The small developer's playbook: 2–50 units in California

Small deals die from sequencing errors, not bad sites. The developer who ties up a parcel, then discovers the fee load, then learns the zoning requires a conditional use permit, is paying carry on a timeline they never priced. This playbook orders the work: audit the site's zoning and overlays first, choose your entitlement track second, model fees and timelines third, and only then get deep into design and building codes. The state zoning law and its local implementation set the board; the state housing statutes — density bonus, SB 35/SB 423, the Housing Accountability Act — are the pieces that let a small project move through it.

The good news: California law now does a lot of work for small projects. The State Density Bonus Law applies at five units and up, ministerial paths exist in many cities, and an SB 330 preliminary application locks the rules against mid-entitlement changes. The bad news: the traps — fees, utilities, and tenant protections on occupied buildings — hit a 10-unit pro forma proportionally harder than a 200-unit one, because you have fewer units to spread them over and less balance sheet to wait them out.

Before an LOI, run the audit in zoning and entitlement audit: confirm base zoning and the maximum residential density, check overlays and hazards (overlay and hazard screening), and establish whether the city's housing element is compliant — a non-compliant city opens the builder's-remedy lever described in housing-element sites and builder's remedy. Then pick the fork. Track one: a density bonus project — still a local approval, but with mandatory extra units, concessions and waivers. Track two: ministerial approval under SB 35/SB 423 or another by-right path — no CEQA, no hearings, but objective standards and (above certain sizes) labor requirements. Track three: conventional discretionary review — rezonings, variances and CUPs (guide) — the slowest and least certain, priced accordingly.

Whatever the track, file the SB 330 preliminary application as early as the design supports it. It freezes the ordinances, policies and fee schedules in effect on filing, limits the city to five hearings, and costs little — it is the cheapest risk hedge in California entitlement.

• Underwriting watch-outs:
• Do not buy at a price that only works with a rezoning or variance you don't control — that is entitlement risk priced as if it were closed. Structure the contract with entitlement contingencies or price the downside scheme.
• Ministerial eligibility is site-specific: SB 35/SB 423 affordability tiers depend on the city's RHNA performance, and site exclusions (wetlands, hazard zones, prior tenancy) knock parcels out. Verify against the statute in the library before you underwrite the fast track.
• The density bonus's replacement-unit rule reaches back five years of rental history — a "vacant" building can still carry the obligation.

Fees are the classic small-deal killer because they are invisible in a first pro forma. Impact fees under the Mitigation Fee Act, school fees, park fees, and utility capacity and connection charges stack per unit — and cities must now publish fee schedules and provide estimates, with AB 602 requiring nexus discipline (see Mitigation Fee Act basics and fee protests and AB 602). Get the city's written fee estimate and the utility will-serve terms (utility fees and will-serve) before the contingency period ends — a transformer upgrade or a sewer capacity charge can move a small deal's returns by whole points. Check for Mello-Roos CFDs on title; special taxes ride on top of everything else.

Occupied buildings are the second trap. Demolishing or redeveloping "protected units" under the Housing Crisis Act triggers replacement and relocation obligations (guide); AB 1482 just cause and any local rent-stabilization ordinance govern how — and whether — you can recover possession; and a density-bonus project on a formerly tenanted site owes replacement units on top of its set-aside. Read title, tenancy and covenant diligence before touching anything with a rent roll.

• Underwriting watch-outs:
• Model fees per unit from the city's adopted schedule, not a rule of thumb — the spread between California jurisdictions is enormous, and school fees alone shift with project type.
• ADUs under 750 sq ft are exempt from impact fees; a small project's unit mix can be tuned around thresholds like this.
• On any building with tenants in the last five years, price replacement units, relocation payments, and the schedule risk of possession before you price the land.
• Will-serve letters are not capacity guarantees — confirm what the utility actually commits to and when charges are due.

Once the track is chosen, the statutes stack in your favor if you use them together. The Housing Accountability Act (guide) bars denial or density reduction of a code-compliant housing project except on narrow findings; the Permit Streamlining Act puts deadlines on decisions; density-bonus concessions and waivers (guide) strip out the standards that break feasibility. On the environmental side, most small infill projects can find a CEQA exemption or ministerial path — start with CEQA exemptions and the 2025 reforms rather than assuming an EIR.

Then the building code becomes the cost driver. For 3+ units you are in the CBC as an R-2 occupancy — construction type, stories and sprinkler strategy set the budget (CBC basics for R-2), and the Title 24 stack — energy, CALGreen, fire — layers on. Get a code consultant's read on type and accessibility scope before the design is priced, not after.