There is no simple answer here. The cost of a rooftop garden varies widely depending on factors such as size, complexity, and specific design elements.

Creating a budget for a roof garden or terrace design

The wisest way to develop a budget is to first review the range of costs. If you live in a coop or condominium and depending on the scope of your project, check your building’s Alteration Agreement to understand any limitations imposed by your building in the construction and potential improvement of your outdoor space, rooftop, terrace or balcony.

A well-designed, multi-functional rooftop or terrace garden

A typical terrace garden project is developed similarly to a construction improvement project with multiple phases and a team of highly experienced collaborators. A typical rooftop garden project involves collaboration with a structural engineer, landscape designer, and specialized contractors. In addition to the obvious…designing a functional and aesthetically beautiful space, the design process should consider factors like weight loading, wind load, privacy, and desired amenities.

Every project has unique parameters based on the specificity of the site and the aspirations of the client. The challenges can vary based upon the existing site conditions and the design intent.

Common deciding factors impacting cost of a garden

• Weight loading parameters for the terrace or roof

• Wind load and its impact on plant selection, amenities, and furniture

• Existing paving and installation needs

• Privacy requirements

• Outdoor kitchen or shade structures

• Access to the rooftop (stairs, elevator, hoist)

• Water supply for irrigation and cleaning

• Maturity of installed plantings

• Evening lighting

Each of these factors have a range of costs and can be line-itemed into an estimate when costing out the project.

Develop a design plan for your rooftop garden

A design plan provides a clear vision of your desired outdoor space, ensuring that all elements work together harmoniously. As in any type of construction, once you have a design plan, the project can be cost engineered to align with a budget. With a plan, you can streamline the design and implementation process, saving time and effort. A plan helps you estimate costs accurately, allowing you to allocate funds effectively and avoid unexpected expenses.  In some cases, a landscape plan may be required for permits or approvals. Costs for building on structure can range from $50 to $700 per square foot. Our firm have designed and built terraces and roof gardens ranging from 250 to 3000 square feet.

Collaboration and trust in designing a garden

Regardless of the scope of a project, successful rooftop garden projects rely on trust, flexibility, and open communication between the designer and client. By carefully considering these factors and working collaboratively, you can create a beautiful and functional rooftop garden that meets your needs and budget.