The 10-Unit Rental Portfolio: Professional Structure
Ten doors is where the portfolio becomes a small business, not a side hustle. Structural decisions from year one — LLC design, banking, bookkeeping — start compounding as either scaffolding or friction.
Holding-company structure
By 10 units, most operators have a two-tier structure: a holding LLC that owns the property-level LLCs. This isolates liability at the property level, centralizes ownership at the holding level, and simplifies estate planning. Series LLCs (in states that allow them — TX, DE, NV, IL and others) achieve similar isolation with less filing overhead.
Financing at scale
DSCR loans are the standard tool for adds. Portfolio loans are the tool for consolidation and refi. Cash-out refi on appreciated properties funds the next acquisition — this is the classic BRRRR playbook at scale. Rate risk: laddering loans across different maturity years prevents a single refi window from wrecking the portfolio.
Insurance master policy
10+ properties usually qualifies for a master landlord policy that covers the whole portfolio under one umbrella at lower total cost than individual DP-3 policies. Requires broker with commercial real estate experience. Umbrella coverage moves from $2M to $5M+ as portfolio value grows.
Common mistakes at 10 units
- ×Not restructuring the LLC stack until forced to by an incident
- ×Trying to self-manage a scattered portfolio (works only if geographically concentrated)
- ×Underinsuring because "nothing has ever happened" — one uncovered lawsuit wipes years of gains
- ×Refusing to sell dogs — every portfolio has 1-2 properties that should be culled
What changes at the next scale
From 10 to 25 units, the operational muscle either scales via a real team (in-house PM, dedicated bookkeeper, virtual assistant) or breaks. Most 25-unit operators no longer answer maintenance calls themselves.
Next: 25 unit guide →Track a 10-unit portfolio with real numbers
The Pro Portfolio Tracker rolls up every property, auto-revalues them against local price data, and flags DSCR risk + equity milestones. At the 10-unit scale you should already be tracking your portfolio somewhere — this is the projection-native option most bookkeeping tools don’t cover.
Playbook informed by operator experience across scales. Every portfolio is different; treat this as one perspective, not the definitive answer for your situation.