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No. 199 · ENR Top 400 Contractors 2026

Oltmans Construction Co.

Oltmans Construction Co., listed in Whittier, California, ranks No. 199 on the 2026 ENR Top 400 Contractors list.

Who is Oltmans Construction Co.?

On the ENR Top 400 Contractors list for 2026, published by Engineering News-Record, it ranks No. 199.

The phone number on record is (562) 948-4242. More about the company is on its website, oltmans.com. Its website lists info@oltmans.com for general inquiries.

Oltmans Construction Co. is one of 3 construction companies we list in Whittier. Its website lists license no. 86393. Confirm it with the Contractors State License Board (CSLB) before you hire.

What does Oltmans Construction Co. say about its work?

Your trusted building partner since 1932.

In the company's own words, from oltmans.com, read October 2026.

Where is Oltmans Construction Co. located?

Oltmans Construction Co. is listed in Whittier, CA. Its street address is not on record yet.

How big is Oltmans Construction Co.?

Oltmans Construction Co. ranks No. 199 on the ENR Top 400 Contractors list for 2026. Engineering News-Record ranks the largest U.S. contractors by construction revenue.

Source: ENR Top 400 Contractors (2026), Engineering News-Record

How do I check Oltmans Construction Co.'s contractor license?

Oltmans Construction Co.'s website (oltmans.com) lists license no. 86393. We have not verified it, so look it up below.

Search the Contractors State License Board (CSLB) for Oltmans Construction Co. before you hire. We do not hold license records for individual companies. California licenses contractors statewide through the Contractors State License Board.

Check a license in California

Licensing rules checked October 2026. Requirements change, so confirm on the state site.

What other construction companies are in Whittier?

We list 3 construction companies in Whittier. Here are 2 more.

All construction companies in Whittier
FAQ

Oltmans Construction Co.: FAQs

Where is Oltmans Construction Co. located?

Oltmans Construction Co. is listed in Whittier, California. Its street address is not on record yet.

What does Oltmans Construction Co. say about its work?

On oltmans.com, Oltmans Construction Co. describes itself like this: "Your trusted building partner since 1932."

How do I contact Oltmans Construction Co.?

Call (562) 948-4242. Email info@oltmans.com. Visit oltmans.com.

How big is Oltmans Construction Co.?

Oltmans Construction Co. ranks No. 199 on the ENR Top 400 Contractors list for 2026. Engineering News-Record ranks the largest U.S. contractors by construction revenue.

Is Oltmans Construction Co. licensed?

Oltmans Construction Co.'s website lists license no. 86393. We have not verified it, so search the Contractors State License Board (CSLB) to confirm it before you hire. California licenses contractors statewide through the Contractors State License Board.

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Office locations © OpenStreetMap contributors, available under the Open Database License. Company rankings from the ENR Top 400 Contractors (2026).

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