Article 5 of 9·Money 6 min read
Co-buying vs. staying in the rental trap: a 10-year comparison
Renting isn't just expensive — it keeps moving the finish line. Here's a decade of rent next to a decade of co-owning, and the break-even point almost nobody works out.
The finish line keeps moving
The painful part of renting isn't only the monthly cost. It's that you save whatever's left after the rent, while the deposit you're chasing grows with house prices.
Save 10% of a rising number and the gap can get wider even as your savings go up. That's the trap.
Co-buying goes straight at that problem: two to four people reach a given deposit far sooner than one person ever will.
Ten years, side by side
Renting: rent every month, creeping up over time, plus deposits and moving costs every couple of years. After ten years you've spent a lot and own nothing.
Co-buying: mortgage interest and capital, insurance, maintenance of roughly 1% of the value a year, plus the up-front costs of stamp duty, legal fees and a survey. After ten years a real chunk of the loan is paid off and any price rise belongs to you.
The honest comparison isn't rent versus mortgage payment. It's total housing spend versus total housing spend, treating equity as money you get back.
Ten years renting
- •Rent every month, rising over time
- •New deposit and moving costs every few years
- •No repairs bill — that's the landlord's job
- •Easy to move at short notice
- •Equity at the end: zero
Ten years co-owning
- •Mortgage payments, part interest and part yours
- •Stamp duty, legal fees and survey up front
- •Repairs and maintenance, roughly 1% of value a year
- •Harder and slower to move
- •Equity at the end: a real chunk of the home
Illustrative. Your own numbers depend on your city, your rate and the state of the property.
Where the break-even usually sits
For most UK buyers, buying overtakes renting somewhere between year three and year six — once the up-front costs have been absorbed.
Under three years, the buying and selling costs usually swallow any gain, and renting wins.
That timeline shifts with your city, whether prices rise or stall, and how much work the property needs. Run it on your own numbers rather than a national average.
A general pattern, not a prediction. A falling market pushes the break-even further out.
The risks worth being honest about
Prices can fall. Rates can jump when your deal ends. A co-buyer can leave. And owning is far less flexible than renting, which genuinely matters if your job or life might move.
The point isn't that buying always wins. It's that most people never actually compare the two over a realistic stretch of time, and end up renting by default rather than by choice.
Tap a card to flip it over.
Quick check — 4 questions
Every answer is in the article above. Get 3 of 4 right to complete the quiz — sign in to save your score.
1. Why does renting keep moving the finish line?
2. Roughly what should you budget yearly for maintenance when you own?
3. Where does the break-even between renting and buying usually sit?
4. Which claim is a myth?
Talk this through with the community
Nothing here is advice for your situation. Bring your questions to other locked-out buyers working through the same decisions.
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