Minimun width requirements for SFR development on vacant land (in LA County)?

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Trying to figure out the minimum width requirements for building a zone R-1 SFR on vacant land. I've read the requirements from the LA County regional planning dept (below) but can't seem to decipher the width requirements. Perhaps I'm missing something? Thank you!

Permitted Uses:

• Single family residences (22.20.070 - 22.20.100)

Minimum Required Area:

• Unless otherwise specified: 5,000 sq. ft./lot (22.52.100, 22.52.250)

Maximum Height Limit:

• 35 feet from existing or excavated grade (22.20.110) (unless modified by a special standards district such as a community standards district.)

Minimum Required Parking:

• 2 covered parking spaces per single family residence (22.52.1180)

Standard Yard Requirements:

• Front Yard: 20 feet (22.20.120), except as provided in special Standards District
• Rear Yard: 15 feet or 20% of average depth of shallow lot, but not less than 10 feet (22.20.120 and 22.48.110)
• Side Yards: Interior Lot: 5 feet or 10% of average width of narrow lot, but not less than 3 feet (22.20.120 and 22.48.100)
• Corner Lot: 5 feet except on reversed corner lot, which is 10 feet (22.20.120)

Development Standards:

• (See 22.20.105 regarding development standards for single-family residences)