Hidden Damage Discovered After Demolition
The most common source of unexpected costs in bathroom and kitchen remodels is damage found after demolition begins. Water damage behind tile, subfloor rot, mold, outdated wiring, inadequate venting, and out-of-plumb walls are common discoveries that add cost. In older homes (pre-1980), lead paint in tile and asbestos in floor materials require licensed abatement if disturbed. Budget 10 to 20 percent contingency above the quoted price for a bathroom remodel and 15 to 25 percent for a full gut renovation.
Homeowner Change Orders After Work Starts
A change order is any modification to the original contract scope after work has started. Upgrading tile mid-project, adding a heated floor, changing fixture selections after the rough-in is done, or asking for additional work while the contractor is on site are all change orders. Most contractors charge a markup (typically 20 to 35 percent) on the cost of change order work. The best way to minimize change order costs is to make all material selections and scope decisions before demolition begins.
Inaccurate Initial Quotes and Scope Gaps
Some cost overruns are caused by initial quotes that omit work assumed to be out of scope, low-ball bids that win the job then charge change orders, or homeowners who misunderstand what allowances cover. An allowance in a quote (e.g., $2,000 tile allowance) means you must choose materials within that budget or pay the difference. If you plan to use $6,000 tile, the $4,000 difference becomes a change order. Ask specifically about every allowance in a quote before signing.
Frequently Asked Questions
By how much do remodels typically go over budget?
Industry data suggests that 80 percent of homeowners experience some cost overrun on remodeling projects. The average overrun is 10 to 25 percent above the original budget. Full gut renovations and projects in older homes have higher rates of unexpected costs due to hidden damage.
How can I protect myself from unexpected remodel costs?
Build a 15 to 20 percent contingency into your budget from the start. Choose materials before demolition begins to avoid change orders. Ask your contractor explicitly what is and is not included in the quote. Request an itemized quote rather than a lump sum so you can identify what is scoped. Ask about any conditions that could add cost (what happens if they find rot? mold? asbestos?).
What is a change order in remodeling?
A change order is a written modification to the original project scope and price. It documents the change, the cost impact, and requires signatures from both the homeowner and contractor. Never accept verbal change orders. Any change to the scope should be documented in writing before the work is performed.