Short answer
Renovation cost is scope discipline. Decide what is cosmetic, what touches systems, and what needs plans before you ask for bids.
Cost drivers
What moves the number.
Budget by systems
Group work by kitchen, bath, electrical, plumbing, HVAC, windows, flooring, and structural changes.
Do not bury permit scope
If work requires drawings or inspection, account for that up front.
Use alternates
Good budgets show must-have scope and optional upgrades separately.
Planning ranges
Use ranges until scope is real.
| Line item | Planning range | Why it moves |
|---|---|---|
| Refresh | $75-$150/sq ft | Mostly finishes, fixtures, and paint. |
| Major renovation | $180-$420+/sq ft | Systems, layouts, kitchens, baths, and structural updates. |
| Planning | 4%-14%+ | Plans, design, permit coordination, and engineering as needed. |
FAQ
Fast answers.
Is this a contractor bid?
No. It is a planning estimate that helps you understand the likely budget range before drawings, engineering, city review, and contractor pricing.
Why is the range wide?
Early construction budgets should be ranges because site conditions, structural scope, utility work, finishes, permits, and contractor availability can move the number fast.
Do I need to enter contact information?
No. The estimate appears first. Contact information is only for saving the estimate or asking for a local review.
