Multifamily and Duplex Properties for Sale in Solana Beach: Zoning and Rent Rules

What multifamily in Solana Beach looks like

Solana Beach is small and mostly built out. Its income property is mainly duplexes, small apartment buildings and condo complexes west of Interstate 5, plus apartments over shops on Cedros Avenue and Highway 101. Larger new projects are rare, and when they happen they are usually mixed use on commercial land. Most buyers here are acquiring an existing 2-to-10-unit building. See financing 2-4 unit properties and apartment building loans.

Where the zoning allows it

Chapter 17.20 sets the residential zones. The use matrix in Chapter 17.12 permits duplexes and multifamily dwellings in MR, MHR and HR.

Mobilehome parks need a City Council conditional use permit in MR, MHR and HR. The Scaled Residential Overlay adds tiered floor-area limits in parts of the LR, LMR and MR zones west of I-5, so check it before planning an addition.

ADUs. Section 17.20.040(D) allows ADUs and JADUs in every residential zone, and they do not count toward density. Detached ADUs are generally capped at 16 feet, or 18 feet near transit or on multifamily sites. Rentals must run at least 30 days. See our ADU investment guide.

Two-unit developments. Section 17.20.040(R) allows ministerial two-unit projects in ER-1, ER-2, LR and LMR. Units are capped at 825 square feet and 16 feet. A parcel can have up to four units in total if it was not created by an urban lot split, or two if it was. Projects that are not lot splits need a recorded owner-occupancy covenant. Sites with rent-restricted housing, or housing that tenants occupied in the past three years, are excluded. Our SB 9 lot split guide explains the state framework.

Inclusionary housing. Chapter 17.70 requires 15% of units in rental or for-sale projects of five or more units to be affordable to very low or low income households for 99 years. In-lieu fees are allowed only with Council findings.

Rent rules: state law only

The Attorney General’s rent cap page lists no San Diego County city with a local rent cap, and we found no Solana Beach rent stabilization or local just cause ordinance in the city code. Covered units follow the Tenant Protection Act. The San Diego Area limit is 8.8% for increases from August 1, 2025, and 8.2% for increases from August 1, 2026 through July 31, 2027. Single-family homes and condos owned by individuals can be exempt with the right lease notice, and an owner-occupied duplex is exempt. See our AB 1482 guide and just cause eviction guide.

Solana Beach rental property rules

Seven-day minimum. Chapter 4.47 prohibits rentals of under seven consecutive days in every residential zone, including duplexes and apartment buildings. Stays of 7 to 30 days need an annual short-term vacation rental permit, which doubles as the business certificate. The permit must be posted inside the main door, and the owner must post a 24-hour complaint number and answer complaints within 24 hours. Fines run $500 for a first violation and $1,000 for a second, and a third within 12 months can lead to a one-year revocation. Stays of 30 days or less are also subject to the city’s 13% transient occupancy tax.

Condo conversions. Converting apartments to condos requires a City Council permit under Chapter 17.69. It cannot be approved unless the citywide vacancy rate test in the General Plan is met. Tenants get 180 days’ notice and an exclusive right to buy, plus one month’s rent in relocation help. Projects of 10 or more units must reserve 10% as affordable.

Transfer tax. The city’s $0.275-per-$500 share is credited against the county tax under San Diego County Section 22.309. The combined standard rate is $0.55 per $500 of taxable value, subject to exemptions and the recorded transaction. Confirm the calculation with escrow.

Coastal bluffs, views and older buildings

All of Solana Beach is in the Coastal Zone. The city’s shoreline management page shows that bluff-top rules were revised in the 2013 Land Use Plan amendment and that new seawalls carry a $1,000 per linear foot deposit. For an oceanfront building, the bluff and any shoreline protection device are central underwriting issues. Under Chapter 17.63, any addition above 16 feet triggers view assessment with story poles and possible committee review, so plan on that before counting on a second-story unit. Many local buildings are older wood frame. Budget SB 721 balcony inspections for buildings of three or more units, and consider an engineer’s review for a seismic retrofit, though we found no mandatory city soft-story program.

Underwriting a Solana Beach multifamily purchase

1. Confirm the zone (MR, MHR, HR or commercial mixed use) and any Scaled Residential, Scenic or Floodplain overlay.
2. Check the legal unit count against permits, and whether any unit is an ADU with a 30-day minimum.
3. Classify units under AB 1482 and model increases at or below 8.2%.
4. If the seller has run stays of 7 to 30 days, confirm the permit and TOT history, and drop any under-7-day income.
5. Collect leases, the rent roll and two years of statements, and get estoppel certificates.
6. For bluff-top or oceanfront buildings, get geotechnical and coastal permit history, then rebuild the numbers in our rental property analysis.

Questions people ask

Sources & notes

1. Solana Beach Municipal Code Chapter 17.20, Residential Zones
2. Chapter 17.12, Use Regulations Matrix
3. Chapter 17.69, Condominium Conversion
4. Chapter 17.70, Affordable Housing
5. Chapter 17.63, View Assessment
6. Chapter 4.47, Short-Term Vacation Rental Permit
7. Chapter 3.28, Real Property Transfer Tax and Chapter 3.36, Transient Occupancy Tax
8. City of Solana Beach, Shoreline Management
9. California Attorney General, Rent Caps

Note: The code edition is current through Ordinance 537 (November 2023). Confirm later amendments with the City Clerk.

General information, not legal or tax advice. Last reviewed October 2026 by Matthew Martinez.

Related: Solana Beach real estate guide · Commercial real estate in Solana Beach · Multifamily investing guide · Investor services