Understanding Cost-Plus Contracts — and Why Transparency Matters

When you build a custom home, the biggest source of anxiety isn’t the design — it’s the cost.

Homeowners often wonder: Will the final price match the bid? What happens if costs change? Can I see where my money goes?

At Totten Construction, we answer those questions with one simple principle: transparency.

That’s why we build under a Cost-Plus contract — a model that gives homeowners full visibility and control from day one.

1. What Is a Cost-Plus Contract?

A Cost-Plus contract is straightforward:

You, the homeowner, pay the actual cost of construction — materials, labor, and trade invoices — plus a fixed builder’s fee, typically a percentage of the total cost.

For example:

If your home costs $1,000,000 to build, and the builder’s fee is 25%, you’ll pay $1,250,000 total — with a complete record of how every dollar was spent.

It’s a transparent system that aligns your goals with your builder’s: deliver the highest quality, at the most efficient cost.

2. How It Differs from a Fixed-Price Contract

A Fixed-Price contract gives a single lump-sum bid — but behind the scenes, it includes contingencies and guesswork.

Builders must protect themselves from unknowns, so they often pad the price or issue change orders later.

With Cost-Plus, you see:

Every trade bid and vendor invoice
Real-time updates as pricing evolves
Adjustments based on your selections, not builder speculation

That transparency fosters trust and ensures you pay for what’s actually built, not what was estimated months earlier.

3. The Advantages for Homeowners

Clarity: Open-book accounting and clear reporting on all costs.
Flexibility: Freedom to make design or finish changes without hidden markups.
Value: Eliminates “low bid” tactics that lead to quality compromises.
Alignment: The builder and owner share the same goal — best value, best build.

At Totten Construction, every client receives detailed cost tracking and milestone-based draw schedules, ensuring financial clarity from foundation to finishes.

4. When Cost-Plus Works Best

This model is ideal for:

Custom homes and complex builds where designs evolve during construction.
Architect-driven projects requiring coordination across trades and materials.
High-end renovations or coastal rebuilds with unknown existing conditions.

In short: when precision matters more than price guessing, Cost-Plus is the smarter path.