Avorino Guide to ADU Construction in Orange County: What You Need to Know

Written byAvorino
·
PublishedJuly 19, 2023

Accessory Dwelling Units (ADUs) are transforming the way homeowners in Orange County maximize their property. Also known as granny flats, in-law suites, or secondary units, ADUs provide additional living space, rental income opportunities, and increased property value.

Whether you're considering a garage conversion, a detached unit, or an addition to your existing home, understanding ADU regulations, planning, and construction is essential. In this guide, Avorino, a trusted ADU builder in Orange County, will walk you through everything you need to know, from design and permits to construction and property value benefits.

What is an ADU and Why Build One?

Accessory Dwelling Units (ADUs) in Orange County, also known as granny flats or in-law suites, are self-contained housing units located on the same lot as single-family homes. ADUs provide a cost-effective solution to the housing shortage while offering homeowners an additional source of income.

Avorino, a trusted ADU builder in Orange County, guides homeowners through every step of ADU construction, ensuring your project is efficient, compliant, and adds long-term value.

Types of ADUs

ADUs come in several forms:

  • Attached ADUs: Built as an addition to your existing home, such as a basement or an attached room.
  • Garage Conversions: Transforming an existing garage into a fully functional ADU.
  • Detached ADUs: A separate building on the property, independent from the main house.
  • Additions to existing homes: Expanding part of your home to create an independent living unit.

Benefits of Building an ADU

Building an ADU can:

  • Generate rental income
  • Increase your property value
  • Provide housing for extended family
  • Contribute to community housing supply

Understanding ADU Regulations in Orange County

ADU Construction in Orange County: Permits and Local Regulations

California encourages ADU development through laws like Senate Bill 13 and Assembly Bills 68 & 881 (effective January 2020). These laws limit local restrictions on:

  • Minimum lot size
  • Maximum ADU dimensions
  • Off-street parking requirements

However, local city regulations still apply, including setbacks, height limits, design standards, and owner occupancy rules. Examples:

  • Anaheim: No owner occupancy requirement for ADUs
  • Newport Beach: Owner occupancy still required

For official California ADU laws, visit the California Department of Housing and Community Development.

How to Start Your ADU Project with Avorino

Building an ADU is a major project. Avorino offers full-service ADU construction in Orange County, including:

Initial Consultation

We discuss your goals, budget, and timeline, and answer all your questions about the ADU process.

Feasibility Study

We assess your property for ADU suitability, considering zoning, lot size, access, and utilities.

Design and Planning

Our architects and designers create an ADU design that meets your needs, blends with your property, and complies with regulations.

Permit Application

We handle the complex Orange County permit process, ensuring all state and local rules are met.

Construction

Our skilled team brings your ADU to life, delivering quality workmanship and timely completion.

How ADUs Increase Property Value

ADUs are a smart investment. According to a 2019 Appraisal Institute report, adding an ADU can increase property value by up to 30%. Beyond property value, rental income from an ADU can further boost financial returns.

Make Your ADU Project a Success

ADUs offer homeowners in Orange County an excellent opportunity to increase property value, accommodate family, and earn rental income. With Avorino's experience in ADU construction, we guide you from consultation to completion, ensuring your ADU is high-quality, compliant, and tailored to your needs.

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