Selling first or buying first: how to manage the gap.

Sell first

You put your home on the market, accept an offer, and then look for the new one, ideally with your buyer willing to wait a little. If the timing does not work, you complete the sale, put the money in the bank and move into rented accommodation or to family while you look.

Pros: you know exactly what you have to spend; you are a chain-free buyer, which sellers love and which gets offers accepted; no stamp duty surcharge; no bridging loan.

Cons: you may have to move twice and store furniture; renting costs money; you may feel pressure to buy the first thing that comes up.

Buy first

You find the new home and complete on it while still owning the old one, then sell at leisure.

Pros: one move, no rush, you can move in and decorate before you sell.

Cons: you need the money for the new home before you have it from the old one, which means a bridging loan or a lot of cash; you pay the additional-property stamp duty surcharge (5 points on every band in England and NI, 8% of the price in Scotland, higher bands in Wales) and claim it back only when the old one sells; you own two homes' worth of bills and insurance.

Buy and sell on the same day (a chain)

The usual way. Your sale and your purchase complete on the same day, with the money passing along the chain. Everyone moves at once. It works most of the time, and when it does not, it is because someone up or down the chain drops out. The longer the chain, the more likely that is. Downsizers buying from a builder, a retirement developer or an empty property have a short chain and are attractive buyers.

The in-between options

• Part exchange. Some developers, especially of retirement flats, will buy your home from you so you can move without a chain. Convenient, but they typically offer below market value. Get two independent valuations first, and negotiate.
• Assisted move. The developer markets your home for you and pays the agent. Less costly than part exchange, but you still wait for a buyer.
• Bridging loan. A short-term loan, secured on one or both homes, to buy before you sell. Interest of roughly 0.7% to 1.2% a month plus arrangement fees of 1% to 2%, so £200,000 for six months can cost £15,000 or more. For your own home it is a regulated loan and you need an FCA-authorised broker. Only sensible with a short, certain gap and a home that will definitely sell.
• Rent in between. Six months in a rented flat near where you want to be costs a few thousand pounds and lets you try the area. Many downsizers say it was the best decision of the move.

What most downsizers do

Sell first, or sell and buy together in a short chain. The stamp duty surcharge and the cost of bridging make buying first expensive, and a chain-free downsizer with money in the bank is in a strong position to negotiate on the home they want. If you do go for a retirement flat or a new build, ask about part exchange and assisted move, but get your own valuations before you accept a figure.

Timing tips

• Get the house valued and the paperwork ready before you start viewing, so you can move fast when the right place appears. Selling the family home.
• Tell your agent and your solicitor what you are trying to do; they can often steer the timing.
• If you must complete the purchase first, ask your solicitor to explain the surcharge refund process before you exchange.
• Book storage early if there will be a gap; the good firms fill up.

A note on the numbers. Tax thresholds, benefit limits and typical costs are correct as far as we know at the time of writing (2026) and, unless we say otherwise, are for England. Scotland, Wales and Northern Ireland differ in places. Rules change and your circumstances matter. This is information, not advice: check the current position and talk to a solicitor, an FCA-authorised adviser or a tax professional before you act.