Who We Are

Chicago Roof Deck & Garden is a full service outdoor design/build firm. Our innovative outdoor living designs focus on comfort and functionality, while utilizing complementary materials appropriate to the budget and location.

What makes us unique to deck builders, general contractors or landscapers is our diverse staff and turnkey approach to jobs both large and small. From our design staff to our crew of over 60 tradesmen, Chicago Roof Deck has the team to design and execute any outdoor space. While each project is unique in location, scope, and program we remain true to our overall goal of bringing the interior to the exterior. Beginning with steel studs to the final details of furniture and annual pots our approach is truly soup to nuts and why we are the experts when it comes to outdoor living designs and construction.

  • Tom Bartosiewicz
    Tom Bartosiewicz

    Construction, Principal

    From building custom homes in the north shore to roof decks in Chicago, Tom anchors the construction crew with his background in engineering. His diverse knowledge allows the team to bring even the most challenging projects to life.

    Fun Fact: Tom speaks 7 languages!
    Favorite Place: Grilling and spending time with family
    Interests: schnitzel & pierogies

  • Darren Flynn

    Managing Principal

    Darren is

    Fun Fact
    Favorite Place

  • Jake Gazlay
    Jake Gazlay


    Jake earned a Bachelor of Landscape Architecture from Iowa State University. He brings industry experience from high-end residential landscape design/build in Chicago’s north shore. As a designer, Jake’s interests lie in sustainability, social urban outdoor spaces, and creating designs specific to the client vision and needs.

    Fun Fact: Jake is a triplet!
    Favorite Place: Door County, Wisconsin
    Interests: water polo, fall football season, road trips & comfy hoodies

  • Tim Jung


    Tim graduated from The University of Illinois at Urbana-Champaign in 2011 with a Bachelors degree in Landscape Architecture, and has since dabbled in several industries including retail design, event design, and of course landscape design where he has been able to apply both his design experience and rendering skills.  Tim is the Social Media & Marketing force behind Chicago Roof Deck & Garden and he loves sharing all of the exciting projects that the team is consistently bringing to life.

    Fun Fact: Tim has run 5 Chicago Marathons (and counting)
    Favorite Place: South shore of Kauai, HI
    Interests: Running, Biking, Swimming, Traveling

  • Kassie Kosac
    Kassie Kosac


    Kassie graduated from The University of Illinois at Urbana-Champaign in 2011 with a Degree in Landscape Architecture.  Kassie has a keen eye for the finer details and enjoys working closely with her clients to produce something that they are able to truly enjoy each and every day.  Kassie's ability to manage projects from start to finish ensures a successsful outcome and a happy clientele.

    Fun Fact: Kassie has been to 7 OAR concerts in her life
    Favorite Place: Family's Cottage in Wisconsin, especially during the fall
    Interests: Dark Chocolate, Wine, and Plants

  • Adam R. Miller
    Adam R. Miller

    Design, Principal

    In 2014, Adam R. Miller, RLA was promoted to Principal, bringing with him ten years of experience as a landscape architect. A University of Georgia BLA graduate, his work includes the design and execution of over 100 private, residential, and commercial outdoor spaces. Adam's designs can be seen in both regional and national publications that embrace his thoughtful design approach and progressive use of building materials.

    Fun Fact: Adam is a chili connoisseur
    Favorite Place: His living room couch with four TVs playing football surrounded by his family and a pot of chili on the stove
    Interests: Fantasy football, creating new business ideas, cooking

  • Erik Pederson
    Erik Pederson

    Landscape Architect/Project Coordinator

    Erik graduated from Michigan State University with a Degree in Landscape Architecture.  He really enjoys working out design details and solutions with our skilled tradesman and seeing the jobs come together out in the field.

    Fun Fact: Erik grew up playing in many bands, and has had music featured on some TV shows and motion pictures.
    Favorite Place: Enjoys traveling out west as well as heading up to Northern Michigan for a nice nature getaway
    Interests: Old Houses, Hiking & Mtn. Biking, Auto Enthusiast, hanging out with my wife and wiener dog. and eating... a lot

  • Ally Pixler


    Ally is a recent graduate from the University of Georgia Landscape Architecture program.  After a summer workinig as a Design Intern for CRD in 2015, she is now a full-time part of the Design team.

    Fun Fact: Ally played competitive ultimate frisbee with the UGA Women's team while in College.
    Favorite Place: San Luis, Costa Rica (where she studied abroad)
    Interests: Green Design, Coffee, & Watercoloring

  • Vanessa Slivinski
    Vanessa Slivinski


    Vanessa is a Chicago native, earning a Bachelor of Landscape Architecture from The University of Illinois at Urbana-Champaign.  Her patient approach to design and detail oriented style are what make her a great partner for any project.  Vanessa brings meticulous projecrt management skills and industry experience in high-end landscape design/build projects.

    Fun Fact: Vanessa practices yoga daily
    Favorite Place: Riding around on her CRD+G Scooter
    Interests: Yoga, Scarves, Healthy Food