Most first-time renovators assume the choice is between hiring “a good contractor” and hiring “a good architect.” In practice, the more important decision is structural: do you want one company responsible for both design and construction, or do you want to manage two — sometimes three — separate relationships yourself?
How Traditional Contracting Works
In the traditional model, you hire an architect or designer to draw up plans, then hire a separate contractor to build them. Each party works to their own scope, their own schedule, and — critically — their own definition of whose fault a problem is. If the drawings don’t match site conditions, the contractor calls it a design issue. If construction runs over budget, the designer calls it an execution issue. The homeowner ends up as the referee.
How Design-Build Works
In a design-build model, one company is responsible for the full process — design, authority approvals, sourcing, and construction — under a single contract. There’s no handoff between design and build, because the same team does both. If something doesn’t work on site, there’s no external party to blame; it simply gets solved, because the people who designed it are the same people building it.
Where Traditional Contracting Still Makes Sense
Design-build isn’t automatically better for every project. If you already have an architect you trust and drawings you’re happy with, and mainly need a contractor to execute them, traditional contracting can work well — provided you’re comfortable managing the coordination between the two sides yourself. It also leaves more flexibility to change designers mid-project if you’re unhappy, since the two roles were never tied together.
Where Design-Build Wins
For a full-scope villa renovation — where layout, MEP, permits, and finishes are all being decided from scratch — design-build tends to produce fewer surprises. Because the design team also has to build what they draw, they’re less likely to specify something structurally unrealistic or a finish that fights the mechanical constraints. Budget also tends to be more predictable, since one company is pricing the whole project rather than two companies pricing their own piece and leaving the interfaces uncosted.
The Fee Question
Traditional projects often separate architect fees, design retainers, and contractor markups, making total cost difficult to pin down until the project is well underway. A design-build firm charging a single, fixed percentage on construction cost — the way Mignon’s model is structured — gives homeowners one number to plan around from the outset, covering design, project management, authority submissions, and site supervision.
What to Ask Before You Decide
Whichever model you choose, ask the same questions: who is responsible if the design and the site don’t match? Who absorbs the cost of a change caused by something the drawings missed? And who is the single point of contact when something goes wrong on a Thursday afternoon? The answers say more about how smoothly a renovation will run than any portfolio photo will.
There’s no universally correct answer — plenty of homeowners genuinely prefer managing their own designer and contractor. But for one point of accountability across a full villa renovation, from first sketch to final handover, it’s worth understanding how a custom home build or renovation is priced and managed differently under each model before signing anything.
