You got three bids. Picked the middle one. Contractor said $38,000, eight weeks. Six weeks in, he calls. Demo found moisture damage behind the walls, joists need sistering, and the HVAC needs a full replacement. New number: $54,200.
The deal still works. Barely. But you’re not sure, because your rehab budget lives in a spreadsheet you built 14 months ago, your receipts are scattered across three email threads and a folder on your desktop, and the last time you updated the actual column was three weeks ago.
That’s not a contractor problem. That’s a tracking problem.
Why Rehab Costs Keep Coming in Higher Than Expected in 2026
Construction costs rose roughly 5% year over year through early 2026, with sharper spikes in steel and aluminum, both up 20 to 30%. The labor side is the bigger pressure point. General contractors across landlord-friendly markets like Birmingham, Atlanta, and Tampa are stretched thin. Labor shortages have widened the gap between what a bid says and what a project actually costs by the time the final invoice lands.
The 70% rule still works as a starting point for BRRR underwriting, but the variance between estimated and actual rehab has widened. Investors who budgeted 10% contingency a few years ago are now budgeting 15 to 20%. That shift in cushion has a direct impact on your refinance math, your after-repair value target, and whether you recycle capital at the end of the deal or leave money trapped.
If you don’t have a system that tracks every dollar in against every dollar budgeted, in real time, you are flying blind at the worst possible time.
The Spreadsheet Problem Gets Worse at Scale
One deal in a spreadsheet is manageable. Two deals running at once and you start losing track of which tab is current. Three deals at once and you have contractor invoices in your email, receipts on your phone, change orders in a text thread, and a spreadsheet that hasn’t been updated since last Tuesday.
The failure points compound quickly. Every new expense requires you to manually open the file, find the right tab, locate the right row, and enter the amount correctly. You get an invoice at 7pm, you don’t update the sheet until the weekend, and by then you’ve forgotten what cost category it belongs to. There’s no running budget vs. actual view refreshing in the background. You have to manually calculate what you’ve spent across a dozen line items to know where you stand. Nobody tells you when you’ve crossed 80% of your rehab budget with two weeks of work still left. You find out when you sit down and add it up. And the tracker lives completely disconnected from your refinance analysis, so every time a cost changes, you’re updating two places and hoping you got both right.
At one property this is annoying. At three or four, it’s a liability that can kill the capital velocity your BRRR model depends on.
How DoorVault Tracks Budget vs. Actual for Every BRRR Deal
DoorVault’s BRRR Pipeline tracks every deal from purchase through rehab, rent, refinance, and repeat. The rehab phase is not a notes field or a static number. It’s a live tracker with real data behind it, connected to every transaction coming into the property.
Here’s what that looks like in practice.
When a contractor sends an invoice, you forward the email to your Knox inbox. Knox reads the invoice, extracts the vendor, amount, date, and description, creates the transaction, and files the document to the correct property automatically. When you photograph a receipt on the jobsite, Knox extracts the vendor, amount, and category and creates the transaction in roughly ten seconds. Every expense tagged to a BRRR rehab property rolls up against the budget you set at acquisition. Knox surfaces the running budget vs. actual in real time. When actual costs approach the budget ceiling, Knox flags it as an anomaly before you’re blindsided.
This is the same Knox AI engine that processes 72+ document types across your entire portfolio. The same one that reads your PM statements, insurance renewals, tax bills, closing disclosures, lease agreements, and anything else you forward, upload, or sync from cloud storage. For rehab tracking specifically, Knox turns every contractor invoice and jobsite receipt into structured data you can act on.
Knox also tracks your ARV estimate against your equity position as the rehab progresses. By the time you’re ready to refinance, you have documented evidence of every dollar spent, every invoice filed, and the full equity picture. That’s exactly what lenders want to see for a BRRR cash-out refinance, and it’s available without any scrambling to reconstruct costs from memory.
For a deeper look at how this plays out across the full BRRR cycle, read The BRRR Operational Nightmare Nobody Talks About (And How to Fix It).
Track your rehab budget in real time. Try the live demo to see Knox process a real contractor invoice.
The Refinance Read Requires Real Numbers
The BRRR model lives and dies on one number being accurate at refinance: your equity position. Most DSCR lenders will do a cash-out refi at 75% LTV. If your ARV comes in lower than expected, or your rehab ran over, or both, the amount you pull out shrinks. Leave more than $10,000 to $15,000 trapped in a deal and your capital velocity drops. The next deal doesn’t happen on schedule, and the whole model slows down.
DoorVault’s Equity Tracker shows real-time LTV, DSCR, and equity position per property. As your rehab closes out and the property stabilizes with a tenant, you can run refinance scenarios directly in the platform. What’s my projected cash-out if the appraisal comes in at $145,000? At $155,000? Knox surfaces the numbers before you order the appraisal. You’re going into the conversation with your lender already knowing whether the deal works.
That’s the difference between guessing and having data. In 2026, with rehab costs where they are and margins thinner than they were three years ago, that gap matters.
For a full walkthrough of BRRR deal analysis before you even make an offer, read How I Analyze a BRRR Deal in 5 Minutes.
What Happens After the Rehab Closes
Once the property is rented, DoorVault keeps working. Knox watches for anomalies in income and expenses, monitors your mortgage position, processes your PM statements, and continues handling every document that comes through your Knox inbox. Forward any property-related email, PM statements, insurance renewals, tax bills, inspection notices, lease documents, anything, and Knox processes it, files it, and creates the transaction automatically.
Your rehab data becomes part of the permanent property record. When your CPA asks what you spent, it’s already categorized and documented. When you’re ready to sell or do a 1031 exchange, your cost basis is accurate because every capital improvement was tracked at the time it happened. No reconstruction, no estimates, no guessing.
That’s what running the entire investor side of rental ownership on autopilot actually means. The rehab tracking is one piece of it. The rest of the platform, from deal underwriting to portfolio analytics to loan tracking to professional portals for your CPA and insurance broker, handles everything else. You only look at your data when you want to, not because you have to.
Want to see how it handles a BRRR deal from purchase to refinance? Start free. 2 properties. No credit card. Create your account
Frequently Asked Questions
How does DoorVault track rehab costs for BRRR deals?
DoorVault’s BRRR Pipeline tracks every rehab expense against the budget set at acquisition. Forward contractor invoices to your Knox inbox or photograph receipts on-site and Knox automatically extracts the amount, vendor, and category to create the transaction. The running budget vs. actual view updates in real time so you always know where you stand.
What happens if a rehab goes over budget?
Knox flags budget overruns as they develop, not after the fact. DoorVault’s Knox Anomaly Detection surfaces an alert when actual expenses approach your budget ceiling, giving you time to adjust your ARV estimate, rehab scope, or refinance expectations before you’re locked in.
Can DoorVault help me prepare for a BRRR cash-out refinance?
Yes. DoorVault’s Equity Tracker shows your real-time LTV, DSCR, and equity position per property. You can run refinance scenarios with different ARV assumptions to see your projected cash-out before you order the appraisal. Every rehab expense is documented and available if your lender requests a cost breakdown.
Does DoorVault work for investors managing multiple BRRR deals at once?
Yes. Each property has its own BRRR pipeline stage and rehab budget tracker. You can view all active rehab projects across your portfolio from a single dashboard, compare budget vs. actual by property, and see which deals are approaching refinance readiness.
What construction cost trends should BRRR investors watch in 2026?
Construction costs rose roughly 5% year over year through early 2026, with larger spikes in steel and aluminum. Skilled labor shortages are the bigger pressure point across most markets. Build 15 to 20% contingency into your rehab budgets and track actual costs in real time so overruns surface while you still have options.
