DIY vs Vendor Repair Cost Calculator

Compares the true cost of a landlord doing a repair themselves, including their time and the chance of a redo, against a vendor's quote, so the call is based on numbers rather than habit.

Your estimate

True cost of doing it yourself...

Savings versus the vendor quote...

Hourly value where the two options break even...

Verdict...

Estimates only. Assumptions are listed below, and you can change every input.

The vendor quotes $450 and the parts are $120 at the hardware store, so doing it yourself looks like an easy $330 saved. That comparison leaves out the afternoon you spend on it, the tool you had to buy, the second trip for the fitting you forgot, and the chance you end up calling the vendor anyway. Some repairs really are cheaper in your own hands. Others only look that way until the weekend is gone.

This calculator puts the hidden items on the table. It adds parts, tools, your hours at whatever rate you set, and a redo allowance equal to the vendor quote multiplied by the chance the job fails and a pro has to fix it. The result is a true DIY cost you can compare directly with the quote, plus the hourly rate at which the two options break even. It does not cover licensing or safety rules; electrical, gas and structural work often require a licensed pro regardless of what the math says.

How to use this tool

Enter the vendor's total quote for the repair, including parts and labor.
Estimate your own parts, any tools you would need to buy or rent, and the hours the job would take you from the first trip to cleanup.
Set what your hour is worth and an honest chance the job needs a pro afterward, then compare the true DIY cost with the quote and check the break-even hourly rate.

What the math assumes

Your time is priced at the hourly value you enter, for every hour including shopping, travel and cleanup.
If the DIY job fails, the cost of fixing it equals the full vendor quote, weighted by the redo chance you enter.
Tools bought for the job are charged entirely to this repair, even if you will use them again later.
The verdict says "About even" when the gap between the two options is under 10% of the vendor quote.
Code, permit and licensing requirements are not modeled; some jobs must go to a licensed pro regardless of cost.

Frequently asked questions

What hourly value should a landlord use for their own time?

Use what you would otherwise earn or pay for that time. If you would spend the afternoon at your day job, use that rate. If it is a free Saturday you would enjoy on a ladder, a lower figure is honest too. The break-even output tells you the rate at which the answer flips.

How do I estimate the chance a pro has to fix it afterward?

Think about the last few similar jobs. If you have done this repair before and it held, a low number is fair. If it involves plumbing joints, appliance wiring or anything you have never done, a higher number reflects reality better than optimism.

Does a positive savings figure mean I should always do the job myself?

No. The calculator only compares cost. Habitability rules, lease terms, insurance and local licensing can all require a professional, and a tenant waiting two weeks for your free weekend is a cost the math does not capture.

Why is the break-even rate 0 for some inputs?

It is 0 when you enter 0 hours, because there is nothing to divide by, or when parts, tools and the redo allowance already exceed the quote, in which case the vendor is cheaper even if your time is free.

Link to this toolhttps://rentfixr.com/tools/diy-vs-vendor-repair/

Free for readers and publishers alike. If you cite the result in an article, a link to this page helps others find it.

More free tools from RentFixr

Maintenance Request Time Saved Calculator: Estimates how many hours a month a small landlord gets back by logging tenant maintenance requests in one tracked system instead of phone calls, texts and paper, and what that time is worth after the software cost.
Rental Maintenance Reserve Calculator: Estimates how much a landlord should set aside each month per rental unit for repairs and maintenance, and how many months it takes to build a target reserve from the current balance.

Track every repair in one place

Rental maintenance request tracking for landlords.

Start free