
Estimating can make or break a construction project. Especially in Texas, where projects are big, deadlines are tight, and weather can be wild. As 2025 rolls around, Texas contractors must be extra sharp. Here are 15 common estimating mistakes you should avoid to keep your projects on time and on budget.
1. Not Visiting the Site
It sounds simple, but you’d be surprised. Bidding without seeing the site can lead to major surprises later. Every site is different. Visit. Always.
2. Ignoring Local Permits and Codes
Texas has its own building codes and local quirks. Forget to include those in your estimate and you’ll get delays and extra costs.
3. Underestimating Labor Costs
Your crew deserves fair pay. Don’t assume last year’s rates will work for 2025. Labor costs change. Keep it up to date!
4. Not Accounting for Weather Delays
Texas weather is unpredictable. One storm can put you days behind. Add buffer time to your estimates.

5. Overlooking Material Price Fluctuations
Lumber, steel, concrete—they all shift in price. Always check current rates before estimating. This is a game-changer.
6. Forgetting About Equipment Rentals
Need a crane? Excavator? Scissor lift? Don’t forget to include rental costs, insurance, and delivery fees.
7. Not Including Waste and Overages
You’ll never use exactly the amount of materials you planned. Always add 5-10% for waste and mistakes. It’s better to round up!
8. Using Old Templates
Templates are handy, but if they’re outdated they could contain old numbers and bad assumptions. Review and refresh your templates often.
9. Skipping the Subcontractor Review
If subs aren’t on the same page financially, the whole project suffers. Review their quotes carefully. Double-check what’s included.
10. Poor Communication with the Client
Guessing what the client wants leads to mistakes. Ask questions. Clarify everything. Include exactly what they expect—and nothing they don’t.

11. Not Including General Conditions
Site management, temporary fencing, porta-potties… These are real costs too. Make sure they’re in the bid.
12. Forgetting Insurance and Bonding Fees
Commercial projects in Texas often require bonding. If you miss this in the estimate, you’ll lose profit fast.
13. Relying Only on Software
Estimating software is great, but it doesn’t think for you. Always double-check with a human brain. Yours.
14. Not Reviewing Previous Jobs
Past projects are gold mines of info. Compare estimates to actual costs. Where did you miss? Learn from it!
15. Rushing the Estimate
Time is money, but a bad estimate costs more. Take your time. Get it right the first time.
Final Thoughts
Contractors in Texas are some of the hardest-working folks in the industry. But even the best can slip up if they’re not careful with estimates. By avoiding these 15 mistakes, you’ll start 2025 on solid ground—pun intended.
Remember: Double-check everything. Communicate clearly. And keep learning from every job.