An Accessory Dwelling Unit (ADU) is a secondary residential dwelling located on the same property as an existing home. ADUs can be used for family members, guests, rental income, home offices, or independent living.
Common types of ADUs include:
California has adopted laws encouraging ADU construction, but every property must still satisfy local development standards.
Several factors influence what can be built on your property.
Your property's zoning establishes the basic development rules. While California law generally permits ADUs on residentially zoned lots, zoning still affects issues such as setbacks, building height, and allowable development.
Larger lots often provide more flexibility, but even smaller properties may qualify for an ADU under California law.
Lot dimensions, irregular shapes, and existing improvements all influence placement options.
The location of your existing home, garage, pool, sheds, and other structures affects where an ADU may fit.
Sometimes relocating or removing an existing structure creates significantly better development opportunities.
Local setback requirements determine how close a structure may be built to property lines.
Although California law provides certain ADU setback allowances, every property should be evaluated individually.
Utility easements, drainage easements, access easements, and other recorded restrictions may limit where construction can occur.
Many homeowners are unaware these exist until the design process begins.
Water, sewer, electrical service, and gas infrastructure all influence project cost and feasibility.
Understanding utility requirements early helps avoid unexpected expenses later.
In many situations, yes.
Depending on your property's characteristics and local regulations, you may qualify for:
The available options vary depending on your existing property and applicable regulations.
Many homeowners make expensive decisions before fully understanding their property's development potential.
Common mistakes include:
Starting with a property-specific evaluation helps avoid these costly surprises.
Two homes on the same street can have completely different development opportunities.
Factors such as lot dimensions, utility locations, easements, existing structures, topography, and local regulations all contribute to what's possible.
That's why online calculators and general articles can only provide part of the answer.
A professional property analysis evaluates your specific site—not averages or assumptions.
The most successful ADU projects begin with understanding what's possible before investing in design, engineering, or permits.
At Pacific Infill Development, our Property Analysis evaluates your property's development potential and identifies opportunities and constraints before you spend money on plans.
Whether you're considering a detached ADU, garage conversion, or exploring other infill possibilities, starting with the right information can save both time and money.
If you're considering an ADU and want clear answers about your property's development potential, Pacific Infill Development can help.
Our Property Analysis includes:
Start your Property Analysis today and discover what's possible on your property.
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