

OUR SERVICES

Bespoke Construction
From dreaming to the house-warming party and everything in between. Our decades of experience and collaborative approach culminate in a white-glove experience. Building a custom home should be a fun process!

Design Services
We are happy working with an architect or a napkin sketch. We've designed dozens of floorplans in house. Depending on your needs, we can design you home ourselves or refer you to an architect that specializes in your style of choice.

Professional Networking
Utilize our vast portfolio of professional connections and partners including Banking, Brokerage, Accounting, Legal, and Architectural services. Let us help you get in touch with the right people.

ABOUT US
Sirmon Customs is a hands-on custom home builder with over 30 years of experience in creating exceptional, luxury homes. Our commitment to quality, superior communication, budget and pricing transparency, and client satisfaction sets us apart in the industry. We take pride in bringing our clients’ visions to life through our tailored approach and exacting standards.
30+
Years of Experience
50+
Custom Homes Built
100%
Client Satisfaction Rate
0
Warranty Claims
Partners

Managing Partner
Cy Sirmon
Cy brings a rare blend of finance, development, and hands-on construction experience. Formerly a commercial banker, he helped manage more than $100 million in construction projects - ranging from large multifamily developments to ski-in/ski-out townhomes and everything in between. Raised on the jobsite, he pairs institutional level underwriting and project oversight with a practical, first-hand understanding of the construction process. A proud University of Montana alumnus, Cy was named a 2019 Phile Steel First Team All-Conference Center for the Montana Grizzlies and earned the team-voted Paul Weskamp Award, recognizing the program's most valuable lineman. He operates with a disciplined focus on detail, timely communication, and tight organization - driving projects that stay on schedule, on budget, and run smoothly for every party involved.

Partner, Director of Construction
John Sirmon
John has been in the construction industry since 1996. With over 30 years of experience, he has built every part of a home from foundations and framing to finish work with his own two hands. More than a craftsman, he is vertically integrated developer - equally comfortable in the field, at the drafting table, or consulting clients to help materialize their dream home. His background spans custom home construction, bare-land development, multifamily development, and ground up residential design. His decades of experience from concept to completion afford John a comprehensive understanding of how form, function, cost, and constructability intersect. An expert in every phase of the process, John brings uncommon depth of judgment and capability to each project.
OUR PROJECTS







