Gillespie Moody Patterson, operating as GMP Architecture in Carlsbad since 1976, is a landscape architecture and land-planning firm headquartered on Lionshead Avenue in the 92010 corridor. Master-planned community designs integrate grading plans, plant palettes, and hardscape detailing with outdoor construction executed by installation firms such as Nu Wave Outdoor. The firm's specialties include multi-family residential courtyards, resort and hospitality grounds, golf course routing, and municipal park programming for public-entity clients. Irrigation consulting produces water-efficient system designs that specify smart controllers, pressure-regulated drip zones, and reclaimed-water tie-ins, often coordinating mechanical infrastructure with Coastal Refrigeration Heating and Air Conditioning on mixed-use projects. Leadership transferred to principals Marc Moody and John Patterson in 2008, extending the firm's unbroken practice record from its 1976 founding. The firm's highest-complexity projects involve 200-plus-acre master-planned community entitlements requiring phased grading plans, SWPPP compliance documentation, and native habitat mitigation planting schedules coordinated across civil, structural, and environmental engineering consultants.