Most delays come from just 7 repeatable causes . A good builder prevents them with front-loaded planning, locked decisions, tight procurement, and weekly controls . Top causes of delays:  design changes, permit bottlenecks, late finish decisions, material lead times, site surprises, weather/curing time, and payment/procurement gaps. Prevention:  freeze scope early, complete requirements before filing, set decision deadlines, pre-order long-lead items, verify site conditions,