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Your Trusted Home Builders in Clayton, NY
Reff Development has been serving the Thousand Islands and Watertown, NY area for over 25 years as a full-service construction firm. Our owner, Mark Reff, personally oversees every project onsite, ensuring quality results delivered on time and within budget. We specialize in residential and light commercial construction, including home building, renovations, foundations, excavation, roofing, decks, garages, and custom cabinetry. Our team's extensive experience and commitment to client satisfaction have made us a trusted choice for both mainland and island projects.

We pride ourselves on understanding each client's unique needs and providing tailored solutions that enhance property value and functionality. With specialized equipment for island construction, we offer services that few local competitors can match. Our proven track record of completing projects efficiently while maintaining high standards of craftsmanship reflects our dedication to excellence in every aspect of our work.
Services
Home Building Renovations Foundations Excavation Roofing Decks Garages Custom Cabinets Island Construction Commercial Projects
Highlights and features
  • We offer 25+ years of local construction experience with owner-led project management
  • Our team provides specialized island construction services with dedicated equipment
  • We guarantee timely project completion with transparent budget management
  • We offer free initial consultations for all residential and commercial projects
  • Our comprehensive service portfolio covers all phases of construction needs
What people say
Great job Efficiently and professionally Love our new bathroom Very attractive tiling Completed efficiently
Services
Home Building
We transform architectural plans into custom homes with meticulous attention to detail. Our process begins with understanding client needs and continues through every construction phase. With over 25 years of experience, we ensure energy-efficient designs and quality materials selection. Our owner-led approach guarantees direct oversight from foundation to final finishes.
Renovations
Our renovation services enhance property value and functionality through kitchen remodels, additions, and multi-floor expansions. We specialize in creating seamless transitions between existing structures and new elements. From garage conversions to complete home makeovers, we maintain structural integrity while modernizing aesthetics. Our team handles all aspects from permits to final inspections.
Foundations
We provide expert foundation solutions using appropriate equipment for various soil conditions. Our services include excavation, concrete pouring, and waterproofing systems. Proper foundation installation prevents future structural issues while ensuring code compliance. We guarantee durable bases that support long-term building stability.
Island Work
Our specialized island construction services utilize work boats and equipment for challenging waterfront locations. We handle material transport, site preparation, and construction in remote island settings. This niche expertise serves the unique demands of Thousand Islands properties. Our team ensures safe, efficient execution of projects requiring marine-based logistics.
Custom Cabinets
We create custom cabinetry solutions that maximize kitchen functionality and resale value. Our offerings include modern designs with features like lazy susans, specialized drawers, and pantry systems. We use premium materials that withstand daily use while maintaining aesthetic appeal. Our installations transform outdated kitchens into efficient, attractive spaces.
People
Mark Reff
Owner
Mark Reff leads all projects onsite with 25+ years of construction experience. He ensures quality control while maintaining direct client communication throughout each project. His hands-on approach guarantees adherence to timelines and budgets while delivering exceptional craftsmanship.
Questions
What residential construction services do you offer?
We provide complete home building, renovations, foundations, excavation, roofing, decks, garages, and custom cabinetry services for residential properties.
Do you handle commercial construction projects?
Yes, we tackle commercial projects including workshops, office spaces, plazas, and warehouses with the same dedication to quality.
Can you work on island properties?
We're one of the few local contractors with specialized equipment and experience for construction projects in the Thousand Islands region.
How do you ensure project timelines and budgets?
Owner Mark Reff personally manages every project onsite to maintain strict control over timelines, budgets, and quality standards.
What areas do you serve?
We serve Clayton, Alexandria Bay, Cape Vincent, Chaumont, Watertown, and the entire Thousand Islands region along the St. Lawrence River.