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Compare San Diego Houses, Condos, Townhomes and Small Multifamily

A detached house, a condominium, a townhome and a two-to-four-unit building in the City of San Diego can sit on the same street and still answer to different rules. The ownership form decides who controls the exterior, which documents a buyer must review, and what can be added later. The parcel’s community plan and overlay zones decide what the city will permit. This guide sets out how to compare those settings before you narrow a search.

Start with the parcel’s planning context

The city’s land is divided into 52 community planning areas covered by 49 community plans, which add detailed guidance beneath the General Plan. Two properties of the same type can face different expectations for nearby change depending on their plan area. On top of that, overlay zones apply by location: the Coastal Overlay Zone, the voter-enacted 30-foot coastal height limit between the ocean and Interstate 5, airport overlay zones and the city’s 2025 fire hazard map.

Record the plan area and the overlays first. They affect every ownership type, but they matter most for a house or small multifamily building where the owner controls the land.

Detached houses: the most control and the most records

A detached house gives the owner control of the lot, which is why ADU, addition and rebuild questions come up. The city’s ADU and JADU bulletin allows, in single-dwelling zones, a primary home plus one attached or detached ADU, one converted ADU and one JADU, with an optional bonus program capped by lot size and restricted in some fire zones. In the Coastal Overlay Zone, many ADUs need a Coastal Development Permit, and several recent code changes take effect there only after Coastal Commission certification.

A house also carries the full set of owner responsibilities: roof, systems, drainage, brush clearance where required, and the sewer lateral from the building to the city main.

Condominiums and townhomes: shared control, more documents

In a condominium or most townhome communities, an association controls some or all of the exterior and common areas. The Department of Real Estate’s guide Living in a California Common Interest Development advises buyers to review the CC&Rs and other governing documents before buying and notes that an association should be able to show adequate insurance, a workable budget and reserves. Those documents, not the listing, determine pet, rental and alteration rules.

The difference between a condominium and a townhome is a legal one, not a style. A townhome may be a separate lot with an association, or a condominium unit that happens to have no one above or below. Ask for the recorded subdivision map or condominium plan to see what is actually owned. The condo and townhome cost guide lists the documents to request.

Small multifamily: income property under city tenant rules

A duplex, triplex or fourplex adds tenant law to the comparison. The city’s Tenant Protection Ordinance, effective June 24, 2023, applies from the start of a tenancy except fixed-term leases of three months or less, and requires relocation assistance of two months’ rent for no-fault terminations, or three months for seniors and tenants with disabilities. State law applies as well; see our AB 1482 guide.

Short-term rental income is a separate question. City STRO licenses are issued to a host, are not transferable between hosts or properties, and whole-home tiers are capped. ADUs generally cannot be used for STRO. Treat any short-term rental figures in a listing as the seller’s history, not something a buyer acquires.

Comparison grid for San Diego housing settings

Setting What to request What it establishes What it does not establish Next step
Detached house Permit history, zoning and overlay lookup, sewer lateral video What has been permitted and which rules apply to the lot That an ADU or addition will be approved Review the city ADU bulletin and confirm overlays for the parcel
Condominium CC&Rs, bylaws, rules, budget, reserve information, insurance summary Association obligations and rules for the unit The condition of building components not inspected Have the documents reviewed during the contingency period
Townhome Recorded map or condominium plan, plus association documents Whether you own land, airspace or both That the exterior is the owner’s to change Confirm maintenance responsibilities in the CC&Rs
Duplex to fourplex Rent roll, leases, notices, permit records for each unit Current tenancies and permitted unit count That rents can be raised or tenancies ended freely Review city and state tenant rules before closing
Any setting near the coast Coastal Zone and height limit check Whether a Coastal Development Permit and the 30-foot limit apply What the Coastal Commission would approve for future work Ask city staff before relying on expansion plans

Decide first which form of ownership fits how you plan to use the property, then apply the parcel checks. If you want room to add a unit, a detached lot outside the Coastal Zone and outside Very High fire zones keeps more options open, though it still needs a permit. If you want less exterior maintenance, focus on condominiums and review association finances carefully. If income matters, price in the tenant rules and the fact that STRO licenses do not transfer.

Once you have a short list, compare only like with like. The comparable sales guide explains why a condominium sale is not a reference point for a house, even in the same plan area. Our buyer services describe how we organize the review.

Official sources checked October 31, 2026: City of San Diego community plans; Coastal Height Limitation Overlay Zone technical bulletin; City airport land use planning; Fire hazard severity zone map update notice; ADU and JADU Information Bulletin 400; Sewer laterals: street or alley; DRE: Living in a California Common Interest Development; Tenant Protection Ordinance; Short-term residential occupancy licensing. This guide organizes evidence for a property decision; it is not legal, tax, insurance or engineering advice, an appraisal or a determination for a particular parcel.

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