Deep dive
Investor tax strategies
1031 exchanges and Section 121 — educational overview for San Diego investors scaling their portfolio.
Disclaimer: Not tax or legal advice. Consult a CPA and attorney for your situation.
1031 exchange (like-kind)
A 1031 exchange allows qualifying real estate investors to defer capital gains taxes when selling one investment property and reinvesting the proceeds into another "like-kind" property — if strict IRS timelines and rules are followed.
When investors consider a 1031
- Scaling from a duplex to a fourplex or larger asset
- Consolidating several small rentals into one larger property
- Geographic repositioning within San Diego County or out of state
- Deferring gain while continuing the Monopoly loop — sell, improve, reinvest
Section 121 — primary residence exclusion
Section 121 of the Internal Revenue Code may allow homeowners to exclude a portion of capital gains when selling a primary residence they've lived in — subject to ownership and use tests.
Why it matters for house hackers
Many house hackers live in a property for a period, then convert it to a full rental. Understanding Section 121 vs. investment treatment helps you plan the move-up — especially in high-appreciation South Bay markets. The two stack on a former primary residence converted to a rental — see both deep-dives for the math.
Read the full Section 121 guide →
Related: House hacking · ADU value-add · Multifamily · Financing options