ADU Plans and Permits

  • 28 years of experience
  • Our main focus is ADUs
  • We do about 25-30 ADUs per month
  • Familiar with most building departments in California
  • Plans expedited within 48 hours (normal turn around 1 week)
  • Permits within 4 weeks (garage conversion); 7 weeks for New Construction

START HERE:  Contact Form  |  Email  |  Call 310-770-0392

About ADU’s

ADU stands for “Accessory Dwelling Unit”.  They are often referred to as in-law units, back houses, granny-flats, etc. ADU’s can be either attached or detached from the main house.  An ADU always includes a kitchen, bathroom and living area.


As per SB 1069 and AB 2299, the max size of an ADU is 1,200 sq ft if detached, and 50% if attached to the existing home.  The ADU must also comply with maximum lot coverage regulations.  45% is standard; however, most local codes allow up to 50%.  If that’s still not enough, SKSI may apply for a variance on your behalf.

ADU Inquiry

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SKSI Services for ADUs

Plans & Permits

Customized for your property and your needs / wants


Your ADU may lower your existing monthly payments with zero out of your pocket


From start to completion


Maybe its time to upgrade your main home


Creative ideas to enhance your quality of living and enjoyment of your property

Structural Engineering and Energy Calculations (Title 24)

Included in our standard ADU Agreement

Accessory Dwelling Unit Memorandum

TheCalifornialegislature found and declared that, among other things, allowing accessory dwelling units (ADUs) in single family and multifamily zones provides additional rental housing and are an essential component in addressing housing needs inCalifornia.

Full booklet:

AB (Assembly Bill) No. 2299, Chapter 735, an Act to amend Section 65852.2, Approved Sept 27, 2016

This bill would replace the term “second unit” with “accessory dwelling unit.”

The Planning and Zoning Law authorizes the legislative body of a city or county to regulate, among other things, the intensity of land use, and also authorizes a local agency to provide by ordinance for the creation of 2nd units in single-family and multifamily residential zones, as specified. Existing law authorizes the ordinance to designate areas within the jurisdiction of the local agency where 2nd units may be permitted, to impose specified standards on 2nd units, and to provide that 2nd units do not exceed allowable density and are a residential use, as specified.

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