Construction Cost Estimator

Our estimator provides ballpark figures based on average retail prices from Home Depot, Lowe's, and similar big-box stores. It uses standard construction formulas for material quantities and labor hours. While it's a reliable starting point for budget planning, actual project costs depend on site conditions, local pricing, project complexity, and contractor rates. We always recommend getting a professional on-site estimate before committing to a budget.

Material prices are sourced from average retail pricing across major home improvement retailers including Home Depot, Lowe's, Menards, and Floor & Decor. We offer three pricing tiers — Budget, Mid-Range, and Premium — to reflect different quality levels available at these stores. Prices are periodically updated to reflect current market conditions.

Use our 'Calculate from Home Size' feature! Enter your home's total square footage, number of stories, and ceiling height. The estimator automatically calculates the paintable wall area using standard construction formulas (accounting for interior partition walls and deducting for windows/doors). Then choose your paint quality tier and set the labor rate to get a detailed cost breakdown.

The waste factor accounts for material that's cut, damaged, or otherwise unusable during construction. Industry standards range from 5–15% depending on the project. We default to 10% — which covers normal cutting waste, mistakes, and material defects. For projects with complex layouts or patterns (like diagonal tile), you may want to increase this to 15–20%.

Labor rates vary by trade, experience, and location. Our default rate is a reasonable starting point for general residential work. Adjust the slider based on your trade and area — specialized trades and high-demand locations typically command higher rates. Contact us for a quote tailored to your project.

The contractor markup (typically 15–30%) covers overhead costs that go beyond materials and direct labor. This includes: business insurance and licensing, project management and coordination, tool and equipment costs, vehicle and fuel expenses, office and administrative costs, warranty and callbacks, and profit margin. If you're doing the work yourself (DIY), set the markup to 0%.

Use our estimator to get a personalized breakdown! Enter your home's square footage, number of stories, and ceiling height. Then choose your paint quality tier and set the labor rate. The estimator calculates paintable wall area, material quantities, and total cost based on your specific inputs. Every home is different — try it out for an accurate estimate.

Concrete costs depend on slab thickness, finish type, site access, and reinforcement requirements. Use our estimator to get an accurate breakdown based on your specific project dimensions. Factors that increase cost include thicker slabs, decorative finishes (stamped, colored, exposed aggregate), difficult site access, and slope grading. Enter your project details for exact numbers.

Currently, you can print your estimate using the 'Print Estimate' button at the bottom of the results panel. This creates a print-friendly version you can save as a PDF or print on paper. We're working on adding save, email, and share features in a future update.

Yes! Subworkit Contracting provides free professional on-site estimates throughout San Diego County. Our licensed team (CA License #945572) will measure your project, discuss materials and options, and provide a detailed written quote. Call (424) 384-7624 or visit our contact page to schedule.