Landscape & Hardscape Design for Homeowners and Contractors· Call (570) 213-6792
Our Story
About Grace Line
Design is the result of form following function — mindful of budget, built on relationships, and driven by a love of the work.
The Beginning
Founded in the Spring of 2025
Grace Line Outdoor Design LLC was created in the spring of 2025 by John W. Callahan. Having worked for 10 years as a senior project manager and designer for a premier landscape and swimming pool design and build company in New Jersey, John decided to take his knowledge and build his own design firm.
With architectural and environmental degrees, and 12 years working in civil engineering and surveying, John has a diverse background which is very beneficial dealing with towns and permitting of large scale construction projects.
"Grace Line Design LLC has a core value of maximizing a property's aesthetic and functional potential. Design should be the result of form following function, while also staying mindful of budget."
John W. Callahan
Founder & Principal Designer
Built On Experience
A Foundation in the Field
Senior Project Manager & Designer
Landscape & swimming pool design and build
Civil Engineering & Surveying
Architectural & environmental degrees
Town & Municipal Expertise
Large-scale construction project approvals
What We Believe
Our Core Values
Maximize Potential
Every property has an aesthetic and functional ceiling. Our job is to reach it.
Form Follows Function
Design should be the result of form following function, while staying mindful of budget.
Relationships First
Passion and drive come from a love of working with homeowners and contractors.
Every Job Is a Journey
Every project is a story that culminates as a result of teamwork and Grace.
"Every job is a journey and a story, which culminates as a result of teamwork and Grace."
— John W. Callahan, Founder
Let's Plan
Your Project.
Tell us about your property or project. We'll follow up to talk through your goals.
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