Cornerstone Landscape and Design
About Cornerstone Landscape and Design
Cornerstone Landscape and Design is a full-service landscape design and construction company based in Orange County, NY that specializes in creating custom outdoor living spaces. Owner Phil Conroy personally oversees every project, ensuring high-quality work and personalized attention for clients throughout the Hudson Valley region.
Listing last verified March 2026. Information sourced from public records and Google Business data.
Landscaping Services
landscaping services offered in Harriman:
- Landscape Design
- Outdoor Kitchens
- Retaining Walls
- Steps
- Walkways
- Lawn care and maintenance programs
- Irrigation system installation
- Seasonal cleanup and mulching
Landscaping in Harriman — FAQ
How much does landscaping cost in Harriman?
Landscaping in Harriman costs $65-$130 per hour, with the average project at $4,800. Larger lots in Warwick, Chester, and Cornwall give landscapers room to work. Deer pressure is heavy across the county, so deer-resistant plantings and fencing are part of most designs.
What landscaping works best for Harriman properties?
Harriman properties average 0.25 acres, and common home styles include Ranch, Colonial, Townhouse. This small village near Harriman State Park features predominantly 1970s-1980s construction with a mix of ranches, colonials, and townhomes. Proximity to parks attracts families who invest in deck additions, bathroom updates, kitchen modernization, and exterior maintenance on homes passing the 40-year mark. Native plantings, deer-resistant gardens, and drainage solutions are popular in Orange County.
Do I need a permit for landscaping in Harriman?
Basic planting and lawn care don't require permits in Harriman. However, retaining walls over 4 feet, significant grading changes, and tree removal on certain properties may require permits from the local building department.
Before Hiring a Landscaping Pro in Harriman
Use this checklist to vet contractors before signing a contract.
Verify they carry pesticide applicator certification if doing lawn treatments
NY and CT both require certification for commercial pesticide and herbicide application. Unlicensed application is illegal and can harm your property.
Ask for a planting plan that specifies species, sizes, and spacing
A written plan with botanical names ensures you get what you paid for. Avoid contractors who cannot name the plants they are installing.
Confirm they will call 811 (Call Before You Dig) before any excavation
Hitting a gas line or fiber optic cable is dangerous and expensive. Utility marking is free and legally required.
Ask about a warranty or guarantee on plant material
Reputable landscapers offer a 1-year replacement warranty on trees and shrubs. If plants die from improper installation, they should replace them.
Verify Home Improvement Contractor license with your municipality
New York counties require Home Improvement Contractor registration. Check with your local clerk's office or building department.
Confirm general liability insurance and workers' compensation coverage
Ask for a certificate of insurance (COI) naming you as additionally insured. Workers' comp protects you if a worker is injured on your property.
Get 2-3 written estimates that itemize labor, materials, and timeline
Lump-sum quotes hide details. Itemized estimates let you compare apples to apples and catch hidden costs.
Check permit requirements with Village of Harriman Building Department ((845) 782-6892)
Contact village hall for permit requirements.
Ask for 3 recent local references and actually call them
Ask references specifically: Did the job finish on time and on budget? Were there surprises? Would you hire them again?
Verify contractor credentials: NY Division of Licensing Services
Best Time to Hire a Landscaping Pro in New York
Seasonal timing guide for the Northeast (CT/NY metro area).
Prime planting season once the ground thaws (usually late March). Book hardscaping early — the best crews fill their spring schedule by February. Spring cleanup removes winter debris.
Active maintenance season. New plantings need irrigation in summer heat. Hardscape projects (patios, walkways) are best started before July heat peaks. Lawn seeding should wait until fall.
Best time for lawn overseeding and aeration (Sep-Oct). Trees and shrubs planted in fall establish stronger root systems. Fall cleanup and leaf removal prevent lawn damage.
Dormant pruning for trees and shrubs (Jan-Feb). Use this time to plan spring projects and get landscape designs finalized. Many companies offer winter pricing for spring bookings.
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