Long Island has no shortage of landscape companies. But there is a significant difference between a landscaping crew that mows lawns and installs plants, and a true landscape design firm that creates outdoor environments from the ground up. If you're planning a major backyard project — a pool, a patio, a full property redesign — choosing the right landscape designer is one of the most important decisions you'll make. This guide explains what to look for, what questions to ask, and what separates the best landscape designers on Long Island from the rest.
Design-Build vs. Design-Only: Which Is Right for You?
The first decision you'll face is whether to hire a design-only landscape architect or a design-build firm. Here's the difference:
Design-only firms create the plan and hand it off to you. You then hire a separate contractor to install it. This approach gives you flexibility to get competitive bids on installation, but it introduces a handoff that can lead to translation errors, cost overruns, and a final result that doesn't quite match the vision.
Design-build firms handle both the design and the installation. The same team that creates your landscape plan builds it. There's no handoff, no translation errors, and the designer can make real-time adjustments during installation when site conditions require it. For most residential projects on Long Island, a design-build firm delivers a better result at a lower total cost.
7 Things to Look for in a Long Island Landscape Designer
1. A Portfolio of Completed Local Projects
The most important thing you can evaluate is work that has already been built. Ask to see photos of completed projects — not just renderings. Look for projects similar in scale and style to what you're envisioning. A firm that has built dozens of pools and landscape installations on Long Island will have a portfolio that speaks for itself.
2. 3D Design Renderings
The best landscape designers on Long Island provide 3D renderings before any work begins. This allows you to see exactly how your property will look — plant placement, mature sizes, hardscape relationships, seasonal appearance — and make changes on paper rather than in the field. If a firm can't show you what your landscape will look like before they build it, that's a red flag.
3. Knowledge of Long Island's Climate and Plant Palette
Long Island has a specific climate (USDA Zone 7a), specific soil conditions (ranging from sandy coastal soils to heavy clay in Nassau County), and specific challenges (deer pressure, salt spray, coastal wind). The best landscape designers here know which plants thrive in these conditions and which ones fail. Ask what native plants they typically specify and how they approach deer-resistant design.
4. A Clear Design Process
A professional landscape design firm should be able to clearly explain their process from first consultation to final installation. How long does the design phase take? What does the design package include? How many revisions are included? What happens if site conditions require changes during installation? Clear answers to these questions indicate a firm that has done this many times and knows what they're doing.
5. Strong Local Reviews
Google reviews from Long Island homeowners are one of the most reliable indicators of quality. Look for firms with 30+ reviews and an average above 4.5 stars. Read the reviews carefully — look for mentions of communication, attention to detail, and how the firm handled problems when they arose. Every project has unexpected challenges; how a firm responds to them is what separates good from great.
6. Full-Service Capability
The best landscape projects on Long Island integrate multiple elements — planting, hardscape, drainage, lighting, irrigation, and sometimes pool design. A firm that can handle all of these elements in-house delivers a more cohesive result than one that subcontracts half the work. Ask whether the firm handles drainage and grading, lighting design, and irrigation planning, or whether those are subcontracted.
7. Transparent Pricing
A reputable landscape design firm will give you a clear, detailed proposal before any work begins. Be wary of firms that give vague estimates or refuse to provide a written scope of work. The best firms will walk you through every line item, explain what's included and what's not, and give you options at different price points.
Questions to Ask Before Hiring a Landscape Designer on Long Island
Red Flags to Watch For
Not every landscape company on Long Island operates at the same level. Here are warning signs that a firm may not be the right choice for a major project:
About Cardi Design & Build
Cardi Design & Build is a full-service landscape design and construction firm based in Hauppauge, NY, serving Nassau County, Suffolk County, and the Hamptons since 2016. We are a design-build firm — the same team that designs your landscape builds it. Every project includes 3D renderings, a complete plant specification, and a dedicated project manager from first consultation through final installation.
Our work spans gunite pool design, landscape design, masonry and hardscape, outdoor kitchens, sport courts, artificial turf, and organic tick and mosquito control. We have completed over 500 projects across Long Island and maintain a 4.9-star rating on Google.
Schedule a Free Landscape Design Consultation
We serve Nassau County, Suffolk County, and the Hamptons. Contact us to schedule a free site visit and design consultation.