The answer: There are four common ways to coordinate a sale and a purchase: sell first (often with a rent-back), buy first using bridge financing or savings, make a contingent offer, or close both on the same day. Which one fits depends on your finances and on how competitive each market is.
The four approaches
1. Sell first, then buy
You know exactly what you have to spend and you're not carrying two mortgages. A rent-back, where you stay in the home for an agreed time after closing, can give you breathing room to find the next one.
2. Buy first, then sell
You can write a clean offer without a sale contingency, which matters in competitive markets. It usually requires bridge financing, a home equity line or savings, and you carry both homes for a while.
3. Contingent offer
Your purchase depends on your sale. It protects you but makes your offer weaker; it works best where sellers have fewer offers to choose from.
4. Same-day close
Both escrows close together. It needs tight coordination between agents, lenders and escrow, and a backup plan if one side slips.
Use each market's numbers
Take a move from Los Alamitos to Newport Beach. Over the three months ending September 2026, homes in Los Alamitos went under contract in about 76 days at 99.6% of list, while Newport homes took about 65 days and sold for 96.9% of list. A slower-moving sale and a market where buyers can negotiate often point toward selling first, then buying with more leverage. In faster markets such as Rossmoor (about 35 days, 34.5% above list), sellers are more likely to get a clean offer and a rent-back.
What clients say about doing both
"Buying our dream home in this market was not an easy feat, nor was selling our current home + balancing a tight schedule to move out/move in."Zillow review of Eunice Oh, Diamond Bar clients who bought and sold, July 2024