Remodeling
Renovation Cost Calculator
Prices a renovation, where the quote is a scope agreement as much as a number.
Result
A planning estimate, not a quote. Access, the age of the equipment, what is found once it is opened up and local labour rates all move the real figure, sometimes a long way.
Get a Free Business AuditHow the calculation works
Hours times crew times rate, plus materials and the call-out. On renovation work the hours are the uncertain part, because the scope is partly hidden until demolition. A useful estimate therefore has three layers: work that is visible and can be priced firmly, work that is likely and can be allowed for, and work that is possible and is named as a variation with a rate. Collapsing all three into one number means either losing the job or absorbing the difference.
What moves the number
- Age of the building, since older construction brings more surprises per square foot.
- How much demolition precedes the first firm look at the structure.
- Whether permits and inspections are needed, which set the calendar.
- Whether the client is living in the space, which slows everything.
Where this one goes wrong
Scope creep is the defining risk and it is managed with paperwork rather than goodwill. Small additions during a renovation feel trivial individually and accumulate into weeks, and a job without a written change process ends in a dispute about what was included. Agree a variation procedure before starting. The other thing to establish early is what the building actually is: in housing built before 1978 disturbing paint brings federal lead-safe requirements, and older buildings can contain asbestos in flooring, insulation and textured finishes, which is a testing and licensed abatement question rather than a demolition one.
Before you quote
- Separate firm scope, allowances and named variations in the quote.
- Agree a written change order process before starting.
- Check for lead and asbestos in pre-1980 construction before demolition.
Where the rules come from
Questions
About this calculator
Why do renovation quotes change?
Because part of the scope is hidden until demolition. Rot, failed wiring, undersized framing and previous bad work are all common and none are visible beforehand. A quote that separates firm pricing from named variations handles that honestly; one that gives a single number has either padded it or will have to revise it.
How do I stop scope creep?
With a written change process agreed before work starts. Small additions feel trivial in the moment and add up to weeks of unpriced labour. Documenting each one with its cost and schedule effect, and having it signed, is what keeps the relationship intact at the end.
Do I need to test for asbestos or lead?
In pre-1980 construction it is worth establishing before demolition. Disturbing paint in pre-1978 housing brings federal lead-safe work requirements, and asbestos turns up in old flooring, pipe insulation and textured finishes. Both are testing and licensed-work questions rather than things to discover mid-demolition.
The formula
total = hours x people x rate + parts + call-out, then sales tax
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How to use this calculator
- Hours on site (h). Enter your own figure; the page starts at 160 h.
- People needed. Enter your own figure; the page starts at 1.
- Labour rate charged ($). Enter your own figure; the page starts at $88.
- Parts and materials ($). Enter your own figure; the page starts at $11,000.
- Call-out or diagnostic fee ($). Enter your own figure; the page starts at $95.
- Sales tax (%). Leave at zero if you are quoting before tax.
The result updates as you type, so you can try a figure, see what it does to estimated total, and change it back. Nothing you enter is sent anywhere or saved.
A worked example
These are the figures the calculator opens with. Every number in the results column below is produced by the same calculation the page runs, so you can follow it through before putting your own figures in.
What goes in
| Input | Value |
|---|---|
| Hours on site | 160 h |
| People needed | 1 |
| Labour rate charged | $88 |
| Parts and materials | $11,000 |
| Call-out or diagnostic fee | $95 |
| Sales tax | 0% |
What comes out
| Result | Value |
|---|---|
| Estimated total main result | $25,175 |
| Labour | $14,080 |
| Before tax | $25,175 |
| Sales tax | $0 |
About $25,175: $14,080 of labour, $11,000 of parts and a $95 call-out.
How sensitive the answer is
Holding everything else steady and changing only labour rate charged, this is what happens to estimated total. It is worth knowing which of your inputs the answer actually hinges on, and which barely move it.
| Labour rate charged ($) | Estimated total |
|---|---|
| $44 | $18,135 |
| $66 | $21,655 |
| $88 example above | $25,175 |
| $132 | $32,215 |
| $176 | $39,255 |
Every other input is held at the example value while this one changes, which is not how a real job behaves. Treat it as a guide to which number matters most, not as five separate quotes.
What each figure means
- Hours on site (h)
- Measured in h, between 0 and 400, starting at 160 h.
- People needed
- A number, between 0 and 40, starting at 1.
- Labour rate charged ($)
- A money amount, starting at $88.
- Parts and materials ($)
- A money amount, starting at $11,000.
- Call-out or diagnostic fee ($)
- A money amount, starting at $95.
- Sales tax (%)
- Leave at zero if you are quoting before tax.
What the results tell you
| Result | What it is |
|---|---|
| Estimated total | The headline result. A money figure. |
| Labour | A money figure. |
| Before tax | A money figure. |
| Sales tax | A money figure. |
Estimating is the easy part
The jobs you never hear about cost more than the ones you mis-measure. BDEVY builds the marketing, systems and automation that bring them in.