
Looking for expert koi ponds in Old Fort, NC? Greenspan Landscaping Co. is Western North Carolina's trusted landscaping and water feature contractor, proudly serving Old Fort and surrounding communities in McDowell County.Crystal-clear koi ponds with advanced filtration systems designed for healthy, vibrant fish. With over a decade of experience on WNC mountain properties, we deliver craftsmanship that lasts for decades.
Old Fort sits in the foothills at the base of the Blue Ridge. Steep lots, creek- and river-adjacent properties, and flood-prone low spots mean retaining walls for access and heavy drainage solutions — French drains, swales, and grade correction — are the backbone of most jobs here.
Custom koi pond design and construction
Advanced multi-stage filtration systems
Bottom drains and optimal water circulation
Fish-safe construction with smooth edges and proper depths
UV clarifiers for crystal-clear water
Aeration systems for healthy oxygen levels
Predator protection design
Koi health and water quality guidance

Koi ponds in Western NC should be at least 3 feet deep, with 4–6 feet being ideal for larger koi. Deeper ponds maintain more stable water temperatures and give koi room to grow and thrive. We design each pond based on your fish goals and property terrain.
A properly built koi pond in Western NC typically starts around $6,000 for a small pond and can range up to $30,000+ for a large, premium koi pond with advanced filtration, waterfalls, and extensive stonework. Free on-site consultations available.
We use Aquascape methodology with multi-stage filtration systems — including biological filters, mechanical skimmers, UV clarifiers, and bog filters where appropriate. Every system is designed for your pond size, fish load, and local conditions.
Schedule your free on-site consultation. We'll assess your Old Fort property and design a plan tailored to your vision.
Outside our typical service area — Black Mountain, Asheville, Candler, Old Fort, Fairview, and Marion — we are happy to travel for the right project. Depending on the distance and scope, we add an estimate for additional labor, travel, and (for multi-day jobs) lodging. Tell us your location when you request a consultation and we will build it into the proposal.