
Profit in real estate is made when you buy: not when you sell. While most investors look at a property and see a beautiful kitchen or a fresh coat of paint, pros look at a spreadsheet. They see the numbers that dictate whether a project is a home run or a financial drain.
Underwriting isn't just about math; it’s about risk mitigation and market reality. Most lenders operate from a checklist of rigid rules. At Bosson Capital, we operate from an operator’s mindset. We’ve been in the trenches, managed the renovations, and seen the market shifts firsthand.
If you want to scale your portfolio, you need to underwrite like a pro. This guide breaks down the essential steps to evaluating fix and flip loans and ensuring your next deal is a winner.
Master the Anchor: Establishing Accurate ARV
The After-Repair Value (ARV) is the foundation of your entire deal. If this number is off, every other calculation: from your renovation budget to your loan amount: will be wrong. Professional underwriting requires a disciplined approach to comparable sales.
Don't look for the highest price in the neighborhood; look for the most realistic one. Analyze properties that have sold in the last 90 to 180 days within a half-mile radius. Ensure these "comps" match the square footage, bedroom count, and finish level of your planned project.
Professional investors often use a conservative ARV to build in a safety net. If the deal still works at a lower sale price, you have a solid investment. Overestimating the exit price is one of the most common fix and flip underwriting mistakes: avoid it by staying grounded in recent data.

Scope the Rehab with Precision
Once you have your ARV, you need a detailed scope of work. Novices often use "ballpark" numbers: pros use itemized bids. A $5,000 error in a kitchen renovation might not break a deal, but five such errors across different rooms will.
- Get Itemized Quotes: Require your contractors to break down labor and materials.
- Plan for the Unknown: Always include a 10% to 15% contingency fund for "behind-the-wall" surprises.
- Time is Money: Factor in the timeline. A six-month project has double the holding costs of a three-month project.
Every day a property sits unfinished, your profit erodes. Efficient underwriting accounts for every dollar and every day. This level of detail is exactly what we look for when reviewing investment property loans at Bosson Capital.
Understanding Your Capital: LTC vs. LTV
Professional underwriting requires a deep understanding of leverage. Most investors focus on the interest rate, but the structure of the loan is often more important for cash flow and scale. Two metrics dominate the conversation: Loan-to-Cost (LTC) and Loan-to-Value (LTV).
LTC measures the loan amount against the total cost of the project (purchase + rehab). LTV measures the loan against the final appraised value. A high LTC loan allows you to keep more of your own cash in your pocket: meaning you can fund multiple deals at once.
We prioritize flexibility. Because we understand the investor’s perspective, we offer financing solutions that align with your specific project needs. Whether you need bridge loans for a quick acquisition or long-term capital, understanding these ratios is key to maximizing your return on equity.

Beyond the 70% Rule
You’ve likely heard of the 70% rule: never pay more than 70% of the ARV minus repair costs. While this is a decent "back-of-the-napkin" tool for screening deals, it’s not how pros make final decisions. In competitive markets, the 70% rule might cause you to miss every single deal.
Pros use a more nuanced approach. They calculate the actual Return on Investment (ROI) and Net Profit after all costs: including financing, insurance, utilities, and selling fees.
The Operator’s Checklist for Net Profit:
- Acquisition Costs: Closing fees, title insurance, and inspections.
- Financing Costs: Interest, points, and draw fees for your fix and flip loans.
- Holding Costs: Property taxes, insurance, and utilities during the renovation.
- Selling Costs: Realtor commissions (typically 5-6%) and seller concessions.
By calculating the "bottom line" profit rather than relying on a generic percentage, you can compete more effectively on price while still protecting your margins.

The Secret Ingredient: Direct-to-Decision-Maker Feedback
The best underwriting in the world won't help you if your lender takes three weeks to give you an answer. In the fix and flip world, speed is a competitive advantage. If you can close in days while your competition takes months, you win the deal: even if your offer is lower.
This is the "Operator's Secret." We’ve eliminated the bureaucratic layers found in traditional banks. When you bring a deal to Bosson Capital, you get direct access to the decision-maker.
No waiting for committees: just clear, straightforward feedback. We look at the deal the same way you do. We evaluate the property, the renovation plan, and the exit strategy with a disciplined eye. Our goal isn't just to lend money; it's to ensure the deal is structured for success.
Scale Faster with Disciplined Financing
Underwriting like a pro means being honest with the data. It means walking away from a "pretty" house that has ugly numbers. It also means having a reliable capital partner who can move as fast as the market requires.
Many investors find that private money lenders offer the speed and flexibility that traditional banks simply cannot match. By partnering with a lender that shares your operator’s mindset, you gain more than just capital: you gain a second set of professional eyes on every deal.

Ready to Execute Your Next Deal?
Don't let a great opportunity slip away because of slow financing. If you have a property that needs funding, bring us the numbers. We’ll provide the fast, flexible capital you need to scale your business.
Contact Bosson Capital today to discuss your next project. Let’s get to work: no delays, just clear answers.
