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10 Most Expensive Renovation Mistakes

Every one of these costs homeowners thousands. All of them are preventable.

1. Starting demolition before finalizing material selections

Your contractor needs exact specifications for cabinets, countertops, tile, flooring, and fixtures before demolition day. When homeowners haven’t decided, work stops — idle crews still cost money. Cabinet lead times alone run 4–16 weeks.

→ Finalize every selection and confirm delivery dates before signing the demolition start date.

2. Skipping the contingency budget

Behind every wall is a potential surprise — water damage, outdated wiring, asbestos, termite damage, or plumbing about to fail. Without contingency funds, every surprise becomes a crisis that stalls the project.

→ Budget 10–15% contingency for newer homes, 15–20% for homes built before 1990.

3. Hiring based on the lowest bid

The lowest bid is often low because it’s based on thinner scope, cheaper materials, or underbidding to win the job. Change orders fill the gap later — and they always cost more than original scope pricing.

→ Compare bids line-by-line. Confirm identical scope, materials, and quality tier across all estimates.

4. Not verifying contractor insurance independently

A certificate of insurance can be expired, forged, or for a different entity. If an uninsured worker is injured on your property, you can be held personally liable.

→ Call the insurance company directly. Verify both GL and workers’ comp are active and name the correct business.

5. Making changes during construction

Every mid-project change triggers a change order priced at a premium because it disrupts scheduling and may involve restocking fees. A “small change” that costs $500 in planning costs $2,000 as a change order.

→ Make all design decisions during planning. Get change order costs in writing before approving.

6. Ignoring permit requirements

Unpermitted work creates problems at resale — inspectors flag it, buyers demand price reductions, and some lenders won’t finance homes with unpermitted modifications. Retroactive permits cost more and may require opening finished walls.

→ Pull every required permit. Your contractor should handle this — verify it’s done before work begins.

7. Over-improving for the neighborhood

A $150,000 kitchen in a neighborhood where homes sell for $350,000 is money you’ll never recover. Your renovated home’s value is capped by comparable sales within a half-mile.

→ Research comparable sales before setting your budget. Target the top 25% of the neighborhood, not the top 1%.

8. Paying too much upfront

Contractors demanding 50% upfront are either undercapitalized or untrustworthy. Large upfront payments eliminate the contractor’s incentive to complete work on time and to standard.

→ Never pay more than 10–15% upfront. Tie payments to completed milestones. Hold 10–15% until punch list completion.

9. Not planning for where you’ll live during construction

Major renovations make your home partially unlivable for weeks or months. Temporary housing, eating out, and laundromat costs add up fast and are rarely budgeted.

→ For projects lasting 4+ weeks, budget $2,000–$5,000/month for temporary living costs.

10. Choosing materials that don’t suit the Southeast climate

Solid hardwood on a Florida slab. Untreated wood decking in Georgia humidity. Standard drywall in a below-grade basement. These are material failures waiting to happen — expensive because you’re replacing work you already paid for.

→ See our material comparison charts for recommendations specific to Georgia and Florida conditions.

Recommended Contractor

Bowser Construction Group

Licensed in Georgia and Florida with over 15 years of experience. Detailed estimates, milestone-based payments, and dedicated project management on every job.

Bowser Construction Group →

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