Fix and flip deals can be incredibly profitable — but only if you know how to properly budget and manage your rehab costs. Whether you’re a first-time flipper or a seasoned investor, underestimating your project budget can eat into your profits (or worse, turn a deal upside down).
At BE Lending, we’ve funded hundreds of flips and seen how successful investors plan — and where others fall short. This guide will help you approach your next project with a smarter budget strategy.
Start With a Line-Item Budget, Not a Guess
The biggest mistake we see is flippers working off vague estimates. “$50,000 for the rehab” isn’t a plan — it’s potentially a recipe for disaster. Instead, itemize every part of your renovation. That means:
- Flooring
- Paint (interior and exterior)
- Drywall
- Electrical rough & trim
- Plumbing rough & trim
- HVAC (rough & trim)
- Cabinets & countertops
- Windows, doors, and hardware
- Roofing & framing
- Bathrooms (tile, vanities, toilets, showers)
- Lighting fixtures
- Appliances
- Landscaping & curb appeal
- Etc.
Each line should have a materials cost and a labor cost (even if you’re doing the work yourself). Don’t forget dumpsters, permits, and tool rentals. If you are having GC do the work for you and they are getting you an estimate, we still recommend itemizing it out for yourself, and track the costs along the way so you keep a clear numerical picture of the project.
Know Your Scope and Who’s Doing the Work
Rehab costs vary wildly depending on whether you’re acting as the general contractor or hiring out the work. A contractor may charge anywhere from $15 to $250 per square foot, depending on the finishes and the scope of work.
We don’t recommend using square footage as your only guide. Instead, know your scope and build your budget around real estimates from suppliers and trades.
Always Include a Contingency — and Not Just 10%
Most investors slap a 10% buffer on their rehab budget and hope for the best. At B.E Lending, we recommend at least a 20–25% contingency, especially in today’s unpredictable market.
Why? Because surprises happen. Mold behind walls. Sewer line issues. City permits dragging out. Material shortages. You name it. Your budget should assume the worst, but hope for the best.
Budget for Holding Costs and Financing
Beyond rehab, your budget needs to include:
- Loan interest (we suggest planning for 13% annualized)
- Lending fees (typically under $1,500 unless out-of-state)
- Property taxes
- Insurance
- Utilities
- HOA dues (if applicable)
Since our loans are asset-based and reimbursement-based, you’ll front the rehab costs and then draw funds after work is completed. Make sure you have the liquidity to float expenses through each phase of the project as holding costs are not a reimbursable expense.
Plan for Your Exit Based on the Market, Not Emotion
Don’t over-improve the property for a buyer who doesn’t exist. Know your target market. What finishes are they expecting? Granite or quartz? LVP or tile? Spend where it counts — kitchens, baths, curb appeal — but don’t overspend beyond what the market will reward.
Track as You Go
The best flippers treat their project like a business — not a weekend hobby. Use tools like Excel, QuickBooks, or rehab management apps to track every expense. Compare actuals to your original budget and update your numbers weekly. Staying on top of cost creep is key to staying profitable. In today’s day and age, there are numerous AI platforms that can help streamline this process and improve project management, budgeting and planning.
Final Thoughts: Budgeting Is Where Profit Begins
Flipping houses isn’t just about vision — it’s about execution. And that starts with a budget you can trust. At BE Lending, we don’t just fund deals — we help investors succeed by understanding the full picture of what a project will cost and how to finance it the right way.
If you’re planning your next flip and want a lender who knows how the numbers really work, give us a call. Let’s talk through the deal and make sure your numbers line up.