Business Details
39 Years
experience
Your Trusted Landscaping Partner in Simi Valley
Since 1987, Green Horizon Landscaping has been dedicated to transforming outdoor spaces in the Conejo Valley with a commitment to quality and integrity. Founded by Glenn Thompson, who grew up on a family nursery and launched his first gardening business in 1984, our company prioritizes thorough client education and long-term value over quick fixes. We specialize in creating custom landscapes, from initial design to final installation, ensuring every project reflects our clients' visions.As a member of the California Landscape Contractors Association since 1990, we have earned multiple awards for innovative design and build projects. While transitioning into retirement, we confidently refer our clients to Swinks Creations, a trusted partner with a 35-year legacy and an A+ BBB rating, to continue delivering exceptional service.
Services
Landscaping
Custom Pools
Outdoor Living
Pool Remodel
Entire Backyard Remodel
Spa Remodel
Yard Remodel
BBQ Installations
Firepit Design
Pavers
Details
- Year established: 1987
Highlights and features
- We offer 35+ years of local landscaping expertise in the Conejo Valley
- Our team prioritizes long-term value over temporary solutions
- Award-winning designs recognized by industry associations
- Transparent communication and client education throughout projects
- Proven track record of repeat business and client referrals
Associations and certifications
- Better Business Bureau (BBB) A+ rating
What people say
Highest standard of excellence
Integrity offered
5 STAR reviews
Thorough explanations
Cost-effective solutions
Services
Landscaping
We create customized outdoor environments combining aesthetic appeal with functional design. Our team handles everything from initial concept to final installation, ensuring seamless integration of plants, hardscapes, and water features. Clients benefit from our deep local knowledge and commitment to using quality materials that withstand regional climate conditions.
Custom Pools
Specializing in bespoke pool construction tailored to property dimensions and client preferences. Our designs incorporate safety features, energy-efficient systems, and complementary decking options. Each project receives personalized attention from concept development through completion, ensuring optimal functionality and visual harmony with surrounding landscapes.
Outdoor Living
Transform backyards into functional living areas with integrated kitchens, fire features, and entertainment zones. We design cohesive spaces that extend indoor comfort to outdoor environments, using durable materials suited for California's climate. Projects emphasize seamless transitions between architectural elements and natural surroundings.
Pool Remodel
Upgrade aging pools with modern materials, energy-efficient equipment, and contemporary design elements. Our team addresses structural concerns while enhancing aesthetics through tile replacement, coping updates, and water feature additions. Remodels focus on extending pool lifespan while improving safety and visual appeal.
Entire Backyard Remodel
Comprehensive backyard transformations integrating multiple elements like patios, gardens, and water features. We coordinate complete space redesigns that optimize land use and improve property value. Projects follow a systematic approach ensuring cohesive design language across all installed components while maintaining construction quality standards.
People
Glenn Thompson
Owner and President
Founder Glenn Thompson brings 35+ years of landscaping expertise, starting with a family nursery background. He established Green Horizon Landscaping in 1987 after launching his first gardening business in 1984. A California Landscape Contractors Association member since 1990, he has received multiple design awards and built the company through client referrals.
Questions
What areas do you serve?
We serve the Conejo Valley including Thousand Oaks, Simi Valley, Westlake Village, Moorpark, and Agoura Hills.
How long have you been in business?
Green Horizon Landscaping has operated since 1987, with founder Glenn Thompson starting his first landscaping business in 1984.
Why are you referring clients to Swinks Creations?
As we transition into retirement, we recommend Swinks Creations for continued quality service. They've served our communities for 35+ years with an A+ BBB rating.
What services do you offer?
We specialize in landscaping, custom pools, outdoor living spaces, pool and spa remodeling, and complete backyard renovations.
How do you ensure quality work?
Our team follows a 'Creation to Completion' approach with thorough client education and quality material selection. We've received multiple design awards since the 1990s.
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