Everything homeowners need to know about building an accessory dwelling unit in Salinas - size limits, setbacks, permits, and how the city recently rebuilt its ADU rules around California's statewide ADU law.
Last verified: August 2026
7/10 · ADU-friendly
Up to 1,200 sq ft*
Max ADU size
16 ft*
Max height
Not required
Owner-occupancy
By-right
Permit type
This page summarizes Salinas Municipal Code Chapter 37 (Zoning Code) and California's statewide ADU law (Government Code, State ADU Law, Sections 66310-66342) for general reference - it is not legal advice. Salinas recently rescinded its own outdated local ADU standards in favor of applying state law directly (see ordinance history below), and its zoning code is under broader revision. Always confirm current requirements with Salinas Community Development before designing or applying for permits. See sources below.
Zoning & size requirements
What you're allowed to build
ADU type
Max size
Max height
Notes
Detached (new build or garage conversion)
At least 850 sq ft for a studio or 1-bedroom unit, or 1,000 sq ft for a 2-bedroom unit, under the state-law floor; the city's own pre-approved plans go up to roughly 1,200 sq ft for a 3-bedroom design
16 ft
Salinas rescinded its separate local ADU development standards in early 2026 and now applies state ADU law directly - see ordinance history
Same bedroom-count-based caps, or 50% of the primary dwelling's floor area, whichever is smaller
Matches the primary structure
Common approach for above-garage or interior conversions
Junior ADU (JADU)
500 sq ft
Same as primary structure
Must be built within the existing walls of the primary home
Allowed zoning districts
Any zone where a single-family or multifamily dwelling is permitted, citywide. Salinas repealed its own separate ADU-specific zoning code section in early 2026 and now processes applications directly under state ADU law while a broader update to Zoning Code Chapter 37 continues. Confirm your parcel's zoning with Community Development.
Additional standards
Setbacks, parking & other rules
Setbacks
4 ft from side and rear property lines, applied directly from state law since Salinas no longer maintains a separate local ADU setback standard
Parking
1 space per ADU unless the project qualifies for a state-law exemption (within a half-mile of public transit, a conversion of existing space, or another listed exemption); no replacement required for demolished off-street parking
Units per lot
1 ADU + 1 JADU on a single-family lot. Multifamily lots follow state law, including up to 8 new detached ADUs under SB 1211
Owner-occupancy
Not required for ADUs, permanently eliminated statewide by AB 976 effective January 1, 2024. A JADU requires an on-site owner only if it shares sanitation facilities with the primary home
Building code
Must meet the California Residential Code as locally adopted by Salinas
Rental registration
Rented units, including a rented ADU or primary home, must comply with the city's Residential Rental Registration Ordinance
Ordinance history
How Salinas's ADU rules got here
2016Local ADU standards last updated. Salinas adopts the version of Zoning Code Section 37-50.250 that would remain its most recent ADU ordinance on file with the state for nearly a decade, even as California's ADU law changed repeatedly around it.
2017Statewide by-right ADU law takes effect. California's original ADU statute begins requiring ministerial approval of qualifying ADUs statewide, including in Salinas.
2024Owner-occupancy ban made permanent. AB 976, effective January 1, permanently prohibits California cities from requiring owner-occupancy for ADUs.
2025State flags the outdated ordinance; city moves fast. An October 8 HCD technical assistance letter notes that Salinas's ADU ordinance on file dates to 2016 and may be out of compliance with the many state law changes since. City planning staff acknowledge the ordinance has been out of step with state law since 2020, and on November 19 the Planning Commission recommends rescinding the outdated local section entirely; the City Council holds a public hearing and introduces the repeal on December 9.
2026Local ADU section repealed. The City Council's second reading on January 13 completes Zoning Code Amendment 2025-001, rescinding Section 37-50.250 and related ADU definitions so the city applies state ADU law directly while a comprehensive rewrite of Zoning Code Chapter 37 continues.
Worth knowing: Salinas sits at the center of the Salinas Valley, one of California's most acute farmworker-housing-shortage regions - a 2018 regional farmworker housing study for the Salinas and Pajaro valleys documented a shortfall of tens of thousands of housing units for agricultural workers, and the city maintains a dedicated Farmworker Housing planning program addressing it. ADUs are one part of a broader housing-affordability conversation here alongside dedicated efforts like HCD's Joe Serna Jr. Farmworker Housing Grant Program, which has funded farmworker housing projects in the surrounding area.
Permit process
How Salinas ADU permitting works
1
Pre-application check
Confirm current standards with Community Development at (831) 758-7381 before you design, since the city's ADU rules recently changed and a broader zoning rewrite is underway.
2
Choose a plan path
Consider the city's pre-approved ADU plans (one-bedroom, two-bedroom, and three-bedroom floorplans in two architectural styles) for faster review, or submit a custom design.
3
Prepare your plan set
Complete the city's New Accessory Dwelling Unit checklist: a site plan, floor plans and elevations, and existing floor plans of the primary home if you're relying on the 50%-of-primary-dwelling size option.
4
Submit your application
File through the city's Accela Citizen's Access online portal or in person at the Community Development permit counter.
5
Plan review
State law requires a decision within 60 days of a complete application.
6
Permit, build, inspect
Pull your building permit, begin construction, and schedule framing, plumbing, electrical, and final inspections.
ADUs under 750 sq ft are exempt from city impact fees entirely under state law; larger units are charged proportionately to the primary dwelling's size. Fees and timelines are approximate - confirm current figures with Community Development.
Budgeting
What it costs to build an ADU in Salinas
Garage conversion
Roughly $60,000-$170,000, the least expensive path since the shell already exists
Basement conversion
Roughly $90,000-$210,000, depending on existing ceiling height and utility access
New detached ADU
Roughly $130,000-$310,000+ for a code-compliant, fully insulated freestanding unit
Permit & impact fees
Waived entirely for units under 750 sq ft; larger units are charged proportionately to the primary dwelling's square footage - confirm exact figures with Community Development
These are general ranges from local contractor estimates and regional reporting, not quotes - actual cost depends heavily on lot conditions, finishes, and whether utilities need to be extended. Monterey County's construction labor market and coastal-adjacent building requirements can push costs above statewide averages.
Before you apply
Tips for a smooth approval
Confirm current standards before you design. Salinas rescinded its old local ADU code in early 2026 and is mid-rewrite on its broader zoning code, so double-check with Community Development that you're working from current requirements.
Look at the pre-approved plans first. One-, two-, and three-bedroom pre-approved floorplans can meaningfully cut plan-check time compared to a fully custom design.
Consider staying under 750 sq ft. That threshold skips city impact fees entirely under state law, which can meaningfully change your project's math.
Register before you rent. If you plan to rent the ADU (or the primary home), the city's Residential Rental Registration Ordinance applies - build that step into your timeline.
Complete the New ADU checklist up front. Using the city's own document checklist before you submit reduces the odds of an incomplete-application delay.
FAQ
Common questions
Do I need to live on the property to build an ADU in Salinas?
No. California's AB 976 permanently eliminated owner-occupancy requirements for ADUs statewide as of January 1, 2024, so you can build and rent out an ADU without living on site. A JADU requires an on-site owner only if it shares sanitation facilities with the primary home.
How many ADUs can I build on one lot?
On a single-family lot, 1 ADU plus 1 JADU in addition to the primary dwelling. Multifamily properties follow state law, which allows up to 8 detached ADUs on qualifying lots.
Do I need extra parking for an ADU?
Usually one space, unless your project qualifies for an exemption, such as being within a half-mile of transit or converting existing space. A demolished parking space doesn't need to be replaced.
How long does the permit process take?
State law requires a ministerial decision within 60 days of a complete application. Confirm current timelines with Community Development at (831) 758-7381.
What's the maximum size for a detached ADU in Salinas?
At least 850 sq ft for a studio or 1-bedroom unit or 1,000 sq ft for a 2-bedroom unit under the state-law floor, with a 16 ft height limit. The city's own pre-approved plans go up to roughly 1,200 sq ft for a 3-bedroom design.
How much does an ADU cost to build in Salinas?
Garage conversions tend to run roughly $60,000-$170,000, basement conversions $90,000-$210,000, and new detached units $130,000-$310,000 or more, based on local contractor estimates and regional reporting. Units under 750 sq ft skip city impact fees entirely.
Did Salinas's ADU ordinance have compliance problems?
Yes, historically. HCD's October 2025 technical assistance letter noted that Salinas's separate local ADU standards dated to 2016 and hadn't kept pace with state law. The city responded quickly, voting in January 2026 to rescind its own outdated local ADU section and apply state ADU law directly instead, while a broader zoning code update continues.
Is there a connection between ADUs and farmworker housing in Salinas?
Salinas sits in the middle of the Salinas Valley, a region with a well-documented, long-running farmworker housing shortage. ADUs are one piece of the broader housing conversation locally, alongside dedicated programs like HCD's Joe Serna Jr. Farmworker Housing Grant Program that funds farmworker-specific housing projects in the surrounding area.
