Key takeaways
- Underwrite every deal to a stressed scenario, not the listing pro forma.
- Reserve at least 6 months of PITI per property — not optional.
- Treat tenant screening as the single highest-ROI activity.
- Track real cash-on-cash, not appreciation paper gains.
- Refinance only when proceeds beat opportunity cost of leverage.
Core concepts
Pro forma discipline
Real underwriting uses trailing 12-month actuals, not seller-supplied figures. Adjust vacancy upward, repairs to a per-unit standard, and management to 8–10% even if self-managed.
Operational leverage
Each marginal property should compound systems — leases, screening criteria, vendor lists — rather than rebuild them from scratch.
Capital stack discipline
Match loan term to hold period. Avoid short-term financing for long-term assets unless a clear refinance event is contracted.
Tenant economics
A single bad tenant typically destroys 18–24 months of cash flow. Screening criteria, not unit features, drive returns.
Step-by-step framework
- 1Set per-property minimums: cash-on-cash, DSCR, reserves, and worst-case occupancy.
- 2Build an underwriting template and use it for every offer without exception.
- 3Codify tenant criteria in writing and apply identically to every applicant.
- 4Schedule annual rent reviews tied to market comps, not gut feel.
- 5Run a portfolio stress test every 6 months.
- 6Document every system as you scale — leases, vendors, capex schedules.
Common mistakes to avoid
- Underwriting to seller pro forma and skipping a stressed scenario.
- Skimping on reserves to close a deal that 'pencils tight.'
- Self-managing without time, then losing two months chasing rent.
- Holding negative cash flow on the hope of appreciation.
Frequently asked questions
How many properties should I own before professionalizing?
By the fourth property, systems and a property manager almost always pay for themselves in vacancy reduction and time savings.
What cash-on-cash return should I target?
8–12% in cash-flow markets, 4–7% in appreciation markets. Below 4% requires a clear forced-equity or appreciation thesis.
Should I use an LLC?
Yes for liability isolation once you exceed 2 properties or your equity exceeds 6 figures, but the structure should not slow acquisitions.
How do I know when to sell?
When return-on-equity drops below the return you could earn redeploying the equity elsewhere — typically when equity exceeds 50% of current value.
Action checklist
- ☐Underwriting template completed for every offer.
- ☐Reserves >= 6 months PITI per property.
- ☐Tenant screening criteria documented and applied uniformly.
- ☐Lease reviewed by attorney in each operating state.
- ☐Insurance reviewed annually for replacement cost coverage.
- ☐Capex sinking fund funded for roof, HVAC, plumbing.
- ☐Annual rent review against current market comps.
- ☐Portfolio stress test run every 6 months.