How to Underwrite a Southwest Florida Deal: ARV, Repairs and Flood Factors Cash Buyers Check
The Southwest Florida-specific items that move a cash buyer’s number — flood zones, the 50% rule, seawalls, utilities, roofs, permits and condo laws — so your deals price right the first time.
A spreadsheet ARV minus a per-square-foot rehab number works in a lot of markets. In Southwest Florida it gets wholesalers into trouble. Two houses on the same street can carry very different values because one sits higher, one has a newer roof the insurer will accept, or one has a seawall that needs replacing. After Hurricane Ian made landfall near Cayo Costa in Lee County on September 28, 2022, and Helene and Milton followed in 2024, buyers here look much harder at storm exposure than they used to.
This is how we think through a deal in Lee, Collier and Charlotte counties and the rest of our Southwest Florida home market. Price your contracts with these factors in mind and your packages will line up with what cash buyers can actually pay.
How do flood zones and elevation change the numbers?
Pull the FEMA flood zone for every property before you sign. Much of coastal Lee, Collier and Charlotte sits in special flood hazard areas — AE zones, and VE zones closest to the Gulf — while inland areas such as much of Lehigh Acres are often in X zones. The zone affects insurance cost, lender requirements and what an end buyer will pay.
Pre-FIRM vs. post-FIRM construction
Older homes built before the community’s first flood insurance rate map often sit below today’s base flood elevation. An elevation certificate, if the seller has one, tells you where the lowest floor sits relative to that line. A home built at or above required elevation is a different asset from a slab-on-grade ranch two feet below it, even if they look identical in photos.
The FEMA 50% substantial-improvement rule
In a special flood hazard area, if the cost of improvements — or the cost to repair damage — equals or exceeds 50% of the structure’s market value (not including land), the building generally must be brought into compliance with current floodplain rules. For a below-elevation home, that can mean elevating it or demolishing and rebuilding. Local building departments administer this rule, and many look back at cumulative work, so the details vary by jurisdiction.
Why it matters for your deal: a buyer planning a heavy rehab on a low, older home may hit the 50% threshold and be unable to do the renovation they priced. That pushes the realistic exit toward a lighter rehab, a teardown or a rebuild — and the price has to follow. Tell us if you know the elevation, prior flood claims or whether the city flagged the home as substantially damaged after a storm. Our hurricane and flood damage page covers what that looks like from the seller’s side.
Seawalls, canals, wells and utility assessments
Canal homes in Cape Coral and Punta Gorda
In Cape Coral, canal type drives value: Gulf-access saltwater canals, sailboat-access lots with no bridges to the river, and freshwater canals each trade differently. Punta Gorda Isles and Burnt Store Isles have similar distinctions. When you comp a canal home, match the access type, not just the fact that it’s “on water.”
Seawalls are the hidden line item. Look for cracked caps, tilting panels, sinkholes or voids behind the wall, and exposed rebar. Replacing a seawall is a major cost, often requires permits, and many were damaged in recent storms. Docks and boat lifts add more. Send photos of the cap and waterline and any seawall permit history you can find.
Well, septic and utility expansion
Large parts of Cape Coral, Lehigh Acres and Golden Gate Estates were built on private wells and septic systems. Ask whether the home is on city water and sewer. Where Cape Coral’s utility expansion program reaches a neighborhood, owners face connection costs and special assessments — sometimes paid over time on the tax bill, which a buyer may have to assume or pay off. Check the tax bill for non-ad valorem assessments and note their balance. On septic homes, the age and condition of the drain field matter; a failed system is a real repair.
Roof age and insurability: 4-point and wind mitigation
In Florida, insurance often dictates the rehab scope. Insurers commonly require a 4-point inspection (roof, electrical, plumbing, HVAC) on older homes, and many will not write a policy on a roof near the end of its life. A wind mitigation report documents features — roof-to-wall connections, roof deck attachment, shutters or impact openings — that can reduce premiums.
For underwriting, that means:
- An older shingle roof is usually a replacement, not a “maybe,” because the end buyer needs to insure it.
- Electrical panels some insurers reject, polybutylene or galvanized plumbing, and old water heaters show up on the 4-point and become required repairs.
- Tile and metal roofs last longer but are costly when underlayment fails.
- Impact windows and shutters add value in this market — note them in your package.
Get the roof’s permit date from the local building department. It is more reliable than the seller’s memory.
Open permits, expired permits and unpermitted work
Search the permit portal for every address. In Southwest Florida you’ll regularly find expired roof or storm-repair permits that were never finaled, enclosed lanais and garage conversions with no permit, and additions that don’t match the property appraiser’s square footage. After a big storm, a lot of repair work gets done fast, and not all of it is permitted.
How these issues affect price
- Open or expired permits usually need to be closed out before or after closing, sometimes requiring inspections, engineering letters or reopening walls.
- Unpermitted space may not count toward ARV and may need to be permitted after the fact or removed. In a flood zone, it can also count toward the 50% calculation.
- Code enforcement cases and liens can attach to the property and grow with daily fines until resolved.
None of this kills a deal for us — buying properties with code violations and unpermitted work is a core part of what we do. It just has to be priced in. List what you found in your package and we’ll tell you how we see it.
Condo milestone inspections and structural reserves
Florida’s post-Surfside condo laws changed how condos trade. Associations in buildings three stories or taller must complete milestone structural inspections as buildings age, and many associations must complete a structural integrity reserve study (SIRS) and fund reserves for key structural components rather than waiving them. The rules have been amended more than once since 2022, so confirm current requirements with the association and, where needed, a Florida attorney.
For a wholesaler, the practical questions are:
- Has the building completed its milestone inspection, and what did it find?
- Is there a SIRS, and are reserves funded?
- Are there pending or recently passed special assessments, and who pays them at closing?
- Is the unit owner behind on dues, and does the association have a lien?
- Does the association restrict rentals or require approval of buyers?
A condo with a large assessment coming can be worth far less than its last sale suggests. Get the estoppel early and read the latest board minutes. More on what we buy is on our condos and townhomes page.
Choosing comps and evaluating small commercial
Picking comps that hold up
- Stay close and recent. Same neighborhood, ideally sold within the last several months. In a shifting market, older sales can mislead.
- Match the factors that matter here. Flood zone, elevation, construction era (pre- vs. post-FIRM), pool, garage, water access type and roof type.
- Match the condition you’re projecting. If your ARV assumes a full renovation with a new roof and impact windows, use comps that have them.
- Separate storm-era sales. Sales of damaged homes after Ian, Helene or Milton show as-is values, not ARV. Note them, but don’t mix them in.
Seasonality also plays a role. Southwest Florida buyer activity typically picks up in winter and spring when seasonal residents are in town, which can affect how long a resale takes. Coastal areas like Fort Myers Beach and Naples behave differently from inland areas, so don’t borrow comps across those lines.
How we evaluate small commercial
For small retail, office, industrial, mixed-use and multifamily, the comps matter less than the income. We look at the rent roll, lease terms and expirations, tenant quality, expense history and who pays what (gross vs. net leases), then compare the resulting value against what the building would cost to replace and what similar properties have traded for. Physical items still matter: roof and HVAC age, flood exposure, parking, ADA compliance and any environmental concerns. Read more about our approach on our commercial property page.
A worked underwriting example (hypothetical)
Everything in this example is hypothetical. The house, the numbers and the line items are invented to show the method, not to describe a real property, a typical repair cost or current market values. Your contractor’s bids and your own comps are what count on a real deal.
The hypothetical property
Picture a 1980s concrete-block ranch, three bedrooms and two baths, on a freshwater canal in Cape Coral. It is on city water and sewer, the shingle roof is near the end of its life, the A/C is original, the kitchen and baths are dated, and the seawall cap shows cracking but the panels look straight. An elevation certificate shows the lowest floor at or above base flood elevation. The owner is motivated and the house is vacant.
| Line item | Hypothetical amount | How it was reasoned |
|---|---|---|
| After-repair value (ARV) | $360,000 | Three renovated freshwater-canal sales nearby, same era, same flood zone, all with newer roofs |
| Roof replacement | $22,000 | Needed for the end buyer to insure the home |
| A/C system | $9,000 | Original unit; will show on the 4-point |
| Kitchen, baths, flooring, paint | $45,000 | Finish level matched to the comps, not above them |
| Electrical panel and plumbing updates | $12,000 | Insurability items flagged in the photos |
| Seawall cap repair allowance | $15,000 | Cap only; panels appear sound |
| Contingency (10% of rehab) | $10,300 | For what photos can’t show |
| Buyer closing costs | $4,000 | Title, recording and lender-free closing |
| Holding costs | $18,000 | About six months of taxes, insurance, utilities and cost of capital |
| Resale costs | $25,200 | Commissions, seller closing costs and deed doc stamps on resale |
| Profit and risk margin | $36,000 | Ten percent of ARV in this illustration |
| Maximum purchase price | $163,500 | ARV minus every line above |
What the example teaches
- The rehab is only part of the gap. In this illustration, closing, holding, resale and margin together add up to more than half of the renovation budget. Wholesalers who subtract only repairs from ARV routinely overprice contracts.
- The 50% check comes before the spreadsheet. This house was assumed to sit at or above base flood elevation. If the same house sat below it in a special flood hazard area, and the jurisdiction valued the structure at, say, $150,000, a rehab of more than $75,000 would already exceed half the structure’s value. That could force elevation or a much smaller scope, and the entire table would change. How the structure value is set, and what work counts, varies by jurisdiction.
- Small changes swing the answer. If the seawall panels turn out to be failing, a cap repair becomes a full replacement. If one of the three comps was actually a sailboat-access lot, the ARV drops. If the resale lands in late summer instead of peak season, holding costs grow. Each of these moves the maximum price by thousands.
- Disclose your assumptions. When you send a package, say which comps you used and what scope you assumed. Then a buyer can agree or show you exactly where the numbers differ.
SWFL comp-selection pitfalls that sink packages
The comp rules earlier on this page cover the basics. These are the traps we see most often in Southwest Florida packages, beyond flood zone and storm-era sales.
Builder sales and new construction
Areas with many new homes, such as Lehigh Acres and parts of Cape Coral and North Port, have lots of recent builder sales. Those homes come with new roofs, current code, impact openings and often builder incentives that don’t show in the recorded price. A renovated 1980s house rarely sells at the same figure, even with the same bedroom count.
Lot size, corner lots and extra lots
In Cape Coral and similar platted communities, a home on an oversized or double lot, or a corner lot, can trade differently from a standard lot down the street. Check the parcel’s lot count and dimensions on the property appraiser record before borrowing a comp.
Community fees, CDDs and club memberships
Many gated communities in Estero, Bonita Springs, North Naples and elsewhere carry community development district assessments, high HOA dues or mandatory club memberships. Two similar houses can sell for different prices simply because one carries a heavier annual cost. Compare within the same community when you can, and note the fees.
Age-restricted and manufactured-home communities
55-plus communities and resident-owned or land-lease manufactured-home parks have narrower buyer pools and their own approval rules. Don’t comp a site-built home against a manufactured home, or a land-lease home against one on owned land.
Furnished, family and distressed sales
Seasonal condos often sell “turnkey furnished,” which can inflate the recorded price. Sales between relatives, estate liquidations, short sales and bank-owned sales may not reflect open-market value at all. Read the listing remarks before you trust a sold price.
Square footage that doesn’t match
Listings, appraiser records and the house itself often disagree. Compare living area under air to living area under air, and remember that an enclosed lanai or garage conversion without permits may not count. Inland neighborhoods such as San Carlos Park have plenty of older homes with later additions, so verify before you compute a price per square foot.
Key takeaways
- Comp by flood zone, elevation and water access type, not just square footage and zip code.
- FEMA’s 50% rule can limit renovation on older, low homes in flood zones — price for the realistic scope.
- Budget for seawalls, septic, utility assessments and an insurable roof.
- Pull permit history every time; unpermitted and open permits are priced, not ignored.
- For condos, milestone inspections, SIRS reserves and special assessments can reshape value.
Frequently Asked Questions
What is the FEMA 50% rule in plain English?
In a special flood hazard area, if improvements or repairs cost 50% or more of the building’s market value (excluding land), the building generally has to meet current floodplain requirements, which can mean elevation. Local building departments enforce it and their methods vary, so check with the jurisdiction for any specific property.
Do you buy homes that flooded during Ian, Helene or Milton?
Yes. Storm-damaged homes are a big part of what we look at in Southwest Florida. Send photos, any insurance or FEMA paperwork, and whether the city issued a substantial damage determination. The price has to reflect the realistic repair or rebuild path.
Should I include the seawall in my repair estimate?
If the property is on a canal, yes — at least note its condition. A failing seawall is one of the largest repair costs on a Cape Coral or Punta Gorda canal home. Photos of the cap, the panels and the yard behind the wall help us judge it quickly.
How do condo special assessments affect my deal?
A pending or recently approved assessment can reduce what a buyer will pay, sometimes significantly. Find out the amount, the due dates and who is responsible at closing. Getting the association estoppel early avoids surprises late in your inspection period.
Do you buy small commercial outside Southwest Florida?
Yes. We buy improved commercial property throughout Florida. Send the rent roll, leases and operating history along with photos and the address, and we’ll review it like any other deal.
Is the hypothetical example your actual buying formula?
No. It illustrates the method, with invented numbers. Real offers depend on the specific property, current comps, contractor pricing, financing costs and our exit plan, and the margin we need varies with risk. Use the structure to check your own math, then send the package and we’ll tell you how our view compares.
How many comps should I include, and how old can they be?
Three to five well-matched sales usually beat ten loose ones. Favor recent closings in the same neighborhood with the same flood zone, water access and construction era. If you have to go older or farther away, say so and explain why; transparent reasoning is more useful to a buyer than a long list.
How do you calculate ARV for a canal home in Cape Coral?
We base ARV on recent renovated sales with the same water type, similar route to open water, comparable seawall condition and similar flood elevation. A Gulf-access home with a sound wall and a freshwater-canal home are not comps for each other, even on the same street. Send three to five sold comps with your adjustments, and we’ll compare them with ours.
How should I estimate repairs on a Southwest Florida deal?
Build the repair budget line by line, starting with roof, seawall, electrical, plumbing, HVAC, windows and storm damage before cosmetics. Older SWFL homes often need panel, cast-iron drain and roof replacement to be insurable. Photos of the roof, panel, water heater and any water damage help us check your numbers faster, and the rule of thumb is to budget conservatively.
How does the flood zone change what a cash buyer will pay for my deal?
A higher-risk flood zone usually lowers the exit price and raises the buyer’s cost, so the offer comes down. AE and VE homes below base flood elevation face higher insurance and the FEMA 50% rule on major renovations. Include the flood zone, elevation certificate if one exists, and any flood claim history in your package.
Do well, septic or utility assessments change your offer?
Yes, they do; unpaid utility assessments, septic repairs and well issues all reduce what we can pay. In parts of Cape Coral and Lehigh Acres, water and sewer expansion assessments and well-and-septic setups are common underwriting items. Check the tax bill and county or city records for assessments, and note any septic or well problems in your submission.
What holding costs should I include when underwriting a Florida deal?
Include taxes, insurance, utilities, lawn and pool care, HOA dues, financing costs and both closing costs for the months of renovation and resale. In Southwest Florida, insurance on a vacant or under-renovation home can be expensive or hard to bind. Underestimating holding time is a common reason a deal that looks fine on paper doesn’t work for buyers.
Where we buy in Southwest Florida. The flood and repair factors above weigh differently by submarket, so it helps to know how each area behaves before you lock up a contract. Our local pages explain what we look for when we buy houses in Fort Myers, canal homes when owners sell a house in Cape Coral, well-and-septic properties in Lehigh Acres and Golden Gate Estates, and coastal homes in Port Charlotte.
Ready to test your numbers? Send the deal below, or see how we work with you on our wholesaler partner page and in our guide to getting your deals closed fast. Questions: (239) 686-0823 or acquisitions@liberacg.com.
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