Write the contract price at the top of a page, then subtract every claim that will be paid before the seller sees a dollar, in the order the closing statement will present them. What remains after the mortgage payoff, any other liens, commissions where they apply, seller closing charges, agreed concessions, and the carrying costs already spent to reach closing is the net. On Siesta Key that subtraction is unusually large for listed older homes: a 900,000 dollar list price can settle into the mid 700,000 dollar range after a normal market cycle, before any price reduction, once the full ledger is counted (Frontier Capitals, 2026).
The reason the island ledger runs long is structural. Older homes in the sample averaged 24.2 percent of the price of a new build on a comparable lot, with 12 of 16 sampled homes acquired by builders (Frontier Capitals, 2026), while new construction has traded between 2,500,000 dollars and 5,000,000 dollars (Redfin, 2026). Sellers anchor on the top of that range, buyers price the cottage in front of them, and the months between anchor and closing fill with costs that never appear in the headline price. A proceeds worksheet built before listing, rather than after an offer arrives, is the difference between pricing a house and merely hoping about one.
This report builds that worksheet line by line. Each section isolates one subtraction, gives its island size, and shows how the route chosen, listed or private, changes whether the line exists at all. Owners who finish the arithmetic once tend to negotiate very differently afterward, because they stop defending a gross price and start defending a net figure.
Key Findings
- A 900,000 dollar listed sale commonly nets in the mid 700,000 dollar range after commissions, closing costs, concessions, and carrying expense, before any price cut (Frontier Capitals, 2026).
- Commission alone at 5 to 6 percent removes 45,000 to 54,000 dollars from a 900,000 dollar sale (National Association of Realtors, 2025).
- Commission plus seller closing costs commonly exceed 55,000 dollars together on an 800,000 dollar transaction (Frontier Capitals, 2026).
- Concessions on older island inventory routinely run 15,000 to 40,000 dollars for roofs, electrical work, and flood related items (Frontier Capitals, 2026).
- Carrying an older home through four to eight months of market time costs 25,000 to 60,000 dollars in hold expense alone (Frontier Capitals, 2026).
Where does the worksheet start, and what comes off first?
It starts with a defensible price, not an aspirational one. Recently sold homes and new construction across 34242 provide the transaction record for what buyers have actually paid (Redfin, 2026), and the sample ratio disciplines the starting point for older stock: where a new build on comparable ground sells for 3,200,000 dollars, the older cottage nearby sold for roughly 775,000 dollars (Frontier Capitals, 2026). Pricing the cottage from cottage evidence keeps the worksheet honest, because every later line is a subtraction from that first number and an inflated first number simply hides the disappointment until closing week.
The first true subtractions are the debts secured by the house. The mortgage payoff comes off the top at closing, calculated to the closing date with interest to that day, and any additional liens, including old items that surface in the title search, are cleared from proceeds before the seller share is struck. Recorded deeds and transfer records are where those claims are verified and later shown as satisfied (Sarasota County Clerk of Court, 2026). Owners are sometimes surprised that the payoff exceeds the balance on their last statement; the difference is ordinary accrued interest and escrow accounting, and requesting a payoff figure early removes the surprise from the worksheet.
Automated estimates should not supply the starting price. Home value models for 34242 offer a convenient figure, yet they blend tiers and can sit far from what a specific older cottage on a specific lot will command (Zillow, 2026). The fuller valuation discussion in how much a house is worth in Siesta Key in 2026 explains how comparable sales, lot factors, and the builder residual interact, and a proceeds calculation is only as good as the price assumption feeding it.
How large are the commission and closing lines in practice?
For a listed sale, commission is the largest single friction. The typical total in the Sarasota market is 5 to 6 percent (National Association of Realtors, 2025), which the worksheet should enter as a range rather than a point: 45,000 to 54,000 dollars at 900,000 dollars, scaling directly with price. Because it is a percentage, every 10,000 dollars of price reduction during a long listing quietly reduces the commission too, a small offset that never compensates for the reduction itself.
Seller closing costs form the second line, typically 1 to 2 percent, covering title work, settlement charges, prorations, and transfer items. Inside that band sits the Florida documentary stamp tax on the deed at 7 dollars per 1,000 dollars of consideration (Florida Department of Revenue, 2026), equal to 6,300 dollars on a 900,000 dollar sale and 5,600 dollars on an 800,000 dollar sale. Combined, commission and seller closing costs commonly exceed 55,000 dollars on an 800,000 dollar transaction, roughly 6 to 8 percent of price (Frontier Capitals, 2026). The dedicated breakdown in how much it costs to sell a house in Siesta Key itemizes those charges further for owners who want the closing statement anatomy in full.
Two smaller lines belong on an honest worksheet even though sellers prefer to omit them. Preparation spending before listing, cleaning, minor repairs, landscaping, and the three to six weeks of getting an island home ready, leaves the seller account long before closing and should be entered as a cost of the route, not forgotten because it was paid early. And the disclosure obligation frames the negotiation that follows inspection: a Florida seller must disclose known material defects that are not readily observable, a duty that does not require repairs yet shapes every concession conversation (Supreme Court of Florida, 1985).
Which costs accumulate while the house waits to sell?
Time is a cost line with its own arithmetic. Preparation takes three to six weeks before an older island home is ready, market time commonly runs 60 to 120 days, and the under contract period adds another 30 to 45 days for inspections, appraisal, and financing (Frontier Capitals, 2026). Across four to eight months of that cycle, carrying expense reaches 25,000 to 60,000 dollars in pure hold cost: mortgage interest where a loan exists, taxes, insurance, maintenance, and the utilities and services that keep a barrier island house presentable and protected.
Insurance deserves its own entry on the island worksheet. Wind and flood cover on an older cottage at grade can exceed 1,500 dollars a month combined, with annual premiums running into five figures (Frontier Capitals, 2026). Five months of marketing therefore carries an insurance bill that alone rivals a modest repair, and the flood designation behind those premiums is documented parcel by parcel in county floodplain and map records (Sarasota County, 2026). Sellers who intend to hold through another season should enter the renewal premium, not the expiring one.
Concessions form the other waiting cost, arriving at the end rather than monthly. On older island inventory, buyer demands for roof, electrical, and flood mitigation items routinely total 15,000 to 40,000 dollars (Frontier Capitals, 2026). The seller also carries a disclosure duty through the whole process (Supreme Court of Florida, 1985), so known defects cannot be managed by silence; they are either priced, repaired, credited, or disclosed and negotiated, and each path has a worksheet number. Owners comparing an as is route can measure the avoided exposure against the figures in how much selling a Siesta Key house as is saves in repairs and holding costs.
Price reductions belong in this section too, as a contingent line. A cottage priced from new construction envy rather than cottage evidence invites a cut after the first quiet month, and a cut is the largest subtraction of all because it reduces the starting number itself. The sample context guards against it: the neighborhood ranks 52 of 189 in the study with a 75.0 percent builder demand rate in the sample, figures that describe strong builder interest in older stock without promising occupant buyers at new build prices (Frontier Capitals, 2026).
How does the private route rewrite the same worksheet?
Begin again with price, which in a private negotiation is set by comparable evidence and, for older homes, by the builder residual that the lot supports. Frontier Capitals sources off-market deals to builders and does not act as the builder or as a principal buyer using its own capital, so the worksheet conversation is about the price a builder backed buyer will fund and what the seller keeps from it. The verification habit still applies to any direct buyer presented: proof of funds in the buyer name dated within the last 30 days, recorded deeds in the buyer entity name checkable in county records (Sarasota County Clerk of Court, 2026), a contract in the same name with no assignment clause, and an earnest deposit of typically 1 percent or more that is forfeited if the buyer walks.
Then watch lines disappear. Privacy comes first in lived terms: no showings, no open houses, and no public listing period, which on an island where streets function as social networks keeps the sale quiet until the deed records. Timing compresses next: a direct closing completes in 7 to 21 days, or settles months out with a leaseback by agreement, against the listed cycle counted above (Frontier Capitals, 2026). A short hold shrinks the carrying line from the 25,000 to 60,000 dollar band toward a few weeks of prorated expense.
The percentage lines vanish rather than shrink. No listing commission is owed, removing the 45,000 to 54,000 dollar charge at a 900,000 dollar price (National Association of Realtors, 2025). No seller closing costs are charged in the direct structure described here, removing the 1 to 2 percent band, and the two together are the same savings that commonly exceed 55,000 dollars on an 800,000 dollar transaction. The condition line closes the set: the house sells as is, so the 10,000 to 30,000 dollar repair credit exposure and the 15,000 to 40,000 dollar concession pattern are not negotiated out of the price after inspection (Frontier Capitals, 2026). The mortgage payoff and any liens still come off the top, because debts follow the house through every route, and prorations still settle to the closing date. Owners can open the comparison through the contact page with both worksheets in hand.
A worked comparison fixes the intuition. At 900,000 dollars, a listed route paying the full ledger can land in the mid 700,000 dollar range before the mortgage payoff is even considered (Frontier Capitals, 2026). A private sale at a somewhat lower gross price can therefore deliver an equal or higher net, which is why experienced sellers negotiate on net and treat gross as advertising. County parcel records help test the land side of the private price before accepting it, since lot dimensions, permits, and assessed history are all on file (Sarasota County Property Appraiser, 2026).
A final worksheet habit protects every earlier line. Ask the closing agent for the draft settlement statement at least a day before closing and compare it, line by line, against the worksheet built at listing. Payoff figures should match the lender statement to the closing date, prorations should reflect the parcel tax record (Sarasota County Property Appraiser, 2026), and every fee should have a name the seller recognizes from the contract. Items that appear without a contract basis can be questioned while there is still time to correct them, and the recorded closing documents afterward will show the final figures for the seller records (Sarasota County Clerk of Court, 2026). Sellers who skip the draft review meet the same numbers for the first time at the table, when correction costs goodwill and delay. The habit costs an hour and routinely saves more than any single late negotiation, because arithmetic errors and stale payoff figures are far more common than sellers expect, and they are almost always correctable when caught on the draft rather than after the money has been disbursed.
Methodology and limitations
The figures here come from the sample compiled for this report: 16 older homes in 34242, 12 acquired by builders, a 75.0 percent sample demand rate that overstates the ZIP wide builder share because the sample selected older homes, and an average older price of 24.2 percent of new build value (Frontier Capitals, 2026). Cost bands for commission, closing, concessions, and carrying expense are the documented ranges in the underlying research, applied to round island prices for illustration. Individual worksheets vary with the actual payoff, lien position, contract terms, and time on market.
No worksheet in this report includes an individual income tax computation, which depends on basis and personal circumstances handled in the companion tax analysis, and no worksheet treats an automated valuation as a sale price (Zillow, 2026). Census county data provide background on the ownership base rather than inputs to any single house calculation (U.S. Census Bureau, 2025). Sellers should have the closing agent confirm the final statement figures before relying on an estimate for planning.
Conclusion
Net proceeds are a subtraction exercise, and on Siesta Key the subtractions are large enough that the route matters almost as much as the price. A seller who builds the worksheet first, with commission at 5 to 6 percent (National Association of Realtors, 2025), closing costs, concessions, and months of carrying expense entered honestly, can compare a listed offer and a private offer on the only terms that spend: cash kept after every claim is paid. For a private route conversation, Frontier Capitals can be reached at 401-219-4207 or [email protected]. If two offers arrived for your house tomorrow at different prices, would you know which one actually leaves you with more?
Frequently Asked Questions
What is the single biggest subtraction most sellers forget?
Carrying cost. Commission is visible in the listing agreement, yet the 25,000 to 60,000 dollars spent holding an older home across four to eight months of preparation, marketing, and contract time arrives in monthly bills and is rarely totaled (Frontier Capitals, 2026). Adding the hold months to the worksheet before listing changes pricing decisions more than any other correction.
Does the mortgage payoff count as a cost of selling?
It counts as a subtraction from proceeds, though it is repayment of debt rather than a selling expense. The payoff is calculated to the closing date and satisfied from proceeds, with the satisfaction shown in county records (Sarasota County Clerk of Court, 2026). Two sellers at the same price can keep very different amounts purely because their payoffs differ.
How do I handle a price I have not received yet in the worksheet?
Run the worksheet at three prices: the comparable supported price, a price 5 percent below it, and any private offer actually in hand. The sample based starting point for older homes, roughly 775,000 dollars where a comparable new build sells for 3,200,000 dollars (Frontier Capitals, 2026), anchors the exercise in evidence rather than hope. Compare nets across routes at each price before choosing.
Are seller closing costs separate from the stamp tax?
The stamp tax is one item inside the broader seller closing cost band of 1 to 2 percent. At 7 dollars per 1,000 dollars of consideration (Florida Department of Revenue, 2026), it equals 6,300 dollars on a 900,000 dollar sale, with title, settlement, and proration items making up the rest of the band in a listed closing.
When should the worksheet be built?
Before the route is chosen, not after an offer forces the question. Parcel records for lot and permit facts are available from the county appraiser at any time (Sarasota County Property Appraiser, 2026), comparable sales are already recorded (Redfin, 2026), and the cost bands in this report can be entered in an afternoon. A worksheet built early can still be revised; a worksheet built late only explains a result.
Sources
- Frontier Capitals, 2026. 189 neighborhood builder acquisition sample: 16 homes sampled in 34242, 12 acquired by builders, average older home price 24.2 percent of new build. Market data.
- National Association of Realtors, 2025. Typical seller commission structures, Sarasota market. Industry report.
- Redfin, 2026. Recently sold homes and new construction, ZIP code 34242, Siesta Key FL. Market data.
- Sarasota County Property Appraiser, 2026. Parcel and permit records, Siesta Key FL. Official record.
- Sarasota County Clerk of Court, 2026. Recorded deeds and property transfer records, Siesta Key FL. Official record.
- Sarasota County, 2026. Floodplain ordinance and Flood Insurance Rate Map records for Siesta Key parcels. Official record.
- U.S. Census Bureau, 2025. QuickFacts: Sarasota County, Florida. Government data.
- Zillow, 2026. Home values and recently sold, 34242. Market data.
- Florida Department of Revenue, 2026. Documentary stamp tax: $7 per $1,000 of consideration. Government data.
- Supreme Court of Florida, 1985. Johnson v. Davis, 480 So. 2d 625: seller's duty to disclose known material non-observable defects. Official record.