RIA Group Construction – Full-Service Design and Build in Orange County
RIA Group Construction is a licensed, bonded, and insured design-and-build firm serving Orange County and Southern California. Operating under California License #1143899, they manage residential construction projects from initial concept through to final inspection — all handled by a single, dedicated team. The company was originally founded in 2004 under the name RAP Construction Group, spending over two decades delivering high-end residential work across Los Angeles County, including Beverly Hills, Bel-Air, and Calabasas. RIA Group represents the same ownership and management, now focused exclusively on Orange County.
Their approach centers on keeping every phase of a project — architecture, design, permitting, construction, and final walkthrough — under one roof. A dedicated project manager oversees each job from start to finish, which means no handoffs between separate teams and fewer opportunities for miscommunication or unexpected costs.
Services Offered by RIA Group Construction
RIA Group handles a broad range of residential construction and remodeling work across Orange County. Their services include:
- Whole Home Renovation – Complete top-to-bottom transformations managed on a defined timeline and budget.
- New Home Construction – Custom home builds designed to the client's specifications and California building standards.
- Kitchen Remodeling – Design-to-build kitchen renovations tailored to the homeowner's needs.
- Bathroom Remodeling – Renovations featuring quality fixtures, tilework, and functional design.
- Room Additions and ADUs – Expansions ranging from guest suites to accessory dwelling units, including detached ADU builds and in-law suite construction.
- Pool and Hardscaping – Custom pool installations and outdoor design work.
As an ADU contractor serving Orange County, RIA Group manages the full process of accessory dwelling unit construction — from design and permitting through to completed build. Whether a client is looking for a detached ADU builder, a garage conversion contractor, or an in-law suite builder, RIA Group handles the necessary permits and coordinates with local code offices throughout the county. Their familiarity with Orange County municipalities — including Irvine, Newport Beach, Costa Mesa, and Laguna Beach — means they have working knowledge of local requirements that affect ADU and granny flat projects.
Room additions and backyard cottage builds are part of their standard scope of work, and they work with homeowners to determine what type of ADU — whether a JADU, detached unit, or converted structure — best fits the property and the client's goals.
How RIA Group Manages Projects
RIA Group follows a structured process for each project. After an initial inquiry, they aim to follow up within 24 hours, schedule an in-home visit within three to five business days, and deliver a fully itemized written estimate within one week of that visit. Their pricing model is built around transparency — the estimate reflects what the client will be charged, with no hidden costs introduced later in the process.
Each project is assigned a dedicated project manager who handles communication, scheduling, and oversight throughout construction. Clients receive written timelines and regular updates, and the project manager remains the consistent point of contact from design through final inspection.
RIA Group works exclusively with licensed and vetted subcontractors in Orange County, and they emphasize that their commitment to a project does not end at the final walkthrough. If issues are identified during the final inspection, they address them before considering the project complete.
They currently serve all 34 cities in Orange County, including Anaheim, Irvine, Newport Beach, Huntington Beach, Costa Mesa, Laguna Beach, Fullerton, Santa Ana, and surrounding communities. For projects in adjacent areas of Los Angeles or San Diego County, availability can be confirmed directly.
