- Miami Dade
- Broward
- Palm Beach
- Brevard
- Duval/St. Johns

Derek Sullivan
Derek Sullivan’s career in lighting began in 1996 where he was hired to run the outdoor lighting division for Northwest Electrical Contractors in Boise, ID. He soon realized that he had a natural talent and passion for the art of exterior lighting. In 2000 Derek decided to open his own company. By 2002 Derek’s skills had gained national attention and he relocated to Florida. Once permanently settled on Florida’s east coast, Derek opened Yard Sentry, Inc. which was later changed to Yard Sentry Landscape Lighting by Derek Sullivan, Inc.. In 2007 Derek accepted his first overseas project in London and he has continued to design and install custom projects for high profile clientele both residential and commercial in the United States, and around the world ever since.
- 20 years experience specializing in custom designed exterior lighting portraits.
- Personally designed over 10,000 residential and commercial lighting projects worldwide.
- Has actively participated in the design and field testing of the latest and greatest LED product lines in the landscape lighting industry for the past 10 years.
- Currently a consultant for lighting designers, landscape architects, electricians, manufacturers, and others both nationally and abroad.
Derek lives and breathes Lighting Design but when he is not creating outdoor inspirations for his clients he is likely enjoying his favorite hobbies- Scuba Diving and Spearfishing. Derek is a licensed Scuba Instructor as well as an AFPA accredited Master Trainer with qualifying certificates in Nutritional Counseling and Sports Conditioning. Derek is married and a proud father of four beautiful children.

Kevin Thomforde
A local to Indian Harbour Beach, FL, LEED AP accredited, and Florida GC licensed with a degree in Civil Engineering; Kevin Thomforde is a Landscape Lighting Designer for Brevard County, FL and the surrounding areas. After earning his degree at Florida Tech he pursued a career as a Project Manager for a global construction company and built schools, hospitals, hotels and condos. His extensive years of experience in Commercial Construction Management make him ideally suited to independently create lighting designs and partner closely with Landscape Architects and Contractors to have lighting designs come to life.
When Kevin started his family he had an exciting opportunity to relocate them to Satellite Beach and open the Brevard County branch for Yard Sentry Landscape Lighting. Since opening the local office in 2011, Kevin has beautified many residential homes and commercial properties with his lighting, most notably; Tropical Trail, Lansing Island, Riverside Drive, Suntree, Lake Washington and Melbourne Beach. He has established himself over the years and is well-known and trusted in the community.
When Kevin isn’t designing and installing beautiful lighting he enjoys spending time with his family, boating, going to the beach, scuba diving, running and battling it out at Trinity Fitness.

Toby Warpool
Being a native of Florida, working outdoors comes naturally for Toby. He started
his first landscape business in 1982. Creating & maintaining landscapes gave him
the opportunity to watch his masterpieces come alive. Quality control is a huge
priority for him as is evidenced by the number of years he has maintained his
client base. His reliability & and trustworthiness has kept his business thriving.
Toby’s areas of expertise include irrigation contracting, pump repair & service,
landscape lighting installation and maintenance. Toby has provided services to
areas such as Queens Harbour Golf & Country Club, Glen Kernan Country Club, Jax
Golf & Country Club, the Jacksonville Beaches & Ponte Vedra, including Sawgrass
Country Club & Marsh Landing Country Club. He is now operating the Northeast
Florida office of Yard Sentry Landscape Lighting to install & maintain LED world
class landscape lighting.
When Toby is not working outdoors, he enjoys spending time with his wife of 30
years and his three grown children, surfing, traveling, & camping.
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I felt confident from the beginning that I was going to be satisfied with the products and service you offer. Derek and his installers were professional and courteous throughout! Thanks!
- Mark Weider