About avenue l

We are Avenue L, a full-service Denver architecture firm.  Our principals, Kathy and Len Lingo, have many years of combined experience in commercial, municipal, public use, and educational architecture and historic preservation.

During our 30 plus years in Denver, we have steadily built a cherished clientele that relies on our expertise in a range of architectural services.  Our primary services include architectural design, master planning, construction administration, building condition assessments, feasibility assessments, architectural rehabilitation and historic preservation. A full list of our services and clients is provided within.

Employing a team approach -- as owners and principals -- we work directly with all of our clients. We strive to be thorough problem-solvers to uncover the best solutions for each architectural challenge.

If you are looking for a green building architect, a Colorado architect or an architect that specializes in historic restoration, we’d love to hear from you.

We encourage you to take a look at our projects and talk with our clients. Our joy and pride are reflected in the work that we produce and the clients that we have served.