey Park
Monterey Park reviews ADUs and additions through its Planning Division and Building Division. ADU plans go to the Planning Division by email for preliminary review, and once Planning has cleared them, they are submitted through the Building Division Portal. The City runs a Designer-Owned Pre-Approved ADU Program; as of June 2026, four plan sets had been approved under it. State law gives the City 60 days from a complete application to decide on an ADU, and 30 days on a pre-approved plan. We submit to Monterey Park the same way we submit everywhere: a complete set, the corrections answered in writing, and the permit carried through issuance.
Our Services in Monterey Park
ADU Design
Detached ADUs, garage conversions, junior ADUs, and two-story units. Permit-ready plans prepared for Monterey Park’s specific requirements.
Custom Home Design
Ground-up residential design from modern to traditional. Complete plan sets prepared for permitting.
Additions & Remodels
Room additions, second stories, kitchen and bath redesigns, whole-home renovations. Seamless integration with existing structures.
Plan Check Corrections
Plans stuck in review? We take over stalled projects, resolve code issues, and get permits approved.
Legalize Unpermitted Work
As-built documentation, code compliance analysis, and permit legalization for existing unpermitted additions and conversions.
Duplexes, Triplexes & Fourplexes
Duplexes, triplexes, and fourplexes, up to four units and two stories. Density analysis and code-compliant design.
Start Your Monterey Park Project
Free consultation. We’ll review your project and the permit path, then quote a flat fee in writing. No pressure, no obligation.