Ask a seasoned flipper what they wish they'd known on deal one and the answer is almost always the same: "I underestimated the rehab." It's the most common reason flips lose money. Not bad ARV estimates, not overpaying on the purchase — it's the renovation going over budget.
The fix is a systematic approach: estimate costs room by room, line item by line item, then add contingency. It takes more time upfront than a gut-feel number, but it's the difference between a $40,000 profit and a $5,000 loss.
The Three Levels of Rehab
Before diving into line items, it helps to categorize the scope of work. Most investment property rehabs fall into one of three levels:
| Level | Scope | Typical Cost | Timeline |
|---|---|---|---|
| Cosmetic | Paint, flooring, fixtures, landscaping, minor repairs | $15,000–$35,000 | 2–4 weeks |
| Moderate | Cosmetic + kitchen/bath remodel, some systems updates | $35,000–$75,000 | 4–8 weeks |
| Full Gut | Down to studs, new systems, layout changes, structural | $75,000–$150,000+ | 8–16 weeks |
Cosmetic rehabs have the best risk-to-return ratio for newer investors. The scope is predictable, surprises are rare, and timelines are short. Full gut rehabs can be extremely profitable but carry significantly more risk from hidden problems and timeline delays.
Room-by-Room Cost Breakdown
Kitchen
Kitchens are usually the highest-ROI renovation and often the most expensive room. The range depends heavily on whether you're refreshing or replacing.
| Item | Budget | Mid-Range | High-End |
|---|---|---|---|
| Cabinets (full set) | $3,000–$5,000 | $5,000–$10,000 | $10,000–$20,000+ |
| Countertops | $1,000–$2,000 | $2,500–$5,000 | $5,000–$10,000 |
| Appliances (package) | $1,500–$2,500 | $3,000–$5,000 | $5,000–$10,000 |
| Flooring | $500–$1,000 | $1,000–$2,000 | $2,000–$4,000 |
| Backsplash | $300–$600 | $600–$1,500 | $1,500–$3,000 |
| Sink + Faucet | $200–$400 | $400–$800 | $800–$1,500 |
| Lighting | $100–$300 | $300–$800 | $800–$2,000 |
| Paint | $200–$400 | $200–$400 | $200–$400 |
| Kitchen Total | $6,800–$12,200 | $13,000–$25,500 | $25,300–$50,900 |
For investment properties, mid-range finishes deliver the best ROI. Budget cabinets with granite or quartz counters and stainless appliances photograph well and attract tenants/buyers without the cost of high-end materials. Don't put $20K cabinets in a $250K house.
Bathroom
| Item | Budget | Mid-Range |
|---|---|---|
| Vanity + sink | $300–$600 | $600–$1,500 |
| Toilet | $150–$250 | $250–$500 |
| Tub/shower surround | $400–$800 | $1,500–$4,000 |
| Tile (floor + walls) | $500–$1,200 | $1,200–$3,000 |
| Fixtures (faucet, shower head) | $150–$300 | $300–$800 |
| Mirror + lighting | $100–$300 | $300–$800 |
| Paint | $100–$200 | $100–$200 |
| Bathroom Total | $1,700–$3,650 | $4,250–$10,800 |
Whole-House Items
| Item | Typical Cost Range |
|---|---|
| Interior paint (whole house) | $3,000–$7,000 |
| Flooring — LVP (whole house, ~1,200 sq ft) | $4,000–$8,000 |
| Flooring — Carpet (bedrooms only) | $1,500–$3,500 |
| Interior doors + hardware | $1,500–$3,500 |
| Light fixtures (all rooms) | $500–$2,000 |
| Exterior paint | $3,000–$8,000 |
| Landscaping / curb appeal | $1,000–$5,000 |
| Dumpster / demo / cleanup | $1,000–$3,000 |
Major Systems (When Needed)
| System | Typical Replacement Cost |
|---|---|
| Roof (asphalt shingle) | $8,000–$20,000 |
| HVAC (furnace + AC) | $5,000–$12,000 |
| Electrical panel upgrade | $2,000–$4,000 |
| Full electrical rewire | $8,000–$20,000 |
| Plumbing (repipe) | $5,000–$15,000 |
| Water heater | $1,000–$3,000 |
| Foundation repair | $5,000–$30,000 |
| Sewer line replacement | $3,000–$10,000 |
| Windows (all, ~10 windows) | $5,000–$12,000 |
Foundation, roof, and full electrical/plumbing are the items that blow budgets. If you suspect any of these need work, get a specialist inspection before making an offer. A $300 foundation inspection can save you from a $25,000 surprise.
The Contingency Rule
No rehab estimate is perfect. Things hide behind walls, under floors, and in attics. Your contingency is what keeps surprises from turning into losses.
| Rehab Type | Recommended Contingency |
|---|---|
| Cosmetic (known condition) | 10–15% |
| Moderate (some unknowns) | 15–20% |
| Full gut (many unknowns) | 20–25% |
| Old construction (pre-1960) | 25%+ |
Kitchen (mid-range): $18,000
2 Bathrooms (mid-range): $14,000
Paint (interior + exterior): $8,000
LVP Flooring (whole house): $6,000
Doors, hardware, fixtures: $3,500
Landscaping: $2,500
Dumpster + demo: $2,000
Water heater: $1,500
Subtotal: $55,500
Contingency (15%): $8,325
Total Rehab Budget: $63,825
Per-Square-Foot Shortcuts
Once you've done a few detailed estimates, you'll develop a feel for per-square-foot costs in your market. These are useful for quick screening before doing a full breakdown:
| Rehab Level | Per Sq Ft (approximate) |
|---|---|
| Cosmetic | $10–$25/sq ft |
| Moderate | $25–$50/sq ft |
| Full gut | $50–$100+/sq ft |
For a 1,400 sq ft house needing a moderate rehab, a quick estimate would be 1,400 × $35-$45 = $49,000-$63,000. This aligns with the detailed room-by-room example above. Use per-square-foot as a sanity check, not a replacement for detailed estimating.
Getting Better at Estimating
Walk properties constantly. Even if you're not buying, walk open houses and distressed properties in your target area. Practice estimating what needs to be done and what it would cost. Then compare your estimates to actual renovation costs when flips are completed and relisted.
Build contractor relationships. A reliable contractor who gives you honest estimates is worth their weight in gold. Walk properties together and ask them to break down their bids line by line so you learn the real costs.
Track every dollar on your first deals. Keep a spreadsheet of every material purchase, every contractor payment, every permit fee. After 2-3 projects, you'll have your own cost database that's tailored to your market and your contractors.
Price materials yourself. Spend an afternoon at Home Depot or Lowe's pricing cabinets, countertops, flooring, and fixtures at each quality level. Knowing material costs helps you evaluate contractor bids and spot inflated quotes.
Plug Your Rehab Budget Into the Calculator
Enter your rehab estimate into CapRateKit's Fix & Flip or BRRRR calculator to see how it affects your profit, ROI, and maximum offer price.
Try CapRateKit Free →Frequently Asked Questions
Should I do the work myself or hire a contractor?
It depends on the scope and your skills. Cosmetic work like painting, landscaping, and simple fixture swaps are reasonable DIY tasks that save significant labor costs. Anything involving permits, structural changes, electrical, plumbing, or HVAC should be done by licensed professionals. Even if you can do the work, consider whether your time is better spent finding the next deal.
How do I know if a contractor's bid is fair?
Get at least 3 bids for every significant job. Ask each contractor to itemize materials and labor separately. Compare their material costs to what you can buy yourself at big box stores. Labor rates vary by market but $35-$75/hour is typical for skilled trades. If one bid is dramatically lower than the others, that's a red flag — they may cut corners or hit you with change orders later.
What's the biggest mistake beginners make with rehab budgets?
Underestimating scope. Beginners see a house that needs "just paint and flooring" and budget $15K, then discover the subfloor is rotted, the electrical panel is a fire hazard, and the HVAC is on its last leg. Always do a thorough walkthrough — check the attic, crawlspace, electrical panel, water heater age, roof condition, and foundation before estimating.
Should I include holding costs in my rehab budget?
Not in the rehab budget itself, but absolutely in your overall deal analysis. Holding costs (loan interest, taxes, insurance, utilities) are separate from rehab costs but run the entire time you own the property. A $50K rehab that takes 6 months costs much more than one that takes 3 months once you factor in holding costs. Use our flip calculator to model both.