Company Research

Fast Struct ADU in the Bay Area: modular, panelized, and HCD

Fast Struct has strong public license and factory-built signals, but homeowners still need to know whether their ADU will be modular, panelized, hybrid, or site-built.

Published August 16, 2026

This is a homeowner research profile. It is not a paid placement, review, or recommendation.

Fast Struct appeared in local Google Maps exports for San Jose and Santa Clara ADU builder searches. The exports showed Fast Struct as a modular home builder at 3395 Edward Ave, with a 5.0 rating and 12 Google reviews at the time of export.

The company's public pages describe modular, panelized, and hybrid steel construction for Bay Area homes and ADUs. Its modular landing page publishes CSLB #1147858, CA HCD #1632336, and Manufactured Home #MF1634008.

What to verify first

  • Is your ADU proposed as modular, panelized, hybrid, or conventional site-built work?
  • Which license or HCD path applies to the exact scope?
  • Who handles zoning, design, fabrication, permits, delivery, and inspection corrections?
  • What parts of foundation, utilities, crane access, and site repair are included?
  • Can Fast Struct show finished ADUs in San Jose, Santa Clara, or nearby Bay Area cities?

Why this company is worth a first screen

Fast Struct's public footprint is specific. The company describes a Santa Clara, California manufacturing facility and says it provides design, permitting, fabrication, and delivery for modular homes, ADUs, and panelized structures.

The company also distinguishes modular volumes from panelized steel assemblies. That distinction matters because the best method can change with lot access, design complexity, transport constraints, and the local permit path.

The key comparison issue

A homeowner should not compare Fast Struct only against a generic prefab unit price. The right comparison is the complete project path: design, code route, foundation, utility work, delivery or assembly, inspections, warranty, and final cost.

For tight Bay Area lots, ask whether a panelized or hybrid method is being recommended because of access constraints, design flexibility, speed, or cost.

Questions to ask Fast Struct

  • Which construction method are you recommending for my lot, and why?
  • Which license or HCD approval path applies to this exact ADU?
  • Who prepares drawings, engineering, Title 24, and local permit submittals?
  • What happens if the city asks for corrections?
  • What site work is excluded from the first price?
  • How are utilities, foundation, drainage, and crane or delivery access handled?
  • Can I see finished ADU examples and final project scopes?
  • What warranty and post-installation service is included?

Related comparison pages

Compare this profile with the Bay Area prefab ADU company guide, the prefab ADU manufacturer guide, and Bay Area ADU builder search landscape.

For Fast Struct

If you represent this prefab ADU manufacturer, send corrections, current availability, project examples, license or code-path details, profile review requests, or sponsored visibility questions through the ADU company submission page.

For broader participation details, see the builder and prefab company contact page. Paid visibility is clearly labeled and kept separate from editorial recommendation. Use the ADU advertising page for sponsorship details.

Sources

Frequently asked questions

Is Fast Struct a modular ADU company?
Fast Struct publicly describes modular homes, ADUs, panelized steel homes, and hybrid systems for Bay Area and California projects.
What license signals does Fast Struct publish?
Fast Struct's modular landing page publishes CSLB #1147858, CA HCD #1632336, and Manufactured Home #MF1634008. Homeowners should verify current status and model-specific scope before signing.
Is Fast Struct a recommendation?
No. This is a research profile based on public sources and local Google Maps export data. Verify the construction method, permit path, total cost, and site-specific responsibility.

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