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Start here · The flagship guide

The STR Entity Foundation Guide

Why 'just form an LLC' is the wrong start, and how separating the property, the operations, and the owner gives you one frame for liability, taxes, financing, and a growing portfolio.

New to Builders Finance? Start here. This guide introduces the whole Entity Structure system, and links to every supporting guide you'll need as you put it in place.

Reading time14 min
Edition2026.1
AuthorMatt Nunn
Living reference — kept current as rules, tools, and operating practices change.
What it covers
  • The three-separations frame
  • What each separation protects
  • Right-sizing structure to your stage
  • Where every decision fits
Read the Foundation Guide →

Start with the flagship above — everything else in Entity Structure supports it.

Supporting guides

The guides, in order

In dependency order — Separate the property, the operations, and the owner.

01
Property

The Single-Member LLC & Disregarded Entity

How an LLC holds the asset — and what 'disregarded entity' means for taxes.

02
Owner

Insurance vs. the LLC — Two Layers

Insurance pays claims; the LLC contains what's left. You want both.

03
Operations

The Management-Entity Layout

When the business warrants its own entity, and how S-corp fits.

04
Portfolio

Structuring a Growing Portfolio

Series LLC, multiple LLCs, or a holding company.

Browse all Entity Structure guides chronologically →
Decision guides

When there's a real choice

Judgment calls, not how-tos — each weighs the options for your situation.

Decision Guide

Should I Put My STR in an LLC?

What an LLC does and doesn't protect, and whether it's worth it for your stage.

Work through it →
Decision Guide

Should I Elect S-Corp Status?

Only for substantial-services STRs — how the SE-tax math works and when it backfires.

Work through it →
Templates & tools

The tools that do the most

The guide teaches; the tool implements.

Tool

Entity Comparison Matrix

Sole prop vs. LLC vs. multi-member vs. S-corp across liability, taxes, cost.

Pairs · Put it in an LLC?
Checklist

Pre-Formation Checklist

Lender check, state fees, insurance-first, dedicated account.

Pairs · Put it in an LLC?
The Informed Operator

Stay ahead of the changes.

A weekly email on the financial side of short-term rentals — what changed, why it matters, and what owners should understand. Plus the STR Tax Mistake Checklist.

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