CREDevSim is a desktop LP/GP waterfall engine for CRE developers, GPs, and analysts. Enter your capital stack, debt structure, and lease-up assumptions and watch IRR, promote, and capital calls solve in real time.
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Maker
📌
I am the creator of CREDevSim. As a CPA who has spent years buried in public accounting, auditing, and real estate development finance, I got tired of the same old problem: massive, fragile Excel models that break the moment you try to run dynamic scenarios, equity waterfalls, or complex debt structures. I wanted something fast, reliable, and purpose-built. This came to reality as I got layoff from my job in August 2025, and I have a newborn around the same time. All these life events pushed me to I built this native desktop simulator designed specifically for commercial real estate underwriting and development while I was job seeking and caring for my baby,
What CREDevSim does:
Deep Financial Engines: Handles complex debt stacks (Senior Debt, Mezzanine, Preferred Equity), construction-to-perm transitions, and rolling cash flow projections.
Dynamic Waterfalls: Automatically models LP/GP splits, hurdles, and exits with split-second precision.
Instant Stress-Testing: Instantly toggle interest rates, construction delays, and exit caps to see how your returns hold up.
Lightning Fast & Private: Runs locally as a standalone desktop app—no worrying about cloud lag or sensitive underwriting data leaking onto public web servers.
I built this because it is the tool I wished I had on my desk. I would love for you to check it out, play with the presets, and let me know what you think. If you are a real estate investor, developer, or analyst, I am here all day to answer questions, hear your feedback, and talk numbers! 🏗️📊
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Would love to see a sensitivity toggle that lets you flex just one assumption at a time, like rent or cap rate, while holding everything else constant. Basically a tornado chart view on top of the live solve would make scenario review way faster for LP meetings.
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Maker
@halilsl6f Hi Halil, thats a great idea. My model does have very similar tools inside that fit what you want. Would love to have you register and try it out. Let me know.
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The split-screen layout with the capital stack on the left and the live IRR/promote outputs solving as you tweak assumptions is genuinely useful for stress-testing deals. Feels built by people who have actually stared at a waterfall model at 11pm.
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Maker
@niyaziktayvflx Hi Niyazi, it is very useful for stress-testing deals. I hope you will register and try it out!
Would love to see a sensitivity toggle that lets you flex just one assumption at a time, like rent or cap rate, while holding everything else constant. Basically a tornado chart view on top of the live solve would make scenario review way faster for LP meetings.
@halilsl6f Hi Halil, thats a great idea. My model does have very similar tools inside that fit what you want. Would love to have you register and try it out. Let me know.
The split-screen layout with the capital stack on the left and the live IRR/promote outputs solving as you tweak assumptions is genuinely useful for stress-testing deals. Feels built by people who have actually stared at a waterfall model at 11pm.
@niyaziktayvflx Hi Niyazi, it is very useful for stress-testing deals. I hope you will register and try it out!
A quick demonstration video for CREDevSim