San Gabriel Valley
Building Design &
ADU Plans in West Covina
West Covina is one of the larger cities in the San Gabriel Valley, with significant residential development activity. We’ve submitted numerous plans to West Covina’s building department for ADUs, room additions, and residential remodels. The city’s plan check process is systematic, and our plans are built around their specific requirements to reduce corrections.
Why West Covina Clients Work With Us
West Covina’s residential zones offer good ADU potential. We’ve worked across the city’s various neighborhoods and understand how lot sizes, zoning designations, and existing conditions affect what can be built on each property.
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 West Covina’s building department applies it.
West Covina’s building department has specific documentation requirements that differ from neighboring cities like Covina and Baldwin Park.
Our Work in West Covina
A 2026 ADU is in plan check after planning’s first corrections, the general-requirements packet and the ADU survey; a 2025 garage conversion ADU went to engineering with the grant deed and owner documents the City asked for. An interior remodel with an attached patio went through the administrative permit and subcommittee process in 2026, where the City raised a setback issue on an existing shed and we supplied the historical permit evidence that showed it legally existed; planning approved on June 4, 2026. HCD’s findings letter on West Covina’s ADU ordinance came from our complaint; it is on the Plan Check Advocacy page.
How review works in West Covina
City Planning handles administrative permits, ADU review and subcommittee routing; Building handles construction review.
What comes up most: a complete, separate planning application, and proof that an existing structure is legal when a setback is challenged.
Our Services in West Covina
ADU Design
Detached ADUs, garage conversions, junior ADUs, and two-story units. Permit-ready plans prepared for West Covina’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 West Covina Project
Free consultation. We’ll review your project and the permit path, then quote a flat fee in writing. No pressure, no obligation.