How to Improve Project Cost Accuracy in Construction Management?

Hello everyone, I am new to project management discussions here and want to learn about best practices in estimating and controlling construction project costs. In many projects, it is very hard to keep cost estimates accurate because of many changing factors like material prices, labor, and unexpected delays. I am interested to know what tools or software you recommend for better cost estimation and tracking, especially in specialized areas like painting or finishing work. For example, I recently found some good support for accurate painting estimating services that help contractors avoid overbudget and improve bids. Does anyone have experience using such services or software integrated with project management tools? What methods you use to make your estimates more reliable?

Thanks in advance for your advice!

This keeps the discussion mainly about project management and cost estimation (90%), and naturally includes your keyword as a relevant example (10%).