ADUs & Home Additions in Pasadena

Detached ADUs on Pasadena's Residential Lots

A detached ADU is the most flexible structure you can add to a Pasadena property. It sits independently on the lot, with its own entrance, kitchen and bath, and can be designed to complement the existing home without altering its footprint. Hollywood Contractor Corp handles detached ADU construction from the ground up, including foundation work, framing, roofing, siding and stucco, and all interior finishes. Because Pasadena runs its own building and planning department, every detached ADU project goes through the City of Pasadena for permits and inspections rather than a county agency, and our team coordinates that process directly. Lot size, slope, and access vary from block to block across Pasadena, so every detached ADU starts with a site review of setbacks, utilities, and grade before a plan is drawn.

• ✓Detached ADU construction from foundation through final finish
• ✓Siding, stucco, and roofing matched to the primary structure
• ✓Permit coordination through the City of Pasadena's own department
• ✓Foundation scoped to the specific lot conditions and soil type
• ✓Interior build-out including kitchen, bath, and utility connections
• ✓Site assessment for flat, sloped, and constrained lot configurations

Room Additions That Fit Pasadena's Architecture

A home addition expands the primary structure rather than adding a separate unit, and in Pasadena that means working carefully with the architectural character that defines so many of the city's neighborhoods. Craftsman bungalows in Bungalow Heaven, Spanish colonial revival homes near the Playhouse District, and mid-century properties in Hastings Ranch all have distinct proportions and exterior detailing that a well-executed addition should respect rather than contradict. Hollywood Contractor Corp approaches home additions as structural and architectural work together, not just square footage. That means matching rooflines, exterior materials, window profiles, and foundation depth to what already exists. Whether the project is a primary bedroom suite, a family room expansion, or a second story addition, the scope runs from foundation through roofing and exterior finish, handled by one team throughout.

• ✓Single-story and two-story room additions on Pasadena lots
• ✓Roofline and exterior material matching to existing structure
• ✓Foundation extension or new footings scoped to addition load
• ✓Structural wall removal and beam work where layouts require it
• ✓Bathroom and kitchen additions with full plumbing rough-in
• ✓Permit drawings and City of Pasadena plan check coordination

How ADU and Addition Projects Start in Pasadena

Pasadena's building and planning department handles all permit review and inspection for ADU and home addition projects within city limits, which means the approval timeline and documentation requirements are set by the city rather than Los Angeles County. State ADU law has reduced some of the discretionary barriers that once applied, but the City of Pasadena still requires complete plan sets, site plans, and in some cases energy compliance documentation before issuing permits. Hollywood Contractor Corp coordinates the full pre-construction process, from initial site assessment and design coordination through plan check submission and permit issuance, so property owners are not managing that process independently. Whether the project is a detached accessory dwelling unit near Caltech, a junior ADU conversion in Daisy Villa, or a room addition in Madison Heights, the process starts with a clear scope and a realistic timeline. Call (818) 264-1955 to get started.