Chrome side panel

Underwrite a deal the way you'd actually run it.

Paste an address. RE-SIM pulls the comps, builds your rehab scope, totals your cash in, projects the hold, and grades the deal — one step at a time, in a side panel next to whatever you're already doing.

Works on any site, because it never reads the page you're on. You type the address — that's the only thing it sees.

Every part of the underwrite, in one panel.

Comps that fill the form

Rent and sale comps pulled for the address, along with beds, baths, square footage, year built, and the last recorded sale date and price.

Local rental market

ZIP-level average and median asking rent, rent per square foot, days on market, active and new listing counts, rent by bedroom count, and a rent trend going back to 2020.

Three strategies, one model

BRRRR, buy & hold, and flip run through the same engine, so the numbers are actually comparable. The panel reshapes itself around the one you pick.

A rehab scope you build line by line

Add the work and its cost, one line at a time. The total carries into holding costs, ARV, and cash to close without you re-typing it anywhere.

CapEx reserves sized by component age

Roof, HVAC, water heater. Enter how old each one is and the monthly reserve drops straight into the P&L.

A graded verdict you can argue with

A score with the weighted anatomy behind it, plus sliders that let you drag the price or the ARV and watch the grade move in real time.

Seven steps. Each one ends on a number.

Nothing appears before you need it. The panel unfolds as you work, so you're never reading a screen full of boxes you haven't earned yet.

  1. Address

    Ends on: the property, on screen

    Paste it and pick your mode. Auto fills the property details and comps for you; Manual hands you every box.

  2. Strategy

    Ends on: a deal type

    BRRRR, buy & hold, or flip. Everything below reshapes around the answer.

  3. Rehab scope

    Ends on: rehab total

    The work, then the cost, one line at a time.

  4. Acquisition

    Ends on: total cash invested

    Purchase price, closing costs, points, holding.

  5. Exit

    Ends on: profit after refinance, or net profit

    Refinance terms for a BRRRR, sale proceeds for a flip. Buy & hold skips this step entirely, because nothing is refinanced or sold.

  6. Cash flow

    Ends on: monthly cash flow and cash-on-cash

    Mortgage payment, CapEx reserves, a monthly P&L, and an ROI card that measures against the cash you actually put in — not a generic down payment.

  7. Forecast

    Ends on: the curve

    Equity, rent, and cash flow over up to ten years, with appreciation and rent growth pre-filled from the ZIP's own history rather than a made-up 3%.

The verdict

A graded score with the weighted anatomy behind it: what helped, what hurt, and by how much. Target chips tell you what a number would have to be for the deal to work, and the levers let you drag price or ARV and watch the grade move.

You don't have to buy data to use this.

Manual

Type the numbers yourself. Every calculator, every strategy, every projection, the verdict, the bench. Runs entirely on your machine. Free, forever, unlimited.

Auto

Paste the address and let it fill the property details and the comps for you. Ten searches a month for $5.

Deal Bench

Analyzing a property isn't the same as keeping it, so nothing saves itself. Bench the ones worth a second look and the panel keeps up to fifty, newest first, with the month's count of what you looked at versus what you kept. The same house benched as a BRRRR and as a flip are two different decisions, and both get a slot.

Deal Simulator

Play the deal out end to end: negotiate the price, pick your financing, survive the inspection and the rehab surprises, place a tenant, then ride out the first months of ownership. It uses this deal's real numbers, so what goes wrong is what could actually go wrong.

It never reads the page you're on.

RE-SIM asks for no site access at all — no host permissions, no content scripts, nothing watching your tabs. You type an address into the panel and that address is the only thing that ever leaves your machine, and only when you turn on real market data. In manual mode nothing leaves at all.

Start free. Pay only when you want the data pulled for you.

Free

$0

  • Every calculator, unlimited, forever
  • All three strategies: BRRRR, buy & hold, flip
  • Rehab scope builder, mortgage, CapEx reserves, monthly P&L, ROI
  • Ten-year forecast and the graded deal verdict
  • Deal Bench and Deal Simulator
  • Runs entirely on your machine — no network requests at all
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Pro

Most useful

$5/month

  • Everything in Free
  • 10 real-data searches included every month
  • Property details filled in from the address: beds, baths, square footage, year built
  • Rent and sale comps pulled automatically
  • Local ZIP rental market statistics
  • Last recorded sale date and price
  • Extra searches are $0.50 each
  • Hard-capped at 40 searches a month, so a bill can never run away from you
  • Allowance resets on the 1st

Stop guessing. Start underwriting.

Free to install. Free to use. The data is the only thing you'd ever pay for.

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