Design-build firms are typically compensated as a percentage of the total project cost that covers the integrated design, engineering, and construction management under one contract. In Las Vegas, a fully custom whole-home design-build remodel ranges from $500 to $850 per square foot, with complex custom remodels involving structural changes running $650 to $1,000 per square foot. The design-build fee is embedded in the project total rather than billed as a separate architectural retainer plus contractor markup.