How to Build a House While Selling Your Current Home in Palm Beach County: Timing the Two Closings
October 1, 2026 · 7 min read · By Onias Derilus, Broker
How move-up sellers line up a builder's completion date with the sale of their current home: build times, deposits, financing, rent-backs and temporary housing.
If you plan to build a house while selling your current one, the hardest part is usually making the two dates meet. Builders give estimates, and estimates move. Meanwhile, your buyer wants a firm closing date. This guide shows Palm Beach County sellers how to line up the two closings, what to expect from builder deposits and financing, and what to do if the new home runs late.
Key takeaways
- Census data analyzed by NAHB shows a built-for-sale single-family home took an average of 7.6 months from permit to completion in 2024. Contractor-built custom homes took about 12 months.
- Florida law gives buyers of new one- and two-family homes the right to have deposits up to 10% of the price held in escrow, unless they waive it in writing.
- Lenders often count both house payments when you apply for the new loan, unless your current home is under contract and the buyer's financing contingencies have cleared.
- In August 2026, Palm Beach County houses went under contract in a median 40 days, while condos took 69 days. Plan your listing date around that.
- Most sellers sell first and bridge the gap with a rent-back, a short-term rental or a bridge loan.
Why it is hard to build a house while selling
A resale purchase has a fixed closing date in the contract. A new build does not work that way. The builder sets a target, but weather, inspections, materials and labor can push it back. In South Florida, hurricane season adds another layer of risk to summer and fall schedules.
So you face a choice. Sell too early and you need somewhere to live. Sell too late and you may carry two homes, or lose the new one if you cannot close. The goal is to narrow that gap as much as you can and to have a plan for the rest.
How long a new home takes to build
Build times depend on the type of home. According to an NAHB analysis of Census Bureau data, a single-family home built for sale took an average of 7.6 months from permit to completion in 2024. Contractor-built homes took about 12 months, and owner-built homes about 15.1 months. Also, the South Atlantic division, which includes Florida, had the shortest average time from permit to completion, at 7.8 months.
Keep in mind that those figures start at the permit. Before that, you may wait for a lot to be ready, plans to be drawn and permits to be issued. So ask the builder for a timeline that starts at contract signing, not at the permit.
Spec homes vs. to-be-built homes
Many builders in places like Westlake and Port St. Lucie sell homes at different stages. A spec or quick move-in home is already under way, so its date is easier to predict. In contrast, a to-be-built home gives you more choices, but the date sits further out and moves more.
If timing matters most, a home that is already framed or nearly done cuts your risk a lot.
Deposits when you build a house while selling
Builders write their own contracts, and deposit rules vary. Some ask for more money as you add options and upgrades. That cash often has to come from savings, since your equity is still tied up in your current home.
Florida does give you one key protection. Under section 501.1375, the buyer of a one- or two-family home has the right to have deposits, up to 10% of the purchase price, placed in an escrow account. The contract must include a notice of that right, and you can waive it only in writing. The statute also lets a builder draw on escrowed funds in some cases, such as with a surety bond. So read the deposit section closely before you sign.
Financing when you build a house while selling
Next, talk to a lender early. Your new loan will depend on your income, debts and the status of your current home.
Under Fannie Mae guidelines, a lender generally counts the payment on your current home unless it is under contract and the buyer's financing contingencies have cleared. That rule can make it hard to qualify for both homes at once. As a result, many sellers either sell first or use a bridge.
A bridge loan or home equity line can fund the down payment before your sale closes. However, each has costs and limits. Our guide to a bridge loan in Florida compares the options in detail.
Three ways to build a house while selling
Most sellers use one of three plans. Each trades some cost for less timing risk.
Plan 1: Sell first, then rent short-term
You list once the builder is far enough along, sell and move into a rental until the new home is done. This is the safest plan for your money, because you know your sale price before you close on the new home. On the other hand, you move twice and pay rent in between.
Plan 2: Sell first with a rent-back
In a rent-back, you close your sale but stay in the home for a set time as a renter of the buyer. That cuts out one move. However, buyers with mortgages often need to move in within a set period, so long rent-backs are hard to get. Our post on delayed possession after closing explains how these deals work.
Plan 3: Close on the new home first
If you can carry both homes, or use a bridge loan, you can move straight into the new house and then sell the old one empty. That gives you one move and an easier home to show. But you pay two sets of bills until the sale closes, and a slow market raises that cost.
A sample timeline to build a house while selling
Every build differs, but a simple plan looks like this.
- Contract with the builder. Ask for the estimated completion date in writing and how the builder will update you.
- Get preapproved. Learn what you qualify for with and without selling first.
- Prepare your current home. Handle repairs, open permits and decluttering while construction starts.
- Watch for key milestones. Drywall and final inspections are good signs that a date is firming up.
- List at the right time. In August 2026, Palm Beach County houses took a median 40 days to go under contract, and condos 69 days, according to Miami Realtors. Add about a month or more to close.
- Build in a cushion. Set your sale closing with room for a short delay, or line up a rent-back or rental just in case.
Questions to ask your builder
The builder's answers shape every other part of your plan. So ask these before you sign, and get the answers in writing where you can.
- What is the estimated completion date, and what has the builder's recent track record been on similar homes?
- At what stage will the builder give a firm closing date?
- How much notice will you get before closing?
- What deposits are due, and when? Will they sit in escrow?
- Which upgrades must you choose early, and do they add time?
- Does the community have HOA dues or a community development district fee?
- Does the builder offer incentives for using its lender, and what happens if you use your own?
Also, ask to walk a finished home of the same model. Seeing the real product helps you judge the upgrades you need and the ones you can skip. Then compare the full price of the new home, with upgrades, to resale homes nearby. That comparison tells you whether building still makes sense for your budget and timeline.
What to do if the builder runs late
Delays happen. So plan for one before it does.
- Read the builder contract for delay terms and any outside completion date.
- Keep a short-term rental option in mind, such as a furnished monthly unit.
- Ask your buyer early if a short rent-back or later closing is possible.
- Store belongings if you need to move out before the new home is ready.
Also, keep your lender in the loop. Rate locks expire, and a long delay may mean a new lock or new terms.
Tips to build a house while selling with less stress
A few habits make the whole process smoother. First, use your own agent for the new build. The builder's sales staff work for the builder. Second, get every promise in writing, including dates and upgrade prices. Third, price your current home to sell in your target window, not months later. Finally, keep cash on hand for deposits, moving and a few months of overlap.
Frequently asked questions
Should I sell before I build a house?
Selling first lowers your financial risk, because you know your proceeds. However, it usually means a short-term rental or rent-back. If you can carry both homes, closing on the new home first means one move.
How long does it take to build a house while selling?
Census data analyzed by NAHB showed built-for-sale homes averaged 7.6 months from permit to completion in 2024. Add time before the permit, plus your sale timeline.
Can I make my builder contract contingent on selling my home?
Some builders allow it and many do not. Ask before you sign, and read how long you have to sell.
What is a rent-back?
A rent-back lets you stay in your sold home for a set time after closing as a renter of the buyer. Put the terms in writing, including rent, deposit and move-out date.
Sources
- NAHB Eye on Housing, single-family homes built faster in 2024
- Florida Statutes, s. 501.1375 deposits for residential construction
- Fannie Mae Selling Guide, B3-6-06 other real estate owned
- Miami Realtors, Palm Beach County August 2026 sales
Building your next home? Get a new construction vs. resale comparison from a Pure Equity agent, and a plan to time your sale around the builder's date. Buyers weighing a new build can also have our agents represent them with the builder. Talk with our team.
