Griffin Trygg
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I’m Griffin. I work at a small real estate firm in Connecticut, and I build most of the software we run on.

Underwriting, reporting, the weekly meeting, the monthly marketing plan. Almost everything on this page replaced a spreadsheet somebody was stuck updating by hand.

Operations

The stuff our property-management team opens every week. The Monday meeting, the monthly report, the marketing plan.

3 projects

Underwriting & Research

Rent rolls, T12s, the model, the memo. I let Claude read the documents and I make Python do the math.

3 projects

AI Systems

Research and retrieval tools. Click on any claim and you can see where it came from.

4 projects

Products

OnPlane, the company I co-founded. Software for golf clubs and their caddie programs.

1 project

Academic

My senior thesis. Does arts funding in NYC schools move test scores?

1 project

Underwriting & Research

Underwriting

Reads any rent roll or T12 and builds the model. I built it so we could stop paying RedIQ per deal.

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A figure on a tall ladder wringing a cloud of loose pages into a neat ledger below

12 PROJECTS

  1. A figure on a tall ladder wringing a cloud of loose pages into a neat ledger below

    Underwriting & Research

    Underwriting

    Reads any rent roll or T12 and builds the model. I built it so we could stop paying RedIQ per deal.

  2. A house in cross-section, crews on scaffolding tending different rooms, one room lit

    Operations

    Corridor PM Dashboard

    The weekly property meeting in one place: leasing, make-ready, capital projects, delinquency and the owner call.

  3. A circle of people seen from above, all looking at the same single sheet of paper

    Operations

    MOR Dashboard & Investor Portal

    Monthly operating report PDFs go in. A trailing-twelve portfolio view and an investor portal come out.

  4. A figure with a watering can tending a row of apartment buildings that grow like plants

    Operations

    Monthly Marketing Report

    What happened, so what, now what. The monthly marketing plan, written from the occupancy goal backward.

  5. A figure with a clipboard walking a long row of identical apartment buildings

    AI Systems

    Rent Comp Survey

    A public playbook for running a weekly rent comp survey with Claude, ChatGPT or Grok.

  6. A figure on top of a tall stack of paper, looking through a telescope at a row of tiny buildings on the horizon

    Underwriting & Research

    Rent Comp Models

    Teaching myself PyTorch on a real question: can a model predict floorplan rents from the survey archive?

  7. Explorers with headlamps lowering themselves on ropes into a cave shaped like a brain

    AI Systems

    REIT Intelligence

    Four Claude agents that read SEC filings, FRED data and prices and write a weekly REIT brief.

  8. A lighthouse on a cliff, its beam sweeping across a dark sea toward a small boat

    AI Systems

    Apparent Legal

    Legal drafting where every clause Claude writes cites the precedent it came from.

  9. A figure sitting on a tall stack of spreadsheets, chin on hand, one clean page floating up

    Underwriting & Research

    Deal Memo Excel Add-in

    An Excel task pane that turns the underwriting model into a print-ready IC memo.

  10. A surfer riding the inside of a huge wave whose foam is shaped like a brain

    AI Systems

    Claude Training Program

    Eight sessions over four weeks that took the firm from first prompt to building its own tools.

  11. A caddie carrying a golf bag over the crest of a hill at dawn, the flag on the far green

    Products

    OnPlane

    Software for running a golf club's caddie program, and for the golfers the caddies loop for.

  12. A child painting on a giant sheet of paper that turns into a bar chart at the edge

    Academic

    Arts Funding and Student Achievement in NYC

    My senior thesis. Does arts funding move ELA and Math scores in New York City, and does it depend on the borough?