The 70% rule in hiring for home service owners

What the 70% rule says

If you’ve sat through three rounds of interviews, finally found the right person, and then lost them to a small counter-offer, you already know why the 70% rule exists. Most home service owners aren’t losing money because nobody applies. They’re losing it while they wait for someone who checks every box on a job description copied from an old Indeed template.

The 70% rule (also called the 70/30 rule) is simple: if a candidate meets about 70% of the requirements on your job description, hire them. The other 30% is the gap you close with onboarding, training, ride-alongs and time on the truck.

The 70% is a rule of thumb from recruiters, with no study behind the exact number. What matters is that you separate must-haves from nice-to-haves.

The math is simple. An open seat costs you every day it sits: lost revenue, missed calls, tired techs and overtime. How much depends on your trade, your market and your ticket size, and skilled trade roles can take weeks to fill. Hiring a 70% candidate today and training the gap usually beats hiring a 95% candidate six weeks from now. Whatever bar you set, apply it the same way to every candidate for the role. Uneven criteria are unfair to candidates and can lead to discrimination claims.

When the 70% rule leads to bad hires

The rule was meant to fight hiring perfectionism. Used carelessly, it turns into an excuse to lower the bar. These are the common ways owners get burned:

They protect the wrong 70%. They hire someone with the technical skills who can’t talk to a homeowner, won’t follow a process, or hates ride-alongs. You can train skills. Attitude is much harder to change.

They mistake a red flag for a trainable gap. A missing EPA certification is a trainable gap. Three jobs in 18 months with no explanation deserves a hard question in the interview.

They skip the behavioral check. The 70% rule is a résumé rule. It says nothing about whether the person will show up on time, talk to a customer like a professional, or stay long enough to be worth training. Mark Murphy’s Hiring for Attitude research at Leadership IQ is the classic source here: it found that attitude and coachability, more than technical skill, explain most new-hire failures.

Most bad hires in the trades can do the work. What goes wrong is behavior: showing up on time, owning mistakes, talking to customers, following through, and handling conflict on a job site. Résumés don’t show any of that, and the 70% rule alone won’t catch it.

How to pair the 70% rule with a behavioral check

Use the 70% rule on the résumé. Be honest about which technical requirements are floors and which are nice-to-haves, and stop turning people away for missing the nice-to-haves. Then add a fit check before you spend three interviews on someone. Once you know a person has 70% of the skills and fits the seat, you stop trading slow hires for fast bad hires.

A bad hire costs you the rehiring, the training, the lost work and the unhappy customers. Published figures for that cost vary widely, so don’t lean on any one number. The seven steps below are the version you can run on Monday morning.

Step 1: Cut your job description down to the real floor

List every requirement on your current job description. Mark each one as needed on day one, needed by day 30, or nice to have. For most service roles, the day-one list is short: a license or certification where the law requires one, a basic skill floor, a clean driving record, and showing up to scheduled jobs on time. If your day-one bucket holds more than a handful of items, look at it again.

Owners tend to write job descriptions like wish lists, with every skill they’ve ever wanted in a tech and certifications the job doesn’t need. Sorting each line is what turns the 70% rule into a decision you can defend.

Step 2: Write down how you’ll train the 30%

Decide in writing how you’ll close the gap before you make an offer. “We’ll train them up” is a hope. “They ride with our senior tech for 30 days, hit these five skills by day 60, and pass a sign-off ride at day 90” is a plan. If you can’t write the plan, you aren’t ready to use the 70% rule. The 30% is a training commitment, and writing it down keeps it from turning into a lower bar.

Step 3: Add a behavioral check before the first interview

A résumé review shows skills. A short phone interview shows how someone communicates. Neither shows behavioral fit for a service seat, so put a structured behavioral assessment in front of the interview. For a home service crew, behavioral fit comes down to a few questions:

• Do they tend to follow an established process, or do they prefer to improvise?
• How have they handled pressure on a stuck job: did they ask for help or hide the problem?
• Do their past roles show a steady pattern of good work with customers?
• Have they owned a mistake that cost their employer money?
• Does their track record suggest they’ll still be on the truck six months from now?

Answering those before the interview catches the 70% rule’s biggest failure, a fast bad hire, before it costs you half a day.

Some states and cities regulate automated hiring tools and may require bias audits, notice to candidates, or consent. If a background check or assessment vendor counts as a consumer reporting agency, the FCRA requires written consent from the candidate and proper adverse-action notices. Check your local rules with an employment attorney before you use any assessment in hiring.

Step 4: Interview against the must-haves

Walk into the interview with your day-one must-haves and the behavioral results. Skip trivia questions. Ask: “Tell me about a time a customer was angry when you showed up. Walk me through what you did.” Then stop talking and listen. Interviewing against the real floor keeps you from turning down good people over nice-to-haves, and it keeps the conversation on the behaviors that predict how they’ll do on the truck.

Step 5: Ask references about behavior

Anybody can confirm “yes, he worked here.” Ask the question that makes a former boss take a position: “Would you put him back on your truck tomorrow? Why or why not?” The duties are already on the résumé. A long pause, or a quick yes, tells you what a job title can’t.

Step 6: Make the offer fast

If a candidate passes the 70% bar, the behavioral check and the references, make the offer that week. Good candidates often take another offer while you wait. In a tight trades labor market, someone who clears your bar is probably clearing other shops’ bars too. The 70% rule exists to cut the cost of waiting, and a slow offer hands that time to a competitor.

Step 7: Plan the first 90 days

The 70% rule is a hiring shortcut backed by a training promise. Skip the training and you’ve just lowered the bar. A real 90-day plan makes the 30% an investment you can track.

Signs the rule is working:

• You turn down most résumés on the first read and stop dragging marginal candidates through three interviews.
• Time to fill drops, because you’ve stopped waiting for a perfect match.
• More new hires make it to 90 days, because the behavioral check catches the fit problems that used to cause early quits.
• You can explain every hiring decision in writing, because the must-haves and the training plan were set before the first interview.

If new hires still leave early, check two things: whether you kept nice-to-have technical requirements as floors, and whether you skipped the behavioral check. Fix the fit check first.

Questions about the 70% rule

If finding the time to run this every week is the hard part, that’s what HireBus is for. Iris, the HireBus AI recruiter, follows up with applicants and interviews them before you do, and HireBus adds RightSeat assessment results to your candidate review. You keep the final interview and the hiring decision.