Bad Repair Estimates Are Killing Your Deals: How to Get Them Right
If overpricing is the number one reason wholesale deals do not sell, bad repair estimates are number two. And they are directly related: an underestimated repair budget inflates your effective asking price from the buyer's perspective. You think you are offering a deal at $120K with $30K in repairs. The buyer walks the property and sees $55K in repairs. To them, your $120K deal is really a $145K deal, and the numbers no longer work.
Repair estimation is a skill that takes time to develop, but the learning curve flattens quickly if you use a systematic approach instead of guessing. Here is how to get repair estimates right.
Why repair estimates go wrong
You have never rehabbed a house
This is the most common reason new wholesalers get repairs wrong. If you have never personally managed a renovation, you do not have the reference points to estimate costs accurately. You might know that a kitchen remodel costs "around $15K" from watching HGTV, but that number could be $8K or $35K depending on the scope, market, and finishes. Without firsthand experience, every number is a guess.
You did not walk the property
Estimating repairs from photos or Google Street View is unreliable. Photos do not show the condition of the roof from above, the state of the plumbing under the sinks, the feel of the floors (soft spots indicate subfloor damage), the smell (mold, pet urine, smoke), or the sound the HVAC makes when it runs. A walkthrough catches issues that photos miss every time.
You underestimated the scope
The most dangerous repairs are the ones you did not account for at all. You budgeted for new paint, flooring, and kitchen updates but did not check the electrical panel (a Federal Pacific panel needs replacement: $2,500-$4,000), the plumbing (galvanized pipes need to be replaced with PEX: $5,000-$15,000), or the foundation (pier and beam leveling: $3,000-$15,000). These hidden costs turn a $30K cosmetic rehab into a $60K structural renovation.
You used national averages instead of local costs
Labor costs vary dramatically by market. A roof replacement that costs $6,000 in Memphis might cost $12,000 in Los Angeles. Drywall installation that runs $1.50 per square foot in a low-cost market could be $3.00 in a high-cost market. Using national average cost databases without adjusting for your local market produces estimates that are systematically off in one direction.
The category-based estimation approach
The most reliable way to estimate repairs without contractor experience is the category-based approach. Instead of trying to create a line-item budget for every nail and board, break the rehab into major categories and estimate each one based on the scope of work needed.
Cosmetic (light rehab)
A cosmetic rehab means the house is structurally sound, has functioning mechanical systems, and primarily needs aesthetic updates to be marketable. Typical items include:
- Interior paint: $1.50-$3.00 per square foot of living space. A 1,500 sqft house costs $2,250-$4,500 for interior paint.
- Flooring: $3-$7 per square foot installed for LVP (luxury vinyl plank), which is the most common choice for investment properties. Carpet in bedrooms runs $2-$4 per square foot installed. A 1,500 sqft house with LVP throughout costs $4,500-$10,500.
- Kitchen cosmetic update: New countertops ($1,500-$4,000), paint or reface cabinets ($1,000-$3,000), new hardware ($200-$500), new faucet ($150-$400). Total: $3,000-$8,000 without replacing cabinets.
- Bathroom cosmetic update: New vanity ($200-$800), new faucet ($100-$300), new toilet ($150-$400), new mirror and light fixture ($100-$400), re-grout or paint tile. Total: $1,000-$3,000 per bathroom.
- Landscaping: Basic cleanup, mow, trim, mulch: $500-$1,500.
Typical cosmetic rehab total: $15,000-$30,000 for a 3/2 single-family home in most markets.
Moderate rehab
A moderate rehab includes cosmetic work plus replacement of one or more major systems. The house needs more than paint and flooring but does not need a full gut renovation. Common items in a moderate rehab:
- Kitchen full remodel: New cabinets, countertops, appliances, flooring, backsplash, plumbing fixtures. $10,000-$25,000 depending on size and quality of finishes.
- Bathroom full remodel: New tub/shower, tile, vanity, toilet, plumbing fixtures, exhaust fan. $5,000-$12,000 per bathroom.
- Roof replacement: $5,000-$12,000 for asphalt shingle on a typical 1,500 sqft house, depending on pitch and market.
- HVAC replacement: $4,000-$8,000 for a standard split system (condenser + furnace or air handler + ductwork repair).
- Water heater replacement: $800-$2,000 installed for a standard tank water heater.
- Electrical panel upgrade: $1,500-$4,000 to replace an outdated or undersized panel.
Typical moderate rehab total: $35,000-$65,000 for a 3/2 single-family home.
Major rehab (full gut)
A major rehab means stripping the house to studs and rebuilding. This applies to properties with severe water damage, fire damage, structural failure, or extensive termite damage. Major rehab costs are highly variable, but general ranges include:
- Foundation repair: $3,000-$15,000 for pier and beam leveling, $5,000-$25,000+ for slab foundation repair.
- Full electrical rewire: $8,000-$15,000 for a whole-house rewire.
- Full plumbing repipe: $5,000-$15,000 to replace all supply and drain lines.
- Structural framing: Highly variable. Replacing load-bearing walls, roof trusses, or floor joists can range from $5,000 to $30,000+.
- Mold remediation: $2,000-$10,000 depending on extent. Larger projects can exceed $20,000.
- Dumpster and demolition: $2,000-$5,000 for interior demo and debris removal.
Typical major rehab total: $60,000-$120,000+ for a 3/2 single-family home. At this level, the numbers only work if the purchase price is very low relative to ARV.
How to walk a property for repair estimation
When you walk a property, follow a consistent checklist so you do not miss anything. Start outside and work your way in:
- Exterior: Roof condition (missing shingles, sagging ridgeline, age), siding condition, windows (single-pane, broken, fogged), foundation (cracks, settling, water stains), gutters, landscaping, driveway, fence
- HVAC: Locate the system, check the age (on the nameplate), turn it on and listen for unusual sounds, check ductwork condition in the attic or crawlspace
- Electrical: Check the panel (brand, amperage, breaker type), test outlets in each room, look for knob-and-tube or aluminum wiring, check GFCI outlets in kitchen and bathrooms
- Plumbing: Run water in every sink and tub, check under sinks for leaks, flush every toilet, check water heater age and condition, look for pipe material (copper, PEX, galvanized, polybutylene)
- Interior room by room: Walls (cracks, stains, holes), ceilings (water stains, sagging), floors (condition, soft spots), doors (operation, condition), windows (operation, seal condition)
- Kitchen: Cabinet condition, countertop condition, appliance age and condition, plumbing fixtures, flooring
- Bathrooms: Tile condition, tub/shower condition, toilet operation, vanity condition, exhaust fan
- Attic: Insulation level, roof leaks, HVAC ductwork, signs of pests
- Garage/outbuildings: Structural condition, door operation, electrical
Take photos of everything, including the areas that look fine. Photos help you estimate later and serve as documentation if there is a dispute about property condition.
Getting contractor bids
For deals where accuracy matters most (large rehabs, tight margins), get actual bids from contractors. Here is how to do it efficiently:
- Build a contractor network before you need it. Identify 2-3 general contractors and key specialty contractors (roofing, HVAC, plumbing, electrical, foundation) in each market you work. Introduce yourself and explain that you are a wholesaler who will be sending them properties for bids regularly.
- Walk the property together. The best bid comes from a contractor who has seen the property in person. A 30-minute walkthrough with a GC produces a much more accurate estimate than sending photos and asking for a ballpark.
- Ask for a scope of work, not just a number. A contractor who says "$45K" is less useful than one who provides a line-item breakdown. The breakdown lets you verify the scope and compare across contractors.
- Get at least two bids for major work. Contractor pricing varies by 20-40% for the same scope. Two bids give you a reality check and negotiating leverage.
Using software tools
Repair estimation software can bridge the gap between guessing and hiring a contractor for every property. Deal Run's repair estimator lets you photograph the property, classify condition by category, and generate an estimate based on local cost data. This is not a replacement for a contractor bid on a major rehab, but it is accurate enough for wholesaling purposes where you need a reliable ballpark to price your deal correctly.
The advantage of software is speed and consistency. Walking a property and entering conditions into a tool takes 20 minutes and produces a documented estimate with a breakdown by category. Doing the same thing mentally in your head produces a round number that might be off by 30%. For a more detailed walkthrough of repair scoping, see our guide on determining rehab scope.
Common underestimates to watch for
| Item | What wholesalers estimate | What it actually costs |
|---|---|---|
| Foundation repair | "Probably fine" | $5,000-$25,000 |
| Sewer line replacement | Not considered | $3,000-$10,000 |
| Termite damage repair | "A few boards" | $2,000-$15,000+ |
| Mold remediation | "Just some spray" | $2,000-$20,000 |
| Electrical rewire | "Update the panel" | $8,000-$15,000 |
| Permits and code compliance | Not considered | $2,000-$5,000 |
| Dumpster and hauling | "A few hundred" | $1,500-$4,000 |
The pattern is clear: structural, mechanical, and environmental issues are consistently underestimated by new wholesalers. If you are uncertain about any of these areas, err on the high side. Your buyers will catch the difference during their walkthrough, and an underestimate damages your credibility while an overestimate creates a pleasant surprise.
The impact on your deals
Getting repairs right has a direct, dollar-for-dollar impact on your ability to sell deals. Every $1,000 you underestimate in repairs is $1,000 that your buyer has to absorb, which makes your deal $1,000 less attractive. If your repair estimate is $20K low on a deal with a $10K spread, the deal is unsaleable. If your estimate is accurate, the same deal moves in 48 hours.
Accuracy builds reputation. Buyers who consistently see that your repair estimates are within 10-15% of reality will trust your deals and respond faster. Buyers who have been burned by your bad estimates will stop opening your emails. In a business built on repeat relationships, your repair estimation accuracy is part of your brand.