Activity Index · State Hub

California

The Activity Index spans 8 counties in California so far — 5 industries indexed , 4 published indices so far — the rest in progress. Each published card below opens the full ranked index for that layer of the pipeline.

4indices
published for California
8counties
covered in California
1179firm listings
across live industries

Coverage in California

The index has 5 industries in California so far — 4 published indices so far, the rest in progress. Published cards link down to their industry leaf — the page that ranks for narrow, local intent.

Live index

Site Work, Paving & Drainage

404
active firms
257
active projects
5
layers ranked
Most active: Michael Baker International, Inc.
View the Site Work index →
Live index

Public-Building New Construction

375
active firms
236
active projects
5
layers ranked
Most active: C.W. Driver
View the New Construction index →
Live index

K-12 & Municipal HVAC

179
active firms
90
active projects
5
layers ranked
Most active: Westgroup Design
View the HVAC index →
Live index

Energy & Decarbonization

144
active firms
65
active projects
5
layers ranked
Most active: WSP
View the Energy index →
Live index

IT Modernization

77
active firms
48
active projects
5
layers ranked
Most active: BlueViolet Networks
Leaf page in progress
How the hub-and-spoke works. This state page is the directory — it captures broad queries like “construction activity in California” and passes link equity down to each industry leaf, the atomic page that ranks for narrow intent. The coverage matrix is the master index over every state and industry SymplSignal tracks.

The firms are public. The projects behind them aren't.

Each index is built from public involvement records. Owner, stage, timing, and the full firm roster on every project live inside SymplSignal.

Explore SymplSignal →
Aggregate SymplSignal data · California · as of September 2026. One hub of Sympl's growing state × industry activity index — see full coverage.