What is a Series LLC? (Real Estate Investor Guide)

Buying 10 rental properties? You could pay for 10 separate LLCs (expensive), or you could set up just one “Series LLC.” It is the secret weapon for scaling a real estate portfolio without going broke on filing fees.

BMT Legal Research Team BMT Legal Research Team · 📅 Jan 2026 · ⏱️ 5 min read · LEGAL › ADVANCED
Structure
Parent/Child
Unlimited CellsScale
Cost
1 Fee
For All SeriesSave
Risk
Isolated
One Lawsuit LimitSafe

The “Honeycomb” Structure

Think of a Series LLC like a honeycomb. The main structure holds everything together, but each cell (Series) is sealed off from the others. Honey (assets) in one cell cannot leak into another.

Feature Traditional LLC Series LLC
Quantity 1 LLC per Property 1 Parent, Many Series
Filing Fees Pay 10 Times Pay 1 Time
Protection Good Excellent (Isolated)
Complexity Low High (Banks hate it)
The “Firewall” Effect
If a tenant slips and sues “Series A” (Property A), the judge can only touch the assets inside Series A. Properties in Series B and the Parent LLC are safe. It prevents a “Domino Effect.”
Cost to Own 5 Properties
5 Separate LLCs (Texas) $1,500
$300 filing fee x 5.
1 Series LLC (Texas) $300
One fee covers all.
Annual Reports 1 vs 5
Less paperwork forever.
GoalBest Choice
1 RentalTraditional LLC
3+ RentalsSeries LLC

Not All States Allow This

This is a relatively new legal invention. Only about 20 states recognize Series LLCs. The most popular ones for investors are:

  • Delaware: The gold standard. Courts understand it well.
  • Texas: Very popular because it’s cheap ($300).
  • Wyoming: Great for privacy (Anonymous ownership).
  • Nevada: Good protection, but expensive fees.

Warning: California Investors

California does not form Series LLCs, but if you register one there, the Franchise Tax Board (FTB) might charge you the $800 annual tax for EACH series.
If you have 1 Parent + 9 Series, California might send you a bill for $8,000. Be extremely careful.

The Hidden Downside: Banking

Lawyers love Series LLCs. Bankers hate them.

When you walk into Chase or Bank of America and say, “I want to open a checking account for Series B of my Master LLC,” the teller will look at you like you are speaking alien.
Action Step: Before you form one, call your local bank and ask: “Do you support opening accounts for individual cells of a Series LLC?” If they say no, find another bank first.

Frequently Asked Questions

Does each Series need its own EIN?
Yes. To maintain the legal separation, each Series acts like a separate company. It needs its own EIN (free from IRS) and its own bank account. Never mix the money!
Can I convert my old LLC?
Sometimes. Some states allow you to “convert” a Regular LLC into a Series LLC. Others require you to form a new one and transfer the deeds. Ask a CPA.