Investment Property Loans in San Diego, CA

San Diego caps Tier 3 whole-home licenses at 1% of housing units outside Mission Beach; on October 9, 2026 the city reported 4,859 issued and 802 still available.

For investors: Those 802 open slots are the whole runway for new unhosted guest rentals across the rest of the city. Secure a license, or confirm one can still be had, before paying a price that assumes nightly income, because the count only shrinks as hosts apply.

Source: City of San Diego Office of the City Treasurer, Short-Term Residential Occupancy, Oct 2026

Mission Beach whole-home licenses (Tier 4) are capped at 30% of that planning area's units; all 1,099 were issued as of October 9, 2026, and the Tier 4 waitlist application period is closed.

For investors: A Mission Beach cottage bought today cannot even join a waitlist, so its realistic plan is monthly or seasonal tenants. Value it on that rent, and treat a seller's nightly booking history as income the next owner cannot inherit.

Source: City of San Diego Office of the City Treasurer, Short-Term Residential Occupancy, Oct 2026

A Tier 3 or Tier 4 license costs a $41 application fee plus a $1,129 license fee, runs two years, and requires two-night minimum stays, 90 or more rented days yearly and quarterly reports.

For investors: Budget about $1,170 every two years for the license itself. Quarterly reports showing fewer than 90 rented days put it at risk of revocation, and the ordinance allows no exception for cancellations, so a mostly empty second home is a poor fit.

Source: City of San Diego Office of the City Treasurer, Short-Term Residential Occupancy, Oct 2026

Each San Diego host may hold only one short-term rental license and operate one dwelling at a time, and licenses cannot move to a new owner or a different unit.

For investors: Buying a home that already hosts guests does not carry its license through escrow; the buyer applies fresh, subject to the Tier 3 count. An investor also cannot stack several whole-home rentals under one host name in this city.

Source: City of San Diego Office of the City Treasurer, Short-Term Residential Occupancy, Oct 2026

Since May 1, 2025, Measure C sets San Diego's transient occupancy tax at 11.75%, 12.75% or 13.75% of rent for stays under one month, depending on the property's city tax zone.

For investors: Check the address on the Treasurer's tax zone lookup map before modeling net nightly revenue, since zones differ by two full points of gross rent. Returns are monthly and due by the last day of the following month, with penalties of up to 25%.

Source: City of San Diego Office of the City Treasurer, Transient Occupancy Tax, Jun 2025

San Diego's rental unit tax is $50 per parcel plus $5 per unit for a house, condo or 2 to 10 unit building, and $57 plus $9 per unit for 11 to 100 units.

For investors: A fourplex owes about $70 a year, trivial next to the late penalty of $25 or 10%, whichever is greater, plus 1% a month. Bills can reach back three years, each with its own late fee, so open the account right after closing.

Source: City of San Diego Office of the City Treasurer, Rental Unit Business Tax Fees, Oct 2026

San Diego bills its rental unit tax by calendar year, does not prorate it, and generally collects it by March 1; a new owner's bill is due 30 days after mailing.

For investors: Because the tax is flat and never prorated, a rental bought late in the year can still bring a full bill, with the next one in January. Bills go to owners without a homeowners' exemption, and a refinance or trust transfer can trigger a duplicate statement.

Source: City of San Diego Office of the City Treasurer, Rental Unit Business Tax FAQ, Oct 2026

San Diego's Tenant Protection Ordinance requires just cause once a covered tenancy passes 30 days, and a no-fault ending owes two months' rent, or three for seniors or disabled tenants.

For investors: Coverage starts far sooner than the state's 12 months. Housing with a certificate of occupancy under 15 years old is exempt, as is a separately sellable house or condo not owned by a corporation or REIT, once the lease carries the city's exemption notice.

Source: San Diego Municipal Code Chapter 9, Article 8, Division 7, Residential Tenant Protections, Mar 2024

Since August 22, 2025, outside the Coastal Zone, San Diego's ADU Home Density Bonus caps single-family lots at 4, 5 or 6 ADUs by size and is barred in eight RS-1 zones outside high-opportunity areas.

For investors: Underwrite a backyard ADU project against the new caps: a lot of 8,000 square feet or less supports four ADUs in total, state-law units included. Bonus units outside a Transit Priority Area need a parking space each, and every bonus unit needs fire sprinklers.

Source: City of San Diego Development Services, Regulatory Updates (2025 ADU and JADU Amendments), Aug 2025

San Diego charges a Solid Waste Management Fee for city trash pickup, to be collected on the county property tax roll; the 95-gallon bundle costs $44.57 a month from July 1, 2026.

For investors: For a rental that receives city collection, that is about $535 a year on the owner's tax bill rather than the tenant's. The adopted schedule falls to $38.75 a month from July 1, 2027, so a lower figure is fair for later years of a pro forma.

Source: City of San Diego Environmental Services, Trash Service Fee Calculator, Oct 2026

In San Diego's Very High Fire Hazard Severity Zones, owners must manage brush 100 feet out from structures across three zones, and Zone 0 rules apply to new buildings there after February 28, 2026.

For investors: A canyon-rim rental carries real upkeep: Zone 1 needs regular trimming and half of Zone 2 must be thinned. Next to protected habitat, clearing between February 15 and August 15 requires an owner-paid biologist survey, so schedule crews in the fall.

Source: San Diego Fire-Rescue Department, Guide to Defensible Space: Property Owners, Oct 2026

San Diego entered FEMA's Community Rating System on October 1, 2023 at Class 7, which trims flood insurance premiums on NFIP policies inside city limits by 15%.

For investors: When a San Diego rental sits in a mapped flood hazard area, ask for an NFIP quote that already shows the Class 7 credit and compare it with private cover. Premium figures a seller quotes from before late 2023 would not include this discount.

Source: FEMA, CRS Eligible Communities list (effective October 1, 2026), Oct 2026

UC San Diego, the largest employer headquartered in San Diego County, reported 40,626 academic, staff and medical center employees as of June 2026 and 45,087 students in fall 2026.

For investors: A campus and health system of this size keeps demand steady for rooms, condos and small multifamily within commuting range of La Jolla. Student leases cluster around the academic year, so plan a summer turnover and a September lease-up when underwriting near campus.

Source: UC San Diego, Campus Profile, Oct 2026