Design-and-Build vs Traditional Contracting

Traditional contracting splits design, tender, and execution across multiple parties. Design-and-build (turnkey) merges design coordination and site delivery under one contractor.

Traditional model

Architect designs → client tenders trades → multiple vendors execute → client integrates.

Works when: design is highly bespoke, client has strong internal PM, and vendor relationships are long-standing.

Design-and-build model

Single contractor aligns design buildability, BOQ, procurement, and site trades.

Works when: programme is fixed, building is live, and MEP coordination complexity is high, typical for office fit-outs in Delhi NCR.

Key difference: who owns the gap

When ceiling height does not match duct routing, traditional models debate responsibility. Turnkey contractors resolve buildability before mobilisation.

For a fuller view of how turnkey office interior design lowers fit-out risk, and when it does not, read turnkey office interior design. Or compare turnkey vs PMC and request a quote.