# ADU Builder & Home Additions in Irvine, CA | Remodel Your Vibe [Browser-friendly HTML version](https://www.remodelyourvibe.com/website-guide/pages/services/adus-additions/irvine/index) Source: https://www.remodelyourvibe.com/services/adus-additions/irvine Last modified: 2026-09-24T00:00:00.000Z Text part: 1 of 1 [Full website text index](https://www.remodelyourvibe.com/llms-full.txt) | [Services by city](https://www.remodelyourvibe.com/llms/services-by-city-005.txt) | [Previous page](https://www.remodelyourvibe.com/llms/pages/services/adus-additions/newport-beach/index.txt) | [Next page](https://www.remodelyourvibe.com/llms/pages/services/adus-additions/huntington-beach/index.txt) --- Image: Open-plan living room and kitchen with polished concrete floors 1. [Home](https://www.remodelyourvibe.com/) 1. [Services](https://www.remodelyourvibe.com/services) 1. [ADUs & Additions](https://www.remodelyourvibe.com/services/adus-additions) 1. Irvine Design · Permit · Build ### ADUs & Additions in Irvine Detached ADUs, garage conversions and additions, from plans to move-in. [Book a Consultation](https://www.remodelyourvibe.com/contact-us) [Call 818-300-2393](tel:+18183002393) #### Built for Irvine Homes Two approvals, not one: that is the rhythm of working in a master-planned city. The village association's architectural committee cares about roof material, stucco color and how a pool equipment enclosure reads from the common area; the city cares about code, setbacks and drainage into an engineered storm system. We prepare both submittals in parallel, and we design to the approved exterior palette rather than fighting it. Lots are planned and predictable: rectangular pads with consistent setbacks, walled rear yards and a defined side yard. Newer villages trend toward smaller usable rear yards with larger homes, while the older established villages and the custom enclaves offer genuinely deep backyards. We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, [CSLB license #1119054](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1119054) . Permits in Irvine: Plan review, permit issuance and inspections are handled by the Building and Safety Division within the Community Development Department, with submittals and inspection scheduling through the city's online permits system. Some minor residential replacements are available as self-service permits, while pools, spas, additions and ADUs require full plan check. Permits for Group R-3 residential work become invalid eighteen months from issuance unless extended in writing by the Building Official. Essentially every village is governed by a master association and often a sub-association as well, and the architectural review committee runs on its own separate track from city plan check. Under state law an association cannot ban an ADU outright, but it can enforce reasonable exterior standards for materials, color and placement. Permit details checked September 2026 against [City of Irvine](https://cityofirvine.gov/community-development/building-safety) and [California law](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=4751) . Rules change, so we confirm them again for your parcel. What We Build - Parallel HOA architectural review packages - Slope and landscape easement mapping - Engineered drainage tie-in design - Detached ADUs, ground-up - Garage conversions to living space - Junior ADUs within the main house - Room additions and bump-outs - Second-story additions - Full kitchens and bathrooms in the ADU - Separate utility metering where required - Private entries, patios and landscaping - Plans, engineering and city submittals - Title 24 energy compliance Local Conditions #### What to Know in Irvine These local conditions change the scope, the schedule and the budget. 01 Rear yards back onto engineered slopes and association-maintained landscape easements far more often than onto neighboring property, which limits where a shell or foundation can legally sit. 02 Pads in the newer villages are cut-and-fill over expansive clay, so deepened footings and moisture-conditioned subgrade are common requirements on pool decks and casita slabs. 03 Site drainage is tied into a designed storm system with defined outlet points, so new hardscape has to be routed to an approved discharge rather than sheet-flowed toward a neighbor. 04 Side yards in the tighter tract product can be narrow, which may force hand-dig, conveyor or crane access for backyard excavation. Areas we serve in Irvine:Turtle RockWoodbridgeNorthwoodShady CanyonQuail HillOrchard Hills Investment #### What It Costs in Irvine Real Southern California price ranges, not teaser numbers. ##### Detached ADU $150,000 to $400,000+ What moves it: square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build ##### Garage conversion ADU $80,000 to $180,000 What moves it: whether the existing slab and framing meet current code, how far utilities have to run, and the finish level of the kitchen and bathroom ##### Plans, drawings and permit management $4,500 to $25,000+ What moves it: project type and size, whether structural engineering, Title 24 or a soils report is required, and how many jurisdictions or review bodies are involved Your lot, access and finishes set the price. We walk the site, then show you where every dollar goes. [Get a line-item price for your Irvine property](https://www.remodelyourvibe.com/contact-us) The Process #### How We Work in Irvine 01 ##### Feasibility We check lot size, setbacks, utilities and access to confirm what your property will actually support. 02 ##### Design & 3D Layout, elevations and finishes, modeled in 3D so you approve the unit before submittal. 03 ##### Plans & Permits We prepare the full drawing set, handle engineering and Title 24, and manage the city submittal and corrections. In Irvine that submittal goes to City of Irvine Community Development Department, Building and Safety Division. 04 ##### Foundation & Framing Site prep, foundation, framing and dry-in by our own crews. 05 ##### Systems & Finishes Electrical, plumbing, HVAC, insulation, then kitchen, bath and interior finishes. 06 ##### Final Inspection We pass final inspection, walk the unit with you and hand over the keys. Questions #### What Irvine Homeowners Ask Who issues the permits for this work in Irvine? City of Irvine Community Development Department, Building and Safety Division. Plan review, permit issuance and inspections are handled by the Building and Safety Division within the Community Development Department, with submittals and inspection scheduling through the city's online permits system. Some minor residential replacements are available as self-service permits, while pools, spas, additions and ADUs require full plan check. Permits for Group R-3 residential work become invalid eighteen months from issuance unless extended in writing by the Building Official. Essentially every village is governed by a master association and often a sub-association as well, and the architectural review committee runs on its own separate track from city plan check. Under state law an association cannot ban an ADU outright, but it can enforce reasonable exterior standards for materials, color and placement. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check. What makes building in Irvine different? Lots are planned and predictable: rectangular pads with consistent setbacks, walled rear yards and a defined side yard. Newer villages trend toward smaller usable rear yards with larger homes, while the older established villages and the custom enclaves offer genuinely deep backyards. One local condition that shapes the work: Rear yards back onto engineered slopes and association-maintained landscape easements far more often than onto neighboring property, which limits where a shell or foundation can legally sit. Which parts of Irvine do you work in? All of it, including Turtle Rock, Woodbridge, Northwood and Shady Canyon. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site. What does an ADU or addition cost in Irvine? Detached ADU: generally $150,000 to $400,000+ across Southern California. What moves it is square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build. We give line-item pricing after seeing the site rather than quoting a number over the phone. How long does an ADU take start to finish? Plan a realistic year. Design and engineering typically take one to three months, city plan check and corrections add several more, and construction usually runs four to eight months depending on size and site access. Is a garage conversion cheaper than a detached ADU? Usually yes, and often substantially, because the foundation, walls and roof already exist. The trade-offs are that you lose the garage, and older slabs and framing sometimes need upgrading to meet current code. Can I rent the ADU out? California ADU law is designed to allow long-term rental, and an ADU is one of the few ways to add rentable square footage to a single-family lot. Short-term rental rules vary by city, so confirm your local ordinance before counting on that income. Do you handle the permits? Yes. Plans, engineering, Title 24 and the city submittal are all handled in-house, including responding to plan-check corrections. That is a service we sell on its own, so it is not something we hand off. #### More Services in Irvine [Pool & Spa Remodeling in Irvine](https://www.remodelyourvibe.com/services/swimming-pool-spa/irvine) [Backyard & Outdoor Living in Irvine](https://www.remodelyourvibe.com/services/exterior-remodeling/irvine) [Kitchen, Bath & Interior Remodeling in Irvine](https://www.remodelyourvibe.com/services/interior-remodeling/irvine) [Plans, Permits & Design in Irvine](https://www.remodelyourvibe.com/services/plans-permits/irvine) [Everything we build in Irvine](https://www.remodelyourvibe.com/service-areas/irvine) #### ADUs & Additions Nearby [ADUs & Additions in Tustin](https://www.remodelyourvibe.com/services/adus-additions/tustin) [ADUs & Additions in Newport Beach](https://www.remodelyourvibe.com/services/adus-additions/newport-beach) [ADUs & Additions in Costa Mesa](https://www.remodelyourvibe.com/services/adus-additions/costa-mesa) [ADUs & Additions in Mission Viejo](https://www.remodelyourvibe.com/services/adus-additions/mission-viejo) [ADUs & Additions in Huntington Beach](https://www.remodelyourvibe.com/services/adus-additions/huntington-beach) [ADUs & Additions in Lake Forest](https://www.remodelyourvibe.com/services/adus-additions/lake-forest) Planning Guides #### Before You Build in Irvine Costs, materials and process notes from our own projects. [Irvine Outdoor Living Cost and HOA Approval Guide An Irvine backyard build runs $45,000 to $160,000 by yard size. Line-item costs, the two-step HOA and City approval path, Title 24 requirements and the side-gate access problem. Read guide](https://www.remodelyourvibe.com/articles/irvine-outdoor-living-cost-hoa-guide) [Irvine ADU Construction: City Rules, HOAs & Costs Irvine ADU construction must navigate both City regulations and HOA architectural guidelines. Here's how to build successfully in master-planned communities. Read guide](https://www.remodelyourvibe.com/articles/adu-irvine-california) [Pool Remodeling Cost in Orange County: Complete Guide Orange County pool remodeling costs explained: replastering, tile replacement, coping, equipment upgrades, and complete pool renovations with real pricing examples. Read guide](https://www.remodelyourvibe.com/articles/pool-remodeling-cost-orange-county) [Outdoor Living Trends in Irvine: 2026 Design Guide Irvine homeowners are investing in outdoor living like never before. Discover the trends defining backyards in Turtle Rock, Woodbury, Northwood, and throughout Irvine. Read guide](https://www.remodelyourvibe.com/articles/outdoor-living-trends-irvine) #### Planning an ADU in Irvine? Sit down with your project manager and get an accurate estimate. We call you back within one business day. [Book a Consultation](https://www.remodelyourvibe.com/contact-us) [818-300-2393](tel:+18183002393) Licensed, bonded & insured · [CSLB license #1119054](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1119054) --- End of text part 1 of 1. This page is complete.