We built a free calculator that turns selling one home and buying the next into equity released, cash to complete, what is left over, and the new repayment — all on one screen.
Try it yourself first: the Selling & Buying Again calculator. It is free, nothing your client types is saved or sent, and it takes about a minute to see where they stand.
Every week I talk to someone who is selling one home and buying the next, and underneath every question is the same worry: will there be enough? It is a hard thing to picture. There are two settlements, equity that is locked up until the sale goes through, and a mortgage repayment on the new place that does not exist yet. Most people end up guessing, or rebuilding the same spreadsheet from scratch every time the asking price moves.
So we built a tool that puts the whole move on one screen. Your client types in what their current home should sell for and what the next one costs, and it works out the four numbers that actually answer the question — then lets them push the prices around and watch everything update.
THE FOUR NUMBERS
Strip a sell-and-buy back and it comes down to four figures.

ONE MOVE, START TO FINISH
Take a home selling for $900,000 with $420,000 still owing, and a next place at $1,150,000 with a $700,000 loan. The tool clears the mortgage, takes off about $33,000 of agent and legal costs, and shows $446,968 of equity coming out of the sale.

That equity then has to stretch across the purchase. Against a $452,500 cash-to-complete, this client is about $5,500 short — useful to know now, not on settlement morning. Nudge the sale price up by $10,000, or the purchase down, and they watch the gap close.

The numbers here are an example, not a quote. The point is the shape: your client sees the whole move in one place and can test it before they commit to anything.
THE BITS THAT CATCH PEOPLE OUT
Two things trip up a sell-and-buy more than anything else, and the tool handles both. If the purchase settles before the sale does, there is a tick box that estimates the bridging cost of owning both homes for a few weeks. And if the deposit is coming out of the sale rather than from separate savings, another tick box stops that money being counted twice — so what is left over stays honest.
WHY THIS MATTERS FOR YOU
When a client can see the move, the conversation changes. Instead of “I think it works,” you are both looking at the same four numbers.
Open the Selling and Buying Again calculator →
It is a planning tool, not advice and not a loan offer. HouseMe Legal is a law firm, not a financial adviser — what a client can actually borrow is your call and the bank’s. The real settlement figures come from us, in the settlement statement.
