You’re scrolling listings and every one of them looks maybe-good. You can’t fully underwrite fifty properties a week. Nobody can.
So you need a fast filter. Something that kills the obvious losers in ten seconds and lets the real candidates through.
That’s the 1 percent rule. It’s the first gate I put every potential rental through. And it is only a gate.
What the 1 percent rule actually says
Monthly rent should be at least 1% of what the property costs you.
That’s it. Rent divided by cost. If the ratio is at or above 1%, the property earns a closer look. Below it, I move on.
Some people call it the rent to price ratio. Same idea: how much monthly income does each unit of cost buy you?
All-in cost, not list price
Here’s where I differ from how a lot of people use the 1% rule rental property screen. I don’t measure against the purchase price alone. I measure against all-in cost:
- the purchase price
- plus the repairs to make it rent-ready
- plus closing costs
Why? Because a cheap house that needs a new roof, new systems and new floors isn’t cheap. If you leave the repairs out, every distressed property looks like a winner on paper. The 1% rule against all-in cost tells the truth a lot faster.
Why I use it as a screen, not a verdict
The 1% rule was built for speed. It answers one question: is the income in the right neighborhood for the cost? It answers nothing else.
Think of it like a smoke detector. When it goes off, you pay attention. When it’s quiet, you still lock your doors.
My actual process looks like this:
- Screen with the 1% rule against all-in cost. Fails? Out.
- Underwrite the full operating budget. Every line item.
- Check the purchase against roughly the 70% rule. ARV times the rule, minus repairs. See the 70% rule page.
- Stress test the downside. Vacancy, a big repair, a slower lease-up.
- Let the paper make the decision.
The screen saves me hours. The underwrite saves me from mistakes.
What the 1% rule misses
This is the part most articles skip. The rule says nothing about the costs that actually decide whether a rental makes money.
Property taxes
Taxes vary a lot by county and by how the property is classified. In South Carolina, a rental is generally assessed at a different ratio than an owner-occupied legal residence: 6% versus 4%. That changes the bill. The South Carolina property tax page explains it conceptually. Call the county assessor and your CPA for your real numbers.
Insurance
Landlord policies cost differently than homeowner policies, and older properties, roof age and location all move the price. The 1% rule doesn’t know any of that. Get a quote before you offer.
Capital expenses
Roofs, HVAC, water heaters, appliances, flooring, parking surfaces. They don’t hit every month, so they hide. But they come. A property can pass the 1% rule and still be a capex trap if every major system is near the end of its life.
Vacancy and turnover
The rule assumes the rent comes in. Every month. Real buildings have gaps between tenants, plus the paint and cleaning and repairs it takes to turn a unit.
Management
Even if you self-manage, your time has a cost. If you hire a manager, that’s a real line item. More on the trade-offs on self-managing vs. hiring a property manager.
Financing
The 1% rule ignores your loan. The same property can work beautifully with one financing structure and bleed with another. Debt service belongs in the real analysis, and so does a conversation with your lender.
A 1% rule rental property checklist
Before you trust the screen, confirm the inputs:
- Rent is based on what comparable units actually lease for, not the seller’s projection.
- Repairs come from a walk-through with a repair sheet and bids, plus a contingency.
- Closing costs are included in all-in cost.
- For tenant-occupied properties, you’ve seen the actual leases, not just a rent roll.
- You’ve noted the age of the roof and major systems for the full analysis.
Garbage in, garbage out. A screen built on fantasy rent is worse than no screen at all.
Where the rule gets hard to find
In some markets, very few properties pass. People respond by abandoning the rule. I respond by changing how I buy.
That’s why my rental buy box leans toward small multifamily and value-add properties within about an hour of the Midlands. Multiple units under one roof, bought at a discount from owners who need a solution, are where the ratio still shows up. I explain the thinking on the small multifamily investing site.
If you can’t find the 1% rule in your market, don’t lower the bar. Raise your acquisition game: off-market leads, distressed properties, owners who value speed and certainty over top dollar.
The bottom line
The 1 percent rule is a filter. A good one. Run every lead through it against all-in cost, and you’ll stop wasting evenings on listings that were never going to work.
Then do the real work. The full operating budget, the cap rate and cash-on-cash formulas, the debt service check. I lay all of that out on how to analyze a rental property.
Your next step
Bring a property you’re screening into REI Skool, my free community. Post the inputs, not just the conclusion, and let experienced investors poke holes in your numbers before you sign anything. Then head back to the rental property investing overview for the full buy and hold sequence.
Questions people ask
What is the 1% rule for rental property?
It’s a quick screen: monthly rent should be at least 1% of what the property costs you. I use all-in cost, meaning purchase price plus repairs plus closing costs, not just the purchase price.
Is the 1 percent rule still realistic?
In many markets it’s hard to find, which is exactly why it’s useful. It forces you toward discounted, value-add purchases instead of retail listings. Where you can’t find it, the answer is usually to buy better, not to drop the screen.
Does passing the 1% rule mean a rental is a good deal?
No. It only means the property earns a full analysis. Taxes, insurance, capital expenses, vacancy and management can still sink a property that passes. Run the real numbers before you offer.