Zack Diener Lending Team · Barrett Financial Group
Real Estate Deal Analyzer
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Analyze Any Deal,
in seconds.

Run the numbers on buy & hold rentals, flips, and investment properties — then share or save your analysis instantly.

Purchase Details
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Utilities, insurance during rehab
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Income
STR income estimate → AirDNA  ·  LTR rent comps → Rentometer
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Annual Expenses
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Default: 1.79% of price
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% of gross rent
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Ready to finance this deal?
Zack can show you how leverage turns a solid cash deal into an exceptional financed one. No obligations — just numbers.
Purchase Details
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Income
STR income estimate → AirDNA  ·  LTR rent comps → Rentometer
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Annual Expenses
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Default: 1.29% of price
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$
%
%
%
Want better rates on this deal?
Zack works with 200+ wholesale lenders to find the best investor rates. Let's see what your real number looks like.
Purchase & Rehab
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Hardest number to nail — be conservative
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Contingency for unforeseen items
Sale
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%
Need flip financing?
Zack can connect you with hard money and fix-and-flip lenders. Fast closes, competitive rates, and no retail markup.
Property & Financing
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Monthly Rental Income
STR income estimate → AirDNA  ·  LTR rent comps → Rentometer
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Annual Expenses
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Required if down payment < 20%
STR vs. LTR Income Mode
Max Offer Calculator

What's the most you can pay and still hit your target return?

Solve for Max Purchase Price
Target Cash-on-Cash:
%
Want Zack to run your deal?
Send these numbers over and get a personalized financing breakdown with real wholesale rates — usually within a few hours.
Investment Summary
Purchase Price
+ Closing Costs
+ Carrying Costs
+ Initial Rehab
Total Cost Basis
Gross Return
Annual rent / cost basis
Net Return
After all expenses
Annual P&L
Gross Rent
− Property Taxes
− Insurance
− HOA
− Mgmt Fee (10%)
− Vacancy (10%)
− Maintenance (5%)
Net Annual Profit
Cash Required to Close
Down Payment
+ Closing Costs
+ Carrying Costs
+ Initial Rehab
Total Cash In
Loan Amount
Monthly P&I Payment
Cash-on-Cash
Annual cash flow / cash in
Net Return
Net profit / cost basis
Annual P&L
Gross Rent
− Mortgage (P&I)
− Property Taxes
− Insurance
− HOA
− Mgmt Fee
− Vacancy
− Maintenance
Annual Cash Flow
Monthly Cash Flow
Projected Profit
After all purchase, rehab & selling costs
Calculating...
Profit Margin
Target: 10–20%+
ROI on Cash In
Profit / out-of-pocket
Deal Breakdown
Purchase Price
+ Closing Costs (Buy)
+ Repairs + Buffer
+ Carrying Costs
Total Cash Required
ARV (Sale Price)
− Commission
− Closing Costs (Sell)
Net Proceeds
Profit Margin
Comp Checklist
LocationSame subdivision or ½ mile radius
RecencySold within last 6 months
SizeWithin 20% of heated sq ft
AgeWithin 10 years of build date
Beds/Baths±1 bed or bath max
TypeSplit vs split, condo vs condo
Cash to Close
Down Payment
+ Closing Costs
+ Renovation
Total Cash In
Loan Amount
Monthly P&I
Annual Debt Service
Cash-on-Cash
Annual cash flow / cash in
Cap Rate
NOI / purchase price
Income & NOI
Annual Gross Income
− Management Fee
− Maintenance/CapEx
− Vacancy
− Utilities
− Insurance
− Taxes
Net Operating Income (NOI)
− Debt Service
Annual Cash Flow
Monthly Cash Flow
1% Rule Test
Monthly rent vs 1% of purchase price
Goal: rent ≥ 1% of purchase price. Hard to hit in most markets.
Deal Scorecard
Cash-on-Cash
Target ≥ 8%
Cap Rate
Target ≥ 6%
Est. IRR (10yr)
Incl. appreciation
DSCR
Target ≥ 1.25
GRM
Gross Rent Multiplier
1% Rule
Rent / price
DSCR Qualification Tier
Lender Tier
0.00.751.01.251.5+
Enter numbers to see tier
STR vs. LTR Side-by-Side
🏠 Long-Term Rental
Monthly Rent
Annual NOI
Annual Cash Flow
Cash-on-Cash
Cap Rate
✈️ Short-Term Rental
Effective Monthly
Annual NOI
Annual Cash Flow
Cash-on-Cash
Cap Rate
Winner:
How to Use This Tool
A quick walkthrough of every tab and feature — takes about 3 minutes to read.
1
Pick your analysis type
Use the four tabs across the top to switch between deal types. Buy & Hold — Cash and Buy & Hold — Financed are for rentals you plan to hold long-term. Flip is for buy-renovate-sell deals. Deal Analyzer is the most powerful — it combines all of the above with a scorecard, DSCR meter, and 10-year projection.
2
Enter your numbers on the left
All inputs live in the left column. Results update in real time as you type — you don't need to hit a Calculate button. Dollar fields format automatically with commas.
💡 Tap the AirDNA or Rentometer buttons next to rent fields to open market data tools in a new tab. Pull a number, come back, and paste it in.
3
Read your results on the right
The right column shows the calculated output for your current inputs — cash flow, NOI, cap rate, CoC return, DSCR, and more. Every metric updates instantly as you adjust any input.
4
Share or save your analysis
Hit Share Link in the top right to copy a URL that encodes all your current inputs — send it to a partner, client, or agent and they'll see your exact numbers. Hit Print / Save PDF to generate a branded one-page leave-behind.
5
Send your deal to Zack
When you're ready for real financing numbers — actual rates, real lender programs, accurate closing costs — hit Send My Deal to Zack. You'll get a personalized breakdown usually within a few hours, no obligation.
1
Cash vs. Financed — which to use?
Use Buy & Hold — Cash if you're paying all cash, or to see the unlevered return baseline of any deal. Use Buy & Hold — Financed for any deal with a mortgage — it adds loan fields and calculates DSCR automatically.
2
Property & Financing inputs
Enter Purchase Price, Down Payment %, Interest Rate, and Loan Term. The tool calculates your monthly P&I, loan amount, and debt service automatically. For DSCR loans, 20–25% down and 7–8% rates are typical starting points in today's market.
⚠️ Closing costs default to 2%. For investment properties, budget 2–3% — DSCR loans often have higher origination and lender fees than conventional.
3
Income inputs
Enter Monthly Rent as your gross scheduled rent — what the unit would rent for at full occupancy. The tool applies your vacancy rate below to arrive at effective gross income. Use the Rentometer button to benchmark your rent estimate against local comps.
4
Annual Expense inputs
Property Taxes — defaults to 1.79% of purchase price (Colorado average). Override with the actual county assessor figure if you have it.

Insurance — landlord policy, not homeowner's. Budget $800–$1,500/yr for a typical SFR.

Mgmt Fee — enter 0 if self-managing, 8–10% if using a PM company.

Vacancy — 5% is aggressive (metro), 8–10% is moderate, 12%+ for rural or seasonal.

Maintenance / CapEx — 5–10% of gross rent is the standard rule of thumb.
5
Reading the results
Key metrics to focus on: Cash-on-Cash Return (annual cash flow ÷ cash invested — target 6–10%+), Cap Rate (NOI ÷ price — target 5–7%+ for most markets), and DSCR (NOI ÷ debt service — must be ≥1.0 to qualify for most DSCR loan programs, ≥1.25 for best pricing).
📊 The Annual P&L breakdown shows every income and expense line item so you can see exactly where your money goes.
1
Acquisition inputs
Enter Purchase Price, Renovation Budget, and Carrying Costs (interest + utilities + taxes for the hold period — typically 3–8% of purchase price for a 6-month flip). Add Closing Costs (Buy) — hard money loans often have higher origination fees, so budget 3–5%.
2
Renovation budget
Enter your base rehab estimate, then set a Variance Buffer (10–20% is standard). The tool adds the buffer to your rehab total automatically. Experienced flippers use 15% as a floor — surprises are not optional.
⚠️ Never underestimate rehab. One missed foundation issue or hidden mold job can eliminate all profit on a thin deal.
3
Sale inputs
Enter your After Repair Value (ARV) — be conservative. Use the Comp Checklist on the right to make sure your comps are apples-to-apples. Add Agent Commission (typically 5–6%) and Closing Costs (Sell).
4
Reading flip results
Focus on Net Profit and Profit Margin %. Most experienced flippers won't touch a deal under 15% margin — it leaves no room for error. The visual profit bar gives you an instant read on deal quality.
💡 The 70% Rule shortcut: Max offer = (ARV × 0.70) − Renovation costs. The tool doesn't enforce this, but it's a useful sanity check.
1
Start with a Scenario Preset
The Moderate Conservative Aggressive buttons at the top auto-populate vacancy, management fee, CapEx, appreciation, and rent growth assumptions. Start with Moderate, then adjust individual fields from there.
2
STR vs. LTR Income Mode
Switch between Long-Term Rental, Short-Term Rental, or Compare Both using the toggle in the income card. In STR mode, enter your estimated nightly rate and expected occupancy % — the tool calculates effective monthly income automatically. The Compare Both view shows a side-by-side breakdown of NOI, cash flow, CoC, and cap rate for each strategy, with a winner callout.
💡 Use the AirDNA button to pull actual STR revenue data for the property's ZIP code before entering your numbers.
3
Deal Scorecard
Six key metrics, color-coded green / amber / red against lender and investor benchmarks: Cash-on-Cash, Cap Rate, IRR (10yr est.), DSCR, GRM, and 1% Rule. A deal with all green cards is a strong buy. Amber means proceed with caution. Red means the numbers need to change before this deal makes sense.
4
DSCR Qualification Tier
This is unique to this tool. The meter shows exactly which DSCR loan tier your deal qualifies for — and what that means for your rate and down payment requirements. Below 0.75 = no lender. 0.75–1.0 = no-ratio products (higher rate, 30%+ down). 1.0–1.25 = standard DSCR. 1.25+ = best pricing tier.
🏦 These tiers reflect real wholesale lender guidelines as of 2025. Zack can match your deal to a specific lender program based on your exact DSCR — hit "Send My Deal to Zack" for that.
5
Max Offer Calculator
Enter your target Cash-on-Cash % and hit Solve →. The tool reverse-engineers the maximum purchase price that still hits your return threshold, given all your current expense and income inputs. Useful for making offers in a negotiation — know your walk-away number before you're at the table.
6
10-Year Projection Chart
Shows cumulative cash flow, equity growth, and property value over a 10-year hold. Adjust Appreciation %/yr and Rent Growth %/yr to stress-test your assumptions. The summary cards at the bottom show total return — cash flow + equity — which is the real story of any long-term rental.
💡 Hover over any dot on the chart to see exact year-by-year values.
Run the deal on all four tabs
Before committing to a strategy, run the same property through Cash, Financed, and Deal Analyzer. A deal that barely works financed might be excellent all-cash — or a flip might yield better IRR than a 10-year hold. The inputs carry over when you switch tabs.
Use conservative inputs first
Start with the Conservative preset on the Deal Analyzer tab. If the deal still pencils conservative, it's a real deal. If you need Aggressive assumptions to make the numbers work, you're hoping, not investing.
The Share Link is your deal file
Every time you refine a deal, hit Share Link and save the URL. It's a permanent snapshot of your analysis — bookmark it, email it to your agent, or send it to Zack. No account needed, no data stored on a server.
DSCR ≠ conventional underwriting
DSCR loans qualify the property, not you. No tax returns, no W-2s, no DTI calculation. The deal qualifies if the rent covers the mortgage. This tool's DSCR meter reflects actual wholesale lender tiers — but rates, LTV, and reserve requirements vary by lender. Always get a real quote before making an offer.
📞 Zack has access to 200+ wholesale lenders. Hit "Send My Deal to Zack" to find out which programs your specific deal qualifies for — usually within a few hours.
Print before you present
Hit Print / Save PDF in the header when you're on the Deal Analyzer tab to generate a clean branded summary. Great for presenting to a partner, handing to an agent, or keeping in a deal file.