The Rental Property Investing Guide
Clear, no-fluff guides to underwriting rental property the way experienced investors do. Learn the metrics that decide a deal, the expense assumptions that quietly sink cash flow, and the screening rules worth actually using.
62 guides across 9 topics.
Underwriting Basics
Start here — how to turn a listing into numbers you can trust.
5 minutes
The whole process, once you know which four input groups matter.
How to Analyze a Rental Property in 5 Minutes
The four input groups, NOI, and the two assumptions that quietly sink most deals — a repeatable five-minute process.
Read the guide →$15,004
NOI on the $240,000 example — everything the property earns before the bank.
What Is NOI? Net Operating Income Explained
Effective gross income minus operating expenses. What belongs in NOI, what never does, and why the mortgage stays out of it.
Read the guide →10% → sign flip
A 10% rent error turns +$995 a year into −$945.
How to Estimate Rent for a Rental Property
Where to pull rent comps, how to adjust them, and the sanity check that catches an over-optimistic rent before it costs you.
Read the guide →1 phone call
What it takes to learn whether a sale triggers a tax reassessment.
The Rental Property Due Diligence Checklist
What to verify between accepted offer and closing, grouped by the pro-forma assumption each item is there to protect.
Read the guide →+$266 → −$194
The same deal per month, once vacancy, maintenance, CapEx and management are added.
9 Mistakes That Make a Bad Rental Deal Look Good
Omitted CapEx, zero vacancy, free management, forgotten closing costs. The nine specific places pro formas go wrong.
Read the guide →14 lines
Everything a rental pro forma needs, in the order that stops you double-counting.
How to Build a Rental Property Pro Forma
The line items, the order they belong in, and the difference between a pro forma that informs and one that sells.
Read the guide →8% low = $15k
What a modest ARV miss costs on a deal bought at the 70% line.
How to Estimate ARV (After-Repair Value)
Which comps qualify, how to adjust them, and how to check an ARV before it decides your maximum offer.
Read the guide →15–20%
Contingency — inside the budget, not bolted on after you have committed.
How to Budget a Rental Property Rehab
Scope before numbers, a contingency that lives inside the budget, and the four places rehab estimates reliably go wrong.
Read the guide →Return Metrics
The numbers that decide whether a deal is worth your capital.
6.25% vs 1.5%
Cap rate and cash-on-cash on the same property, on the same day.
Cap Rate vs Cash-on-Cash Return
They answer completely different questions. What each one tells you, how to calculate them, and which to use when.
Read the guide →6.25% vs 7.78%
Cap rate under the mortgage constant. That is negative leverage.
What Is a Good Cap Rate for a Rental Property?
Typical ranges by market and asset class, why a high cap rate is usually a warning, and the spread that actually matters.
Read the guide →4–8%
The realistic band for a stabilised, financed rental bought at market.
What Is a Good Cash-on-Cash Return?
Realistic benchmarks, how leverage flatters the number, and why your floor should be tied to what cash earns elsewhere.
Read the guide →1.5% or 15.1%
The same deal in the same year — depending which of the five ROIs you quote.
What Is a Good ROI on a Rental Property?
Five different numbers get called ROI. Which one you're being quoted, what each is worth, and realistic targets.
Read the guide →9.5
Price ÷ gross annual rent on the $240,000 example. Blind to every expense.
Gross Rent Multiplier (GRM): What It Is and How to Use It
Price ÷ gross annual rent. A useful triage number that ignores expenses entirely — and what that costs you.
Read the guide →−1% to 13.7%
The IRR range on one deal, moving only the appreciation assumption.
IRR for Rental Property: What It Means and When to Trust It
The one metric that accounts for time and the sale. How it is computed, and the two assumptions that inflate it.
Read the guide →$995 vs $7,200
Year-one cash flow against year-one appreciation. One is measured, one is forecast.
Cash Flow vs Appreciation: Which Should You Buy For?
What each one actually pays for, the risk each carries, and how to model an appreciation bet without lying to yourself.
Read the guide →0–100
Six weighted factors, every one of them published. No black box.
How the DealQuanta Score Is Calculated
A transparent 0–100 grade from six weighted factors — cash-on-cash, DSCR, cap rate, cash flow, IRR over the hold period and the 1% rule.
Read the guide →$200/door
The benchmark everyone quotes — and why it answers the wrong question.
How Much Cash Flow Is Good for a Rental Property?
Why “$200 a door” is the wrong frame, realistic benchmarks after all expenses, and the two numbers that matter more.
Read the guide →14.7% → 10.1%
ROE from year 1 to year 15 on one property. It declines — slowly.
Return on Equity: When Capital Stops Working
The metric that updates when your equity does — and an honest version of the “your equity is lazy” argument.
Read the guide →91.0%
Break-even occupancy on the $240,000 example — four points of cushion.
Break-Even Occupancy and the Break-Even Ratio
The occupancy at which cash flow hits zero, and how many points of cushion your deal actually has.
Read the guide →4 variables
Rent, vacancy, rate, exit. Every deal has a breaking point in each.
How to Stress-Test a Rental Property Deal
Which four variables to flex, the value at which each one breaks the deal, and what to do with the answer.
Read the guide →Expenses & Assumptions
Where deals are actually won and lost. Every optimistic pro forma is optimistic right here.
40.5% vs 51.4%
One pro forma with a 5% CapEx plug, then with a real reserve.
The 50% Rule for Rental Properties
Half of gross rent goes to operating expenses. A blunt check that catches a fantasy pro forma in about ten seconds.
Read the guide →3.9%
Structural vacancy for a 24-month tenancy with 30 days to re-lease.
What Vacancy Rate Should You Use?
How to derive a vacancy rate from turnover and days-on-market instead of copying 5% because everyone else does.
Read the guide →$335/month
Component-based CapEx on an ordinary rental. The usual plug is $105.
CapEx Reserves: How Much to Budget for a Rental
Component-life budgeting versus a flat percentage of rent — and why CapEx and maintenance are two different lines.
Read the guide →8% → 12%
The all-in cost of an 8% contract once leasing and renewal fees are counted.
Property Management Fees: What They Cost and When They're Worth It
The 8–12% monthly fee plus the ones nobody quotes — and why you model it even when you plan to self-manage.
Read the guide →37.3%
OER on the $240,000 example. Under 30% usually means something is missing.
Operating Expense Ratio (OER) for Rentals
Operating expenses ÷ effective gross income. The one ratio that audits the expense half of any pro forma.
Read the guide →12%
How much leaving closing costs out overstates your cash-on-cash return.
Closing Costs on a Rental Property: What to Budget
What to budget, why they never touch cap rate, and why leaving them out overstates cash-on-cash return every time.
Read the guide →$500 = 0.21%
What a $500 insurance miss costs in cap rate on a $240,000 property.
Landlord Insurance: Cost, Coverage and the NOI Hit
What the policy actually covers, why premiums keep climbing, and what a $500 miss does to your cap rate.
Read the guide →1.25% → 1.6%
A reassessment of that size takes DSCR from 1.07 to 1.01.
Property Taxes on a Rental: Reassessment and Appeals
Why the seller’s tax bill is not your tax bill, how reassessment works, and how to appeal an assessment that is too high.
Read the guide →$5,025
One turnover on a $2,100 rental. That is 2.4 months of rent.
What Tenant Turnover Actually Costs
Vacancy, make-ready, leasing fee and lost rent add up to about 2.4 months of rent — and change the retention math.
Read the guide →9 months
Payback on submetering water at $900 a unit. Few levers are faster.
Who Pays the Utilities? Submetering and RUBS
What owner-paid utilities really cost in cap rate, and when submetering or RUBS pays for itself.
Read the guide →Financing & Risk
What lenders check — and what keeps a deal safe when things go wrong.
1.25
The classic lender minimum — and thinner cover than most investors assume.
What Is a Good DSCR for a Rental Property?
The debt service coverage ratio explained: how to calculate it, the 1.25 lender benchmark, and how to improve a thin margin.
Read the guide →1.07 → 0.97
What one extra point of rate does to the same property's coverage.
DSCR Loan vs Conventional: Which for a Rental?
One underwrites you, the other underwrites the property. Qualification, rates and cost, compared side by side.
Read the guide →0.1% → 6.1%
Cash-on-cash as the down payment rises from 20% to all cash. It goes up.
How Much Down Payment for a Rental Property?
Typical requirements, and the trade-off nobody states plainly: every extra dollar down buys safety by giving up return.
Read the guide →7.43%
The rate at which this deal's cash flow reaches exactly zero.
How Interest Rates Change a Rental Deal
What one point of rate actually costs in monthly cash flow, DSCR and cash-on-cash — worked through on a real example.
Read the guide →9.9%
The true annual cost of the equity pulled out, paid in surrendered cash flow.
Cash-Out Refinance on a Rental: Running the Numbers
The LTV limit, the new payment, and the honest accounting of what the equity you pull out costs you every month.
Read the guide →86% interest
Share of a year-one payment on a 6.75% 30-year loan that is not principal.
How Amortization Builds Equity on a Rental
Why year one is 86% interest, when the split finally crosses over, and whether paying extra is a good use of investor capital.
Read the guide →8.34 ÷ 7.78
Debt yield over mortgage constant — and that quotient is your DSCR.
Mortgage Constant and Debt Yield Explained
The two numbers behind DSCR, why debt yield ignores rates entirely, and how the constant decides whether leverage helps you.
Read the guide →$23,000
A realistic first-year reserve for one $240,000 rental. Most people hold less.
How Much Cash Reserve a Rental Property Needs
The lender minimum, the practical number, and why a properly reserved deal has a lower cash-on-cash return than advertised.
Read the guide →1.03 vs 1.09
Coverage under a seller second versus a full seller carry on the same price.
Seller Financing: How to Analyze the Deal
Full carry versus a seller second, what each does to DSCR and cash in, and the balloon that decides whether it works.
Read the guide →Operations & Tenants
The part that happens after closing — and where a good deal is kept or lost.
$60 vs $12,000
What screening costs against what a single bad tenancy costs.
How to Screen a Tenant
Written criteria applied identically to everyone, the four verifications that matter, and what one bad tenant actually costs.
Read the guide →8.4 years
How long a $50 rent increase takes to repay one turnover it triggered.
How Much Should You Raise the Rent?
The retention math that caps your increase, why a $50 raise can cost $5,000, and how to close a gap without a turnover.
Read the guide →4% → 12%
The cap rate span from Class A to Class D. Every point of it is paying for something.
Class A, B, C and D Properties Explained
What each class means in age, rent level and condition — and the cap rate, vacancy and workload that come with it.
Read the guide →Strategies
The same engine, pointed at different plays — BRRRR, house hacking, STR, small multi.
$11k or $1,157
Capital back out, or cash flow. At current rates, rarely both.
The BRRRR Method: How to Run the Numbers
ARV, rehab, the 75% refinance constraint and capital left in — plus why cash-on-cash return stops working at zero.
Read the guide →$246 vs $604
Saved per month while you live there; lost per month once you move out.
House Hacking: How to Analyze the Deal
Analyze it twice — as the place you live now, and as the rental it becomes when you move out. The second view decides.
Read the guide →+61% / −35%
STR gross revenue against STR net operating income, fully managed.
Short-Term vs Long-Term Rental: Comparing the Numbers
Why STR gross revenue is not comparable to rent, what the expense line really looks like, and how to compare fairly.
Read the guide →$67,000
Value created by a $75 rent increase on a 6-unit at a 7% cap rate.
Single-Family vs Multi-Family: Which Analyzes Better?
Comps versus income valuation, vacancy concentration, expense ratios and financing — and what each is actually good at.
Read the guide →9 levers
Ranked by payback. The first two cost nothing and are usually skipped.
How to Increase NOI on a Rental Property
Nine levers ranked by payback, from a free tax appeal to adding a bedroom — with what each one is worth in value.
Read the guide →+1.25 points
The cap-rate gain that has to cover management, travel and not knowing the street.
Investing in Rental Property Out of State
The cap-rate arbitrage, what remote ownership genuinely costs, and the turnkey red flags worth walking away from.
Read the guide →1.9 points
Of cap rate consumed by HOA dues on a typical condo rental.
Should You Buy a Condo as a Rental? The HOA Math
What dues cost you in cap rate, the rental cap that can end the business overnight, and how to read a reserve study.
Read the guide →Screening Rules
Fast filters for triaging a pipeline — and where they break down.
1%
Monthly rent as a share of price. A 10-second filter that knows no expenses.
The 1% Rule — and Why It’s Not Enough
A useful 10-second filter that has talked people into bad deals and out of good ones. How it works and what to check instead.
Read the guide →10.5% → 7.7%
A textbook 2% property's cap rate, before and after collections and turnover.
The 2% Rule: Does It Still Exist?
Why 2% properties largely vanished, what a listing that still hits it usually signals, and what to screen on instead.
Read the guide →70% of ARV
Minus repairs. And the 30% is not profit — it is costs first, profit last.
The 70% Rule for Flips and BRRRR
Max offer = 70% of ARV − repairs. How it sets your ceiling, and the two estimates that decide whether the margin is real.
Read the guide →7 rules
Ranked by how much weight each one can actually carry.
Real Estate Rules of Thumb, Ranked by How Much You Can Trust Them
The 1%, 2%, 50%, 70% and 5% rules side by side — what each screens for and how much weight it can actually carry.
Read the guide →Selling & Exit
Most of the return arrives on the last day. These are the numbers that decide how much of it you keep.
6–9%
The transaction cost any “better use of the capital” has to beat first.
When to Sell a Rental Property
The return-on-equity trigger, the transaction-cost hurdle it must clear, and three alternatives to price before you list.
Read the guide →$16,800
Selling costs on a $240,000 property — more than five years of principal paydown.
What It Costs to Sell a Rental Property
Commission, transfer tax, concessions and repairs — itemised, and measured against the equity you actually built.
Read the guide →0.5 pt = 4.6%
Half a point of exit cap expansion, measured in lost IRR.
Exit Cap Rate: The Assumption That Decides Your IRR
How to choose an exit cap honestly, and why half a point of expansion costs more IRR than five years of good management.
Read the guide →45 and 180
Days to identify, then to close. Neither deadline moves for any reason.
The 1031 Exchange: Timeline, Rules and Numbers
The two deadlines, the equity and debt replacement test, and what boot costs you. Mechanics, not tax advice.
Read the guide →27.5 years
The residential schedule. Land is excluded, which is why basis matters.
How Depreciation Works on a Rental Property
The 27.5-year schedule, why land is excluded, how it creates a paper loss — and the recapture waiting at the sale.
Read the guide →Choosing Your Tools
Honest comparisons of the analysis software itself — including where ours isn't the right pick.
2 different jobs
A personal calculator and a client deliverable are not the same product.
DealQuanta vs DealCheck: An Honest Comparison
They're built around different jobs — the affordable all-rounder vs the client-deliverable specialist. How to pick, without the spin.
Read the guide →5 tools
Matched to the job — including where ours is not the right pick.
Best Rental Analysis Software for Agents (2026)
DealQuanta, DealCheck, Stessa, BiggerPockets and the trusty spreadsheet — matched to the job, with the trade-offs stated plainly.
Read the guide →4 failure modes
Version forking, drifting conventions, presentation, and lost memory.
Rental Property Spreadsheet vs Software
What a spreadsheet genuinely does better, the four ways it fails at scale, and an honest case for staying with it.
Read the guide →3 numbers
Chosen for the reader in front of you, not the twelve you calculated.
How to Present a Rental Deal to a Client or Partner
What to lead with, which assumptions to expose on purpose, and the section that decides whether they trust the whole thing.
Read the guide →Prefer to just run numbers? Try the free single-metric calculators →
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