Tax Smart Real Estate Investors Podcast

Episode: MLRE: The Syndication Mistakes I'd Never Make Again (An Investor Deep Dive)

Date: February 25, 2026
Host: Nathan Sosa (Hall CPA)
Guest: Thomas Castelli (Partner, Hall CPA)

Episode Overview

This episode features a deep-dive interview with Thomas Castelli, partner at Hall CPA and former active real estate syndicator. Thomas shares lessons learned through his real estate investing journey—both successes and regrets—focusing on syndication mistakes, capital raising, underwriting, due diligence, and the pitfalls LPs and GPs encounter. Packed with first-hand insights, the episode is particularly valuable for real estate professionals seeking to avoid costly errors, improve deal performance, and understand the current syndication landscape.

Key Topics & Takeaways

1. Thomas Castelli’s Real Estate Origin Story ([03:25]–[07:59])

• Started with Inspiration: In college, inspired by “Rich Dad, Poor Dad,” Thomas sought real estate wealth, networking at local RIAs and joining a group focused on syndications.
• First LP Experience: Invested in a 42-unit apartment complex in Columbus, Ohio, gaining a “behind-the-scenes” perspective as a ‘pactive’ investor (active LP with GP exposure), directly engaging in meetings, site visits, and deal closure.
• First GP/Principal Deal: Later sourced and closed on an 82-unit property in Jacksonville, FL with mentorship. Managed due diligence through significant challenges, including Hurricane Irma.
• Memorable Moment:

  “This room was filled with more cigarettes than I’ve probably ever seen in my entire life in one room. It was crazy.” — Thomas Castelli [07:04]

2. Syndication Mistakes & Lessons Learned

A. Capital Raising is Everything ([08:51]–[10:41])

• Biggest Lesson: Underestimating how difficult it is to raise capital after finding a deal.

  “You need to have the capital you need to start... The problem is, you need to raise the capital and... raising capital from individual investors can be challenging.” — Thomas Castelli [08:53]

• Advice:
  • Build investor relationships and credibility before hunting for deals.
  • Clearly define your “buy box” and present a real plan, not wishful thinking.
  • “You want to have those relationships pre-established before you find the deal.” — Thomas Castelli [09:24]
• Mistake: Waiting until after a deal is under contract to gather investors, resulting in the need for a crowdfunding partner who diluted the deal.

B. Modern LP/GP Capital Sourcing ([10:51]–[12:06])

• Today’s Syndicators: Should start with their personal network, then partner with experienced, capital-rich individuals.
• Community Leverage: Use specialized investor forums (e.g., PassivePockets.com), podcasts, newsletters, and digital thought leadership to build credibility and attract capital.

C. Underwriting & Due Diligence ([12:06]–[15:38])

• Underwriting Approach:
  • Used mentor-driven templates, but emphasized working closely with property managers for accurate expense/rent projections.
  • Today, recommends leveraging AI tools for faster, more accurate analysis, alongside human expertise.

  • “Know your market, know the submarket you’re in, the types of units, and what you can push rents to.” — Thomas Castelli [14:52]

• Key Question: Why are rents under market—owner’s unwillingness or property deficiencies that can be improved?

D. Real Estate Professional Status & Tax Deductions ([15:38]–[16:11])

• Clarification: Even as a GP, Thomas was not a real estate professional for IRS purposes; his losses were passive and could not be deducted against W-2 income.

E. Natural Disaster Due Diligence ([16:11]–[17:42])

• Hurricane Impact: Due diligence must be redone after major events. Insurance costs and preventive measures are crucial for deals in disaster-prone regions.

  “Insurance is going to be the biggest thing impacted. … What types of preventative things can you put in the property that could hedge against future hurricane damage?” — Thomas Castelli [17:44]

3. Career Pivot: From GP to LP ([18:09]–[23:54])

• Strategic Move: Joined Hall CPA seeking credibility and new investor networks, but the pandemic and group dissolution led him to focus more on LP investments.
• Bad Experience as an LP: Participated in an ATM fund that collapsed into a Ponzi scheme, showing the total loss risk and lack of control LPs face.

  “This ATM machine fund opened my eyes to what a total loss looks like. And I was like, that hurts... It was very painful. … Being an LP, you don’t have any control.” — Thomas Castelli [19:54]

• Fund Management Attempt: Brief stint as a principal in a real estate fund (Dual City Investments), but exited due to conflicts of interest with CPA duties.
• Buy Box Evolution: Now prefers “institutional-esque” sponsors with track records through multiple cycles—institutional experience offers downside protection.

  “I found the more institutional players with more experience to be more safe … because they had the experience of multiple cycles.” — Thomas Castelli [22:15]

4. Tips for New Syndicators and LPs ([23:54]–[25:18])

• For GPs:
  • Partner with experienced operators, even at the cost of equity.
  • Experience and credibility trump theoretical upside—especially for first-timers raising capital or managing through downturns.

    “You can’t underweight experience in this game.” — Thomas Castelli [24:33]

• For LPs:
  • Diligence is critical: Surface-level pitch decks aren’t enough.
  • Understand track records, debt structuring, and how GPs handle rough waters.
  • Risk/return demands should be adjusted based on the GP’s experience and honesty about their track record.

Notable Quotes & Memorable Moments

• On the importance of lining up capital early:

  “Once you find a deal, like there’s a runway, it’s a sprint to... Close. And you need to have the money.” — Thomas Castelli [09:36]

• The perils of “too-good-to-be-true” LP deals:

  “Maybe investing... isn’t as risk free as it looks. … That opened my eyes to what a total loss looks like.” — Thomas Castelli [19:54]

• On hurricane area investment:

  “You have to know your insurance costs, because insurance is going to be the biggest thing impacted.” — Thomas Castelli [17:44]

• Best career move:

  “My buy box as an LP has significantly changed... The more institutional players... I’ve been more comfortable with them because they’ve been through multiple cycles.” — Thomas Castelli [22:10]

Major Takeaways for Investors

• Start capital raising before finding a deal. Relationships and credibility must precede deal sourcing to avoid dilution and last-minute rescues.
• Leverage technology and partnerships. AI and digitized networking communities enhance both underwriting and capital raising.
• Diligence is king: GP or LP. Understand the sponsor’s experience, alignment of interests, insurance costs, and market dynamics.
• Experience trumps theoretical return. For both GPs and LPs, choose track record and proven crisis management over bullish projections.
• LPs: Control is illusionary. Trust, but verify—and heavily weigh track record and fund structure.

Timestamps for Key Segments

• [03:25] – Thomas’s entry into real estate and first syndication
• [08:51] – Mistakes and lessons in capital raising
• [10:51] – Modern approaches to investor sourcing
• [12:06] – Underwriting and due diligence, before and after AI
• [15:38] – Tax lessons and material participation clarification
• [16:11] – Natural disaster due diligence and insurance
• [18:09] – Transition to CPA, LP focus, and lessons from failures
• [22:10] – How LP investment philosophy has evolved
• [24:33] – Why inexperienced GPs need experienced partners

Final Announcements

• Thomas Castelli will join as a new regular co-host of the podcast going forward, bringing both CPA and active investor experience.
• Live Q&As and expanded focus are planned for upcoming episodes.
• Listener engagement: Email questions and topics for future deep-dives.

This episode is essential listening for real estate syndicators seeking actionable wisdom from battle-tested operators—and for LPs eager to avoid the common traps of passive investing.