…your honesty and integrity as well as your desire for perfection in yourself and your trade partners make you stand head and shoulders above the rest (“good enough” isn’t good enough for you!)”
— Grannis Family | Homeowners


We are a 2nd generation family custom home building company with more than 40 years experience building new homes in Castle Rock, the Denver market and surrounding communities. We are dedicated to addressing 21st century conditions through intelligent architecture, authentic design and building practices. We consider ourselves a small-volume, boutique, luxury custom home builder. We have a true passion for building sustainable, smaller footprint, comfortable, one-of-a-kind luxury custom homes, on unique building sites, with modern features throughout the Denver and the greater Douglas County area including Castle Rock, Sedalia, Larkspur, and Parker, Colorado.

We choose projects that are fun, exciting, innovative, and incorporate great design. We understand that creative design coupled with exceptional craftsmanship comes from the heart. Without great design and craftsmanship, there is no reason for us to build.

Our Approach

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Architectural design contributes to the quality of daily life like few other human activities. Without great design, there is no reason for us to build.

Our projects reflect modern lifestyles and a desire to connect our clients to the natural environment. We make extensive use of windows to maximize views and to provide a warm light filled modern space. We strive for simplicity in our custom homes with an emphasis on texture and natural materials.


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Without great craftsmanship, there is no reason for us to build. As Abraham Lincoln said "Whatever you are, be a good one."

Craftsmanship is the quality that comes from building with passion, care, and attention to detail. It is a quality that is honed, refined, and practiced over the course of a career. Craftsmanship is a precise skill in a particular craft.


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It is not enough to simply rely on great design and craftsmanship. It is imperative that we build homes responsibly. This means a commitment to environmentally friendly products and the efficient use of resources.

In addition to our own high minimum standards, we have resourced a variety of optional products and features to suit specific client needs while working to ensure we create designs that are authentic and sustainable. To accommodate our off-grid luxury custom home clients, we have built both geo-thermal and solar energy homes.

Management Team

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David is an experienced, professional, construction executive with 40+ years remodeling and building new homes in the Denver market.

In 1971 David graduated from the University of New Mexico, and a year later he and his wife Pam moved to Colorado. In 1978, he began his construction career with Medema Homes. Since then, he has owned semi-custom and custom home building companies and is responsible for constructing over 400 homes in the Denver market. In 2006, David and his son Brian started Stone Aspen Signature Builders, a successful custom home building company.

“Stone Aspen built us the highest quality home at an extremely competitive price . David Putnam pays attention to the smallest details and is not satisfied until the client is.
— Spieker Family, Homeowners

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Land & Development
Project Manager

Brian is an experienced, innovative, realty, design & construction professional that has surrounded himself with exceptional talent in various fields.

A native to Colorado and raised in the Denver area, Brian grew up on residential construction sites, playing on lumber piles and sweeping new homes for allowance. After graduating from the University of Maryland with an Accounting degree, Brian moved back to Colorado to join the family business.

Brian is a listener and strategic thinker. He has assembled a team of experienced, dedicated, and reliable professionals that are ready to take on a wide-variety of projects for Stone Aspen clients.

David & Brian are great to work with. They worked within our budget and delivered above our expectations!
— The Coronado Family, Homeowner

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Pam is an experienced finance, office management and client service professional.

Pam was born and raised in Albuquerque, New Mexico. In 1972, she moved with her husband, David, to Colorado where they raised their two sons in Southeast Aurora. For close to 30 years, Pam worked in Samsonite’s Finance Department. After Samsonite moved to the east coast, Pam joined the family construction business. She is now Stone Aspen’s Office Manager, Client Liaison, and runs the accounting department.