San Jose · City of San José (Santa Clara)
San Jose New Construction — Custom Homes, Infill, Teardown & Small Multifamily
San José is California's largest Silicon Valley jurisdiction. Permits run through the City's Planning, Building and Code Enforcement Department — Santa Clara County does not issue permits inside city limits. Ground-up work spans infill custom homes, teardown rebuilds, SB-9 strategies, and small multifamily on qualifying lots.
CSLB #1098432 · License & insurance details on request
Quick Answer
If you are planning a San José custom home, teardown-rebuild, duplex, or small multifamily ground-up, feasibility should answer three things first: the parcel's current zoning under San José's housing-element framework (which has been actively updated); whether SB-9 or small-lot strategies improve the program on the lot; and what demolition / utility / staging scope the existing structure or empty lot actually requires.
Who this is for
- Owners planning a San José infill custom home or teardown-rebuild.
- Owners evaluating an SB-9 or small multifamily strategy on a qualifying San José parcel.
- Buyers under contract on a teardown-candidate San José lot who want feasibility before closing.
- Architects coordinating an infill or small-multifamily delivery under one design-build contract.
Who reviews new construction in San José?
All San José ground-up work runs through the City's Planning, Building and Code Enforcement Department (PBCE) — permits, plan-check, zoning, and inspections. Santa Clara County has no role inside city limits.
San José has been active on housing-element implementation and SB-9. The current code interpretation for an SB-9 lot split, urban-lot split, or small-lot strategy on your parcel should be confirmed with PBCE during feasibility — guidance has moved.
What ground-up projects suit San José
Infill custom homes
Ground-up R-1 residences on San José lots — context-aware design, modern envelope.
Teardown rebuilds
Demolition of aging stock followed by current-code custom homes on the same parcel.
SB-9 and urban-lot splits
Two-unit-plus-split strategies on qualifying single-family parcels, subject to current San José implementation.
Small multifamily (2–6 unit)
Where zoning allows, duplex / triplex / fourplex programs on qualifying lots.
Local constraints that shape San José budgets and schedules
Zoning, FAR, lot coverage, and height vary materially by district. Confirm the parcel's current designation and any overlays before architectural concepts — the rebuild-vs-multi-unit decision turns on what the zoning actually allows.
Pre-1980 demolitions typically require an asbestos survey under Bay Area AQMD rules, with lead surveys often following. Utility disconnects, haul-off, and SCVWD / Valley Water coordination on stormwater can be real line items.
Older neighborhoods and historic overlays add design-review scope. Confirm with PBCE early.
Cost factors specific to San José
Demolition line items: asbestos / lead survey and abatement, utility disconnects, haul-off, dust control.
Infill logistics on tight residential streets — staging, hauling, neighbor coordination.
Discretionary or historic / design review where it applies can extend the schedule and require revisions.
Title 24 compliance under the 2025 Energy Code (heat pumps, ventilation, PV where applicable) is baseline.
Small-multifamily programs add fire-separation, parking, and infrastructure scope above single-family budgets.
Permit and timeline reality in San José
Realistic kickoff-to-permit envelopes for a San José ground-up are measured in many months once schematic design, demo planning, geotech where applicable, and PBCE corrections are sequenced honestly. SB-9 and small-multifamily paths can add or compress time depending on the entitlement track.
Clean, fully coordinated first submittals reduce correction cycles. PBCE's plan-check cadence is independent of Santa Clara County.
Engineering you will actually need
Soils review appropriate to the parcel; foundation design for Bay seismic context.
Structural design coordinated with current California Residential Code and San José amendments.
Drainage / stormwater per City and Valley Water requirements.
Title 24 energy compliance under the 2025 California Energy Code.
Demolition documentation: Bay Area AQMD asbestos notification where applicable.
Risks and bottlenecks unique to San José
Stale zoning assumptions
Housing-element and SB-9 implementation moved quickly. Confirm current rules in feasibility.
Undermodeled demolition scope
Asbestos / lead, utility disconnects, and haul-off are real costs. Line-item them.
Tight-lot staging
Crane work, concrete pours, and material drops require a written logistics plan.
Small-multifamily scope creep
Fire-separation, parking, and infrastructure can change the budget materially vs single-family.
Frequently asked questions
- Does Santa Clara County handle my San José permit?
- No. All San José ground-up work runs through the City's Planning, Building and Code Enforcement Department. The County has no role inside city limits.
- Can I do SB-9 in San José?
- Often yes on qualifying single-family parcels, subject to current San José implementation. Confirm with PBCE during feasibility.
- Is small multifamily realistic on my lot?
- Parcel-specific. Updated zoning and FAR drive what is buildable; feasibility should put single-family rebuild, SB-9, and small multifamily side-by-side.
- Do I need historic review?
- Sometimes. Older neighborhoods and historic overlays add design-review scope. Confirm with PBCE early.
- How tight is staging on a San José infill lot?
- Tight enough that staging, crane work, and material drops belong in feasibility, not in field improvisation.
- How long does the permit phase take?
- Realistic envelopes are measured in many months for a ground-up. SB-9 or small-multifamily paths can add or compress time depending on the entitlement track. We publish honest ranges and refine per-parcel.
- Does San Jose's liquefaction overlay change feasibility on a typical valley lot?
- Significant portions of San Jose sit within mapped liquefaction zones that drive foundation type and soils investigation scope. A short geotech screen at feasibility clarifies whether your lot needs deep foundations or a standard slab.
Official sources
- City of San José — Planning, Building & Code Enforcement ↗
City of San José
Permit, plan-check, zoning, and inspection authority inside city limits.
- Bay Area AQMD — Asbestos NESHAP / Demolition ↗
Bay Area Air Quality Management District
Pre-demolition asbestos survey and notification requirements (Bay Area).
- California Energy Commission — Building Energy Efficiency ↗
California Energy Commission
2025 Title 24 Part 6 energy code requirements.
- California Building Standards Commission ↗
California Building Standards Commission
Adopted statewide building, residential, and CalGreen codes.
- State Water Resources Control Board — Construction Stormwater ↗
State Water Resources Control Board
Construction General Permit thresholds for grading and disturbance.
Related pages
- City of San José jurisdiction context →
Why this is not Santa Clara County DPW.
- Small multifamily potential on San Jose lots →
Infill duplex/triplex feasibility.
- SB9 feasibility under City of San José rules →
Statewide SB9 under local ordinance.
- Valley-floor liquefaction and drainage review →
Soils, liquefaction, stormwater.
- San Jose cost ranges and drivers →
2026 ranges with named drivers.
- City of San José permit-path expectations →
Realistic schedule, feasibility through C of O.
Map your San Jose rebuild path with City of San Jose review screen
We start every ground-up engagement with a written preconstruction feasibility review — before any contract is signed.
Map your San Jose rebuild path with City of San Jose review screen