Can I Build Second Story Addition in Sacramento, CA? (2026)
Find out if you can build a second story addition in Sacramento, CA. Rules, permit requirements, costs, and next steps.
Adding a second story in Sacramento, CA is possible in most zones, subject to height limits and structural permit requirements.
A second story addition is one of the most complex home improvement projects in Sacramento, CA. It requires a full building permit, structural engineering review, and must comply with the height limits for your zoning district. Unlike a ground-floor addition, a second story changes the roofline and structural load path of your entire home, triggering stricter engineering requirements. In Sacramento, zone height limits range from 30 feet in R-1 zones — verify your zone before planning.
Second Story Addition Rules in Sacramento
Second Story Addition Rules in Sacramento: Building permit required: Yes — all second story additions require a permit. Permit thresholds: All structural additions require permit. Example height limit (R-1): 30 feet, max 2 stories. Structural engineering drawings required. Setbacks apply to the full structure height. Sacramento CDD building permit required. Sacramento has lower construction costs and permit fees than Bay Area cities. Historic districts require additional design review. Floodplain restrictions apply near rivers.
Costs & Fees
Second story addition permit fees in Sacramento: Valuation-based — typically $1,800–$9,000+. Note: structural engineering fees ($2,000–$10,000+) are separate from permit fees.
Timeline
Plan check: 5-10 weeks plan check. Construction typically 3-6 months for a full second story.
Next Steps
Next steps for adding a second story in Sacramento: 1. Hire a structural engineer to assess your existing foundation and framing capacity. 2. Confirm your zone height limit and verify the addition meets all setback requirements. 3. Submit full structural plans and permit application to the Sacramento Community Development Department — Building Division. 4. Inspections required at foundation reinforcement, framing, shear panels, and final.
Sacramento Community Development Department — Building Division
Phone: (916) 808-8300
Website: https://www.cityofsacramento.gov/community-development/building
Online Permits: https://aca.accela.com/sacramento/
Frequently Asked Questions
Can I build an ADU in Sacramento?
Yes. California state law requires Sacramento to permit ADUs by-right on all residential lots. You can build a detached ADU up to 1,200 sqft, a garage conversion ADU, or a Junior ADU (JADU) up to 500 sqft within your existing home. No owner-occupancy requirement applies. Sacramento has lower ADU permit fees than Bay Area cities — typically $2,000–$7,500 total. Permits process within 60 days.
What are Sacramento's short-term rental (Airbnb) rules?
Sacramento requires a Short-Term Rental Permit ($200/year) for all rentals under 30 days. Your property must be your primary residence. The city's Transient Occupancy Tax (TOT) at 12% applies to all short-term rental revenue. Airbnb collects and remits TOT for qualifying hosts. Operating without a permit carries fines. Register with Sacramento Finance Department.
Does Sacramento use SMUD or PG&E for electricity?
Sacramento is served by SMUD (Sacramento Municipal Utility District), a publicly-owned electric utility — not PG&E. This matters for solar: SMUD's net metering program is generally more favorable than PG&E's NEM 3.0 program. SMUD also offers periodic solar incentive programs and rebates. Solar permit coordination goes through Sacramento CDD, but interconnection is with SMUD.
What zoning covers single-family homes in Sacramento?
Sacramento's primary single-family zones are R-1, R-1A, and R-1B. R-1 requires standard setbacks (20 ft front, 5 ft sides, 15 ft rear). R-1A allows smaller lots with reduced setbacks (15 ft front, 3 ft sides). R-1B is the most urban infill-friendly single-family zone (10 ft front, 3 ft sides). All three allow one ADU plus one JADU per state law.
Is Sacramento a flood risk area?
Parts of Sacramento have significant flood risk due to its location at the confluence of the American and Sacramento Rivers. The Natomas Basin (north of downtown) historically had 100-year flood risk and has been upgraded to 200-year protection. Portions of Sacramento near both rivers remain in FEMA Special Flood Hazard Areas. Check FEMA's Flood Map Service Center (msc.fema.gov) for your specific parcel's flood zone designation before purchasing or building.
Do I need a permit to run a home business in Sacramento?
Yes. A Home Occupation Permit ($125) is required in Sacramento for any business operated from a residence. Restrictions apply: no clients on-site, no non-resident employees, no exterior signs. Business use must be incidental to residential use. Sacramento City Code Section 17.228.200 governs home occupations.
Are solar panels required on new homes in Sacramento?
Yes. California's Title 24 Energy Code requires solar PV on all new low-rise residential construction. Sacramento's extreme summer heat (regularly above 100°F) makes solar especially cost-effective. SMUD's favorable net metering program enhances solar economics. Sacramento has 265+ sunny days per year. New construction solar systems must meet Title 24 minimum sizing requirements.
Source: Sacramento Community Development Department — Building Division — Building Regulations. Last verified April 5, 2026. View source