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Business Details
25 Years
experience
Premium Landscape Design Experts in Mahwah, NJ
Founded in 2001, Riverstone Design Studio is a landscape architecture firm led by principal designer Andrew S. Kosits. Our expertise lies in transforming outdoor spaces through customized 3D modeling, strategic site analysis, and hands-on project management. We work closely with clients to understand their vision, budget, and functional needs while addressing site-specific challenges. Our process begins with an on-site consultation followed by detailed design development and client walkthroughs. We specialize in creating sustainable, aesthetically superior landscapes that evolve beautifully over time.

With over 16 years of experience in the NY-NJ tri-state area, weve established long-term relationships through our commitment to excellence. Our team of certified professionals ensures precision in every phase from concept to execution. We collaborate with top contractors to maintain design integrity during construction phases. Annual maintenance services help preserve the longevity of our installations. Recognized by industry associations for design excellence, we continue to deliver innovative outdoor solutions tailored to individual lifestyles.
Services
Landscape Design Garden Construction Plantings Yearly Maintenance 3D Modeling
Details
  • Year established: 2001
Highlights and features
  • We offer customized 3D landscape modeling for precise visualization
  • Our team includes certified professionals with 16+ years of local experience
  • We implement sustainable design solutions that mature beautifully
  • Our process includes continuous project management through construction phases
  • We maintain long-term client relationships through seasonal landscape enhancements
Associations and certifications
  • NJLCA Excellence In Design Awards
  • NESPA Outstanding Achievement in Design Awards
What people say
Transformed our backyard Attention to detail Understanding of client vision Passion for design Stunning annual displays
Services
Landscape Design
Our 3D landscape design process begins with on-site consultation to understand client needs and site conditions. We create detailed digital models showcasing proposed elements like pools, fireplaces, and outdoor kitchens. Clients receive interactive walkthroughs before finalizing master plans, ensuring complete satisfaction with spatial functionality and aesthetic elements.
Garden Construction
We oversee complete garden installation from plant selection to hardscaping elements. Our crews implement designs while maintaining aesthetic consistency throughout the planting process. Special attention is given to plant placement, bloom cycles, and long-term maintenance requirements for optimal garden performance.
Plantings
Our planting service includes site preparation, bed redesign, and hand-selected plant material installation. We ensure proper irrigation systems and can coordinate with licensed contractors for system upgrades. Seasonal plantings provide continuous visual interest throughout the year.
Yearly Maintenance
Professional maintenance services keep landscapes thriving year-round. We provide pruning, weeding, pest monitoring, and seasonal plant replacements. Our concierge service manages ongoing landscape needs and includes holiday lighting installations for both residential and commercial properties.
3D Modeling
Advanced 3D modeling technology allows clients to visualize completed projects before construction begins. This interactive planning tool helps refine design elements and ensures spatial functionality meets client expectations for their outdoor living spaces.
People
Andrew S Kosits
Principal Designer
With over 20 years of experience, Andrew S Kosits leads Riverstone Design Studio's creative vision. His expertise in sustainable landscape architecture combines artistic sensibilities with practical functionality to create timeless outdoor spaces.
Questions
What services does Riverstone Design Studio offer?
We provide full-service landscape design, garden construction, plant installation, and ongoing maintenance programs for residential properties.
Do you work with existing landscaping contractors?
Yes, we collaborate with your current lawn care providers while handling specialized garden construction and maintenance tasks.
What areas do you serve?
We specialize in NY-NJ tri-state area projects with particular expertise in Mahwah, Wyckoff, Ridgewood, and Wayne communities.
Can you help with seasonal landscape changes?
Our yearly maintenance includes seasonal plant replacements and holiday lighting installations for continuous landscape enhancement.
How do you handle project timelines?
We create customized timelines based on your schedule and coordinate with trusted contractors to maintain project deadlines.
Do you provide 3D design visualization?
Yes, we use advanced 3D modeling to show clients their completed outdoor spaces before construction begins.