Residential, Commercial, Educational and Industrial Clients
Lawn Care
Landmark Outdoor Services is committed to maintaining your property in a professional and well-groomed manner 365 days a year.
Landscape Design & Build
Landmark completely supports the design and installation of Tulsa's most beautiful landscapes. See what we can do for you.

Fertilization & Weed Control
Is your weed control out of control?
Landmark‘s licensed technicians will help you attain a healthier and greener lawn.
Tree Services
Professional arbor services provided by Landmark & our partners* helps many keep their trees and shrubs manicured and looking good all year round.
Lighting Design & Build
We offer outdoor lighting services for your property. We design and install all types so that your property is illuminated. We also install holiday lighting and remove it at the end of the season.

Water Management
Water Management is pertinent to a property's value. Landmark can completely design a Water Management solution that will solve your needs.
TESTED
PROVEN
TRUSTED
RELIABLE
STRONG
A Commitment to Quality and Service
Landmark Service Group offers the most comprehensive grounds services for residential, commercial and industrial landscapes. All of our clients needs come first and we strive to build and maintain the best relationship possible. We strive to be Green Country’s most professional grounds maintenance company by consistently achieving great quality, presenting with cleanliness, and value.
Experienced Staff - Service at Heart
Landmark’s Outdoor and Janitorial Team features 100+ highly trained, skilled, licensed and degree-ed employees. We staff only the most exceptional, professionally trained and dedicated individuals available. Our commitment to service proves, we are unmatched.
Ozone Alert Aware Business
We support the Tulsa Area Ozone Alert awarness days by running our cleanest burning and alternative fuel powered equipment. We have additional propane, E85, and natural gas powered fleets.
Cutting Edge - Green Technology
Only the latest equipment and up-to-date methods are used on every one of our job sites. In order to provide a cleaner-greener service, everyone of our fleet’s vehicles and equipment are maintained by our in-house mechanics on a regular basis. Licensed lawn application technicians on staff and regular in-service training for all employees.
Questions, Concerns or Opportunities.
We are always looking for new opportunities to support new clients with their property maintenance. Please for free to contact us by filling out our contact form. We will do our best to answer any questions you might have about our services and how we can work with you to maintain the best ground possible.

Monday 9:00 am–5:00 pm
Tuesday 9:00 am–5:00 pm
Wednesday 9:00 am–5:00 pm
Thursday 9:00 am–5:00 pm
Friday 9:00 am–5:00 pm
Saturday Closed
Landmark Service Group
10901 E 11th St. Tulsa, Oklahoma, USA 74128
Phone: 918-622-LAWN(5296)
Email: [email protected]
* We do not trim trees above a certain heigth, we use third part arbor companies.