Field-to-Offer Underwriting
for Serious Investors

Walk a property. Generate a deterministic rehab estimate. Make a conviction-backed offer — in under 3 minutes.

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Free to start · No account required · Kansas City Metro optimized

Field Inspection — 2147 Oak St
3 bed / 2 bath · 1,840 sq ft · Medium Rehab
HIGH CONFIDENCE
Estimated Rehab Cost
$38,400
Range: $34,100 – $42,900
Kitchen — Standard$8,200
Bathrooms ×2$5,600
Flooring — Full Replace$4,800
HVAC / Mechanical$3,200
Exterior + Landscaping$2,900
Cosmetic + Interior Paint$2,400
MAO @ 70%
$164,200
ARV
$290,000
6
Safety Guards
22
USPAP Adjustments
6
Exit Strategies
12
Trade Categories
50
State Multipliers
144
Validation Checks

How It Works

1
Walk the Property
Enter property details and rate condition room by room from your phone — takes 3 minutes standing at the front door.
2
Generate the Estimate
Deterministic rehab estimate with line-item breakdown, confidence score, and regional pricing — computed instantly with zero variance.
3
Make Your Offer
Strategy-specific MAO, seller motivation scoring, 3-move negotiation playbook, and a lender-ready underwriting report.

Systematic vs. Gut Feel

VS
Without a system
✗
Subjective comp weighting
No systematic method for comp age, reliability, or proximity. You pick the comps that confirm the deal you already want to do.
✗
Silent formula errors
One wrong cell reference turns a projected $40K profit into a realized $15K loss. You find out at the closing table.
✗
No circuit breakers
Nothing stops you from wiring earnest money on a deal that was never going to work.
✗
Decision drift
Same deal, different answer depending on the day. No consistent scoring means no consistent buy-box.
With DealLab
✓
Mathematically weighted ARV
Each comp receives a precise weight based on data quality and recency decay. No discretion involved.
✓
Deterministic, auditable logic
Every formula is hard-coded. No floating references, no hidden dependencies, no untracked assumptions. Fully reproducible.
✓
6 safety guards that enforce discipline
Negative profit forces NO-GO. Single-comp, wide-spread, and stale-data conditions auto-cap the score.
✓
Repeatable scoring. No drift.
Same inputs, same outputs. Monday or Friday. First deal or hundredth. A 72 is a 72.

Where Capital Gets Destroyed

Six failure modes account for the majority of underwriting losses. DealLab's engine addresses each one.

Overestimated ARV
Critical
Underscoped Rehab
Critical
Unmodeled Holding Costs
High
Stale or Unvetted Comps
High
Single Exit Assumption
Medium
Confirmation Bias
Medium

DealLab's 6-guard system addresses every primary failure mode

Weighted ARV · Quality-tiered rehab · Holding cost modeling · Recency decay · 6-strategy exit engine · Seller motivation scoring

A Complete Underwriting Workspace

UPDATED
📊
Confidence-Rated ARV Engine
Reliability-weighted comp analysis with 22 USPAP-aligned adjustments, recency decay, and per-comp quality scoring — know which comps move the needle
NEW
🔧
Line-Item Rehab with Quality Tiers
12-trade breakdown with Builder/Standard/Premium material tiers, regional cost multipliers across 50 states, and built-in contingency assumptions
NEW
💲
Offer Intelligence Engine
Strategy-specific offer ranges with seller motivation assessment, 3-move negotiation playbook, and profit sensitivity across 6 exit strategies
✓
6-Guard Deal Scoring
0–100 verdict with automatic guardrails for negative profit, single comp, wide spread, stale data, and high volatility — grade caps enforce discipline when data is weak
📄
PDF Comp Ingestion
Upload Realist, PropertyMachine, or MLS PDFs — AI extracts subject and comp data automatically
✏ LAB REPORT

The Math of Risk Without a System

These are the measurable consequences of underwriting without a system.

23%
Gross flip ROI — lowest since '08
Median flip ROI hit 23.1% in Q3 2025. At that margin, a 10% ARV miss doesn't reduce your profit — it eliminates it.[1]
~88%
Spreadsheets contain errors
Field audits found errors in 88% of spreadsheets examined — formula mistakes that silently corrupt investment decisions.[4]
3min
Property to conviction
Full underwriting — ARV, MAO, profit projection, deal score, exit strategy — delivered in under 3 minutes. Not a summary. A verdict.

[1] ATTOM Data Solutions, "Q3 2025 U.S. Home Flipping Report." [4] Panko, R.R. & Aurigemma, S., "Spreadsheet Errors: What We Know," arXiv:0802.3457, U of Hawai'i.

What Investors Are Saying

"The wholesale scoring engine is the first tool I've seen that actually models end-buyer MAO correctly. It stopped me from overpaying on two deals in the first month."

Active Wholesaler
30+ deals/year, Southeast market

"The 6-guard system caught a stale comp that would have inflated my ARV by $22K. That guardrail alone paid for a year of DealLab."

Buy & Hold Investor
Portfolio holder, Midwest market

"DealLab's STR analysis finally gave me clarity on occupancy viability vs. long-term rental. I compare all my properties through DealLab now."

STR/Airbnb Investor
Multi-property portfolio, Colorado market

Ready to Underwrite Your Next Deal?

Comp-weighted ARV, line-item rehab, strategy-specific offer intelligence, and lender-ready reports — from one workspace.

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