The housing market looks very different this summer than it did just a few years ago. In many parts of the country, buyers finally have more room to negotiate as inventory rises and homes take longer to sell. Nationally, existing-home sales are mostly flat year over year, while housing inventory continues to grow and affordability is improving across every region, according to the National Association of Realtors (NAR).

But some markets are still moving at a much faster pace.

Many of the country’s hottest summer housing markets are concentrated in the Northeast and Midwest, where inventory remains tight and competition is strong. HomeLight’s latest Top Agent Insights survey found that sellers continue to hold the most negotiating power in those two regions, even as market conditions soften elsewhere. “When the right house hits the market, competition absolutely still exists,” says Robyn Nasuti, a seasoned Massachusetts real estate agent.

Using a mix of housing market data and local expertise, here are 15 housing markets where sellers continue to have the upper hand this summer.