City Index

The Modular Purchase by City — 40 Cities, One Primary Page Each

Every city in this directory carries exactly one primary buyer's page: the five crossings localized — the regime, the split, the road, the seam, the counter — measured against the published methodology, with the county and permitting facts and the state license check. Pick a state to start.

Modular Engineering in Arizona

2 cities in this run — Phoenix, Tucson. The five crossings localized, the permitting path, and the Arizona license check.

Modular Engineering in California

4 cities in this run — Los Angeles, Sacramento, San Diego, San Francisco. The five crossings localized, the permitting path, and the California license check.

Modular Engineering in Colorado

1 city in this run — Denver. The five crossings localized, the permitting path, and the Colorado license check.

Modular Engineering in District of Columbia

1 city in this run — Washington. The five crossings localized, the permitting path, and the District of Columbia license check.

Modular Engineering in Florida

4 cities in this run — Jacksonville, Miami, Orlando, Tampa. The five crossings localized, the permitting path, and the Florida license check.

Modular Engineering in Georgia

1 city in this run — Atlanta. The five crossings localized, the permitting path, and the Georgia license check.

Modular Engineering in Illinois

1 city in this run — Chicago. The five crossings localized, the permitting path, and the Illinois license check.

Modular Engineering in Indiana

1 city in this run — Indianapolis. The five crossings localized, the permitting path, and the Indiana license check.

Modular Engineering in Maryland

1 city in this run — Baltimore. The five crossings localized, the permitting path, and the Maryland license check.

Modular Engineering in Massachusetts

1 city in this run — Boston. The five crossings localized, the permitting path, and the Massachusetts license check.

Modular Engineering in Michigan

1 city in this run — Detroit. The five crossings localized, the permitting path, and the Michigan license check.

Modular Engineering in Minnesota

1 city in this run — Minneapolis. The five crossings localized, the permitting path, and the Minnesota license check.

Modular Engineering in Missouri

2 cities in this run — Kansas City, St. Louis. The five crossings localized, the permitting path, and the Missouri license check.

Modular Engineering in Nevada

1 city in this run — Las Vegas. The five crossings localized, the permitting path, and the Nevada license check.

Modular Engineering in New York

1 city in this run — New York. The five crossings localized, the permitting path, and the New York license check.

Modular Engineering in North Carolina

2 cities in this run — Charlotte, Raleigh. The five crossings localized, the permitting path, and the North Carolina license check.

Modular Engineering in Ohio

3 cities in this run — Cincinnati, Cleveland, Columbus. The five crossings localized, the permitting path, and the Ohio license check.

Modular Engineering in Oregon

1 city in this run — Portland. The five crossings localized, the permitting path, and the Oregon license check.

Modular Engineering in Pennsylvania

2 cities in this run — Philadelphia, Pittsburgh. The five crossings localized, the permitting path, and the Pennsylvania license check.

Modular Engineering in Tennessee

1 city in this run — Nashville. The five crossings localized, the permitting path, and the Tennessee license check.

Modular Engineering in Texas

5 cities in this run — Austin, Dallas, Fort Worth, Houston, San Antonio. The five crossings localized, the permitting path, and the Texas license check.

Modular Engineering in Utah

1 city in this run — Salt Lake City. The five crossings localized, the permitting path, and the Utah license check.

Modular Engineering in Virginia

1 city in this run — Richmond. The five crossings localized, the permitting path, and the Virginia license check.

Modular Engineering in Washington

1 city in this run — Seattle. The five crossings localized, the permitting path, and the Washington license check.

The Standard Behind This Page

Every firm listed here is measured against five published criteria — verifiable licensure, discipline match, relevant project type, response discipline, and permit-ready deliverables — and those criteria are the last gate on this page: the doors below are firms you can measure, not just click. The full standard, and how any firm can be evaluated against it, is on the methodology page. Sources: state board records linked from each page. Last reviewed: November 8, 2026.

Who Publishes This Directory

Published by Apex Grid Engineering PLLC. The firms evaluated and listed on this site today are the publisher's own family of brands — this is an affiliated directory, not a neutral referee. The methodology below is the standard any engineering firm can be measured against, and it is the standard we hold our own firms to in public. Presentation order on this site is the publisher's choice and an experiment in what helps buyers decide — it is not an objective quality verdict, and no firm pays for placement. Coverage claims are limited to licensure the operator's bench actually holds, stated per state. No reviews, ratings, or project claims are published for any firm unless they can be documented — this site explains how a buyer should judge a modular purchase and publishes the publisher's methodology assessments; it does not publish customer reviews, and you will find none invented here.

Operated by Apex Grid Engineering PLLC. Founder & CEO: Jeremy “Chico” Mills — serial entrepreneur and USAF veteran. Jeremy is the founder and chief executive; he is not a licensed professional engineer, and no page on this site implies otherwise. The engineering behind the listed firms is performed and sealed by their licensed PE benches.