Cost of accessory dwelling unit — Irvine, CA | AccessoryDwellingUnit Solutions

Looking for cost of accessory dwelling unit in Irvine, CA? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Irvine and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

The total price for an ADU depends on several moving parts, including the square footage, your foundation type, and local labor rates. Choosing high-end finishes or complex site prep will naturally increase the budget, while standard layouts help keep things manageable. Exact pricing confirmed free on the call.

Frequently asked in Irvine

What are the disadvantages of ADUs in Irvine?

How much does an ADU cost in California?

What are the rules for ADUs in California?

California has statewide ADU laws, but cities like Irvine also have their own specific zoning ordinances and building codes. These typically cover aspects like minimum lot size, setback requirements from property lines, and parking mandates. The pros you'll connect with are familiar with these local regulations.

Is an ADU allowed in Maryland?

This service specializes in connecting residents of specific California cities, like Irvine, with local ADU professionals. For ADU information and services in Maryland, you would need to consult with providers and authorities within that state. We can assist you with your California ADU projects.

What are the rules for ADUs in California?

Also serving nearby: Santa Ana · Costa Mesa · Mission Viejo · Orange · Garden Grove

All cities in California →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

314,621residents

4,795per sq mile

8ZIP codes served

Serving all of Irvine — population 314,621; about 4,795 residents per square mile across 65.6 sq mi. ZIP codes covered include 92602, 92603, 92604, 92606, 92612, 92614, 92616, 92617.

Neighborhoods served in Irvine: University Park, Woodbridge, Northwood, Walnut, Oak Creek — and every surrounding area.