Design and Build, or Architect and Contractor Separately?

There are two honest ways to build a villa in Bali. You can hire an architect, develop the design, tender it to contractors and sign a separate construction contract. Or you can hire one company to do both. Each is defensible. They fail in different ways, and the failure modes are what should decide it.

Separate architect and contractor

The traditional route. You own the design. You can tender it to several builders and compare prices against the same drawings, which is the cleanest form of price competition there is. Your architect is contractually on your side of the table during construction, administering the contract and certifying payments.

What it costs you is the gap. Every drawing that is incomplete, every detail that is not coordinated between architect and engineer, becomes a question on site — and on site, questions cost time and produce variations. When something does not work, the architect says the contractor built it wrong and the contractor says the drawing was wrong, and you are the one standing between them holding the invoice.

Design and build

One company draws it and builds it, under one contract, for one price. The gap closes: there is nobody to blame but the company you hired, so the coordination problem becomes their problem instead of yours. It is usually faster, because construction can begin on the early packages while later details are still being resolved, and because the people drawing it already know how their own site teams build.

What it costs you is independence. The people producing the design are the people who profit from building it, so there is nobody at the table whose only job is to protect your interest. That is a real concentration of trust, and it is why the choice of company matters far more on this route than on the other one.

How to choose between them

• Design and build suits owners who want a single point of responsibility, a shorter programme, and a budget fixed early; villas where the brief is clear and the architecture does not need to be unprecedented; and anyone building remotely, from another country, who cannot arbitrate a dispute in person.
• Separate procurement suits owners who want a specific architect, a design-led or unusual house, and the time to develop it properly before anyone prices it — and who will be on the island enough to run it.

If you choose design and build, protect yourself anyway

The concentration of trust is manageable if you insist on three things:

• A specification you can read. Materials, brands and quantities written down, so “equivalent” cannot quietly mean “cheaper” later.
• Milestone payments against inspected work, with retention held past handover.
• An independent inspection at structure, at waterproofing and at handover. A few hundred dollars for a second pair of eyes at three moments is the best-value money in the whole project, and a company confident in its work will welcome it.

Neptune works both ways. We design and build under one contract, and we also build other architects' drawings — including drawings we would have detailed differently, which we say at tender rather than discovering at handover. If you already have a design you love, bring it. If you have land and an idea, we can start at the sketch.