Main Contact

(720) 735-7125

Moranda Evans


(303) 223-3574

Tanya Nascimento

Education Director

(303) 225-9149

Yo hablo español.

Ray Kline

Student Services

InterNACHI Headquarters and House of Horrors®:

InterNACHI® Headquarters, which houses the House of Horrors®, is located at 4635 Nautilus Court S in Boulder, Colorado (80301), about 50 minutes from Denver International Airport. Click here for the Google map.

InterNACHI Headquarters Office is open from 9:00 a.m. to 4:00 p.m., Monday through Friday. The office is closed for the following holidays: New Year’s Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving, Christmas Eve, Christmas Day, and New Year’s Eve. All of the online courses, online certificate programs, and online membership benefits are available to member 24 hours a day, seven days a week. Members-Only Services are always available to members of InterNACHI.


The Florida InterNACHI House of Horrors® is located at PRO-LAB® Headquarters at 1675 N. Commerce Pkwy. in Weston, Florida (33326), about 45 minutes from the Miami International Airport. Click here for the Google map.

Phone & Communications Department

If you have already emailed and need to call, you can reach InterNACHI headquarters at:
InterNACHI Headquarters
(303) 223-0861

Lisa Endza 
Membership Director

Please note that, while we are happy to answer any tech support question you have, we cannot teach basic computer skills, such as how to copy/paste and or how to use your web browser. Because many of InterNACHI's services are provided via the Web, basic computer knowledge is a requirement for many of them. If you are not comfortable using a computer, we highly recommend that you take a class at your local community college or purchase an introductory book before calling for tech support.
Jazmin Swenson
Membership Services