What it is
A cost overrun is the gap between the contract price at the start of a project and the actual total at the end. In residential remodeling, overruns of 10–30% are common — and they're almost always caused by the same handful of root issues.
Why it matters
Overruns aren't just financial. They damage trust, drag out timelines, and turn what should be an exciting project into a months-long source of stress. Most are preventable with the right planning.
What homeowners should know
Most overruns are predictable
The cost overrun on a typical 'I just want to start' project is roughly the price of the planning phase that didn't happen. Planning isn't an expense — it's the cheapest insurance available against overruns.
Allowances disguise future overruns
A bid with low allowances looks competitive but bakes in future overages. Compare bids line by line, not by bottom-line total.
A small contingency is normal — a large one is a red flag
Even well-planned projects carry a 5–10% contingency for hidden conditions. If a contractor expects 20%+ in change orders, the scope wasn't tight enough at the start.
Change orders aren't all bad
Some change orders are homeowner-driven upgrades (a better range, a wider island) that genuinely add value. The problem isn't change orders themselves — it's change orders forced by incomplete planning.
Common mistakes
Incomplete scope at the start
If the original scope didn't fully define what was being built, every gap becomes a change order. 'We'll figure it out as we go' is the most expensive sentence in remodeling.
Mid-project selection changes
Changing tile, cabinetry, or layout after construction has started forces rework, restocking fees, and lost crew time. A single mid-project change can cost more than weeks of careful planning would have.
Hidden conditions behind walls
Older DFW homes often hide outdated plumbing, undersized electrical, missing insulation, water damage, or non-code framing. These are real costs, but a thorough pre-construction investigation surfaces most of them before pricing is finalized.
Rushed or fatigued decision-making
When homeowners are forced to make 20 selections in one week, the decisions are worse and the regret rate is higher. Regret becomes change orders. A guided, paced selection process eliminates this.
Planning considerations
- Push as many decisions as possible into the planning phase, not the construction phase.
- Insist on a written scope document with line items — not just a lump-sum bid.
- Ask how the contractor handles change orders and what their typical change-order rate is.
- Carry a 5–10% contingency in your own budget for hidden conditions in older homes.
- Avoid bids that rely heavily on low allowances — they're often deferred cost.
Frequently asked questions
What's a normal cost overrun on a remodel?
Industry-wide, 10–20% overruns are common. Well-planned projects often come in within 3–5%. The difference is almost entirely planning depth, not contractor skill.
How much should I budget for contingency?
On a newer home (post-1995), 5% is usually sufficient. On a home built before 1980, 10% is more realistic — older homes tend to surface unexpected conditions when walls open.
Can I get a guaranteed price on a remodel?
Yes — once scope and selections are fully defined. A fixed-price contract requires complete planning first. That's the entire point of a planning-first process: getting to a real price before construction starts.
What if I find something unexpected during demo?
Reputable contractors document the finding, get your approval before proceeding, and price the additional work transparently. Walking into hidden conditions and disappearing the change order into the next invoice is a major warning sign.
Next steps
Keep learning, or talk through your project with our team.