First-Time Buyers UK 2026 — Deposits, Mortgages, Schemes and Buying CostsBuying a House With Your Partner UK — Complete Guide
Guide to buying property with a partner in the UK. Joint mortgages, ownership types, protecting your investment, what happens if you split up, and legal considerations.
Buying with a partner is a big financial and legal commitment. Here’s how to protect both of you.
For the wider cluster covering conveyancing, surveys, chains, selling routes and property-purchase decisions, use the main Buying and Selling Property UK hub.
Types of Ownership
Joint Tenants
| Feature | Details |
|---|
| Ownership | Equal 50/50 |
| On death | Automatically passes to other |
| Can’t leave in will | Property passes regardless |
| Selling | Both must agree |
| Best for | Married couples, equal stakes |
Tenants in Common
| Feature | Details |
|---|
| Ownership | Can be any split (e.g., 60/40) |
| On death | Your share passes per your will |
| Need a will | To specify who inherits |
| Selling | Both must agree |
| Best for | Unequal contributions, unmarried couples |
Which to Choose
| Situation | Recommended |
|---|
| Married, equal deposits | Joint tenants |
| Unmarried, equal deposits | Either (consider tenants in common) |
| Unequal deposits | Tenants in common |
| One person paying more | Tenants in common |
| Protecting inheritance | Tenants in common |
Joint Mortgages
How Joint Mortgages Work
| Aspect | Details |
|---|
| Liability | Both equally responsible for full amount |
| If one doesn’t pay | Other must cover it |
| Credit score | Both checked, both affected |
| Income | Combined for affordability |
Important Points
| Consideration | Details |
|---|
| “Joint and several” | Each liable for whole debt |
| Credit link | Created between you |
| Future borrowing | Affects both credit files |
| If split | Mortgage continues until dealt with |
Income Calculation
| Method | How It Works |
|---|
| Combined income | Both salaries added |
| Typical multiplier | 4-4.5x combined income |
| Deposit | Can be from either/both |
Protecting Your Investment
Cohabitation Agreement
| What It Covers | Why Important |
|---|
| Who owns what | Clear if deposits unequal |
| Monthly contributions | Who pays mortgage, bills |
| If you split | How to divide assets |
| Major decisions | Selling, improvements |
| Cost | Expect £500-£1,000 each |
Declaration of Trust (Deed of Trust)
| Feature | Details |
|---|
| Records contributions | Deposit amounts |
| Sets ownership split | Can differ from legal title |
| What happens on sale | How proceeds divided |
| Legally binding | If properly executed |
| Cost | £200-£500 |
When You Need Protection
| Situation | Document Needed |
|---|
| Unequal deposits | Declaration of Trust |
| Living together unmarried | Cohabitation Agreement |
| Complex arrangements | Both documents |
| One person not on mortgage | Declaration essential |
Unequal Contributions
Recording Different Stakes
| Contribution | How to Handle |
|---|
| Different deposits | Tenants in common, document split |
| One pays more monthly | Agree if builds equity share |
| Parental gift | Declare clearly |
| Ongoing disparity | Regular review and update |
Example Scenarios
| Scenario | Fair Approach |
|---|
| £50k + £20k deposits | 71/29 split on sale |
| Equal deposits, unequal payments | Agree ongoing share change |
| One pays all, both on deed | Must document to protect payer |
| Parental help for one | That person’s contribution |
Handling Gifts from Parents
| Consideration | Details |
|---|
| Is it gift or loan? | Document clearly |
| Mortgage declaration | Lender needs gift letter |
| Ownership impact | Usually benefits recipient |
| Put in writing | Avoid future disputes |
The Buying Process Together
Getting Mortgage Ready
| Step | Both Need To |
|---|
| Check credit scores | Free services available |
| Save deposit | Agree who contributes what |
| Reduce debts | Improves affordability |
| Stable income | Lenders want to see this |
Key Decisions
| Decision | Why Important |
|---|
| Budget | Don’t overstretch together |
| Location | Both need to agree |
| Property type | Lifestyle match |
| Ownership type | Protect both interests |
Documents Needed (Both)
| Document | Purpose |
|---|
| ID | Proof of identity |
| Address proof | Utility bills, statements |
| Payslips (3 months) | Income evidence |
| Bank statements (3-6 months) | Spending, savings |
| Employment contract | If recently changed |
What If You Split Up?
Without Legal Agreement
| Outcome | What Happens |
|---|
| Ownership | Per Land Registry (usually 50/50) |
| Contributions | Hard to prove mattered |
| Courts | Expensive, uncertain outcome |
| Deposit disparity | May be lost |
With Proper Documentation
| Outcome | What Happens |
|---|
| Ownership | As per Deed of Trust |
| Contributions | Already agreed |
| Resolution | Clearer, cheaper |
| Protection | For both parties |
Options If Splitting
| Option | Considerations |
|---|
| Sell property | Split proceeds per agreement |
| One buys out other | Needs new mortgage |
| Continue as is | Rarely practical |
| Rent out | May need lender consent |
Buying Out a Partner
| Step | Details |
|---|
| Agree valuation | Joint or independent |
| Calculate buyout | Per ownership share |
| New mortgage | Affordability on one income |
| Transfer of equity | Legal process |
| Stamp duty | May apply |
Special Situations
When Only One Name Is on Mortgage
| Situation | What It Means |
|---|
| One on mortgage | That person fully liable |
| Both on deed | Both own (as chosen) |
| Deed of Trust | Protects non-mortgaged party |
| Mortgage payments | Doesn’t automatically create ownership |
When One Partner Has Bad Credit
| Option | Details |
|---|
| Solo mortgage | Better credit partner alone |
| Wait and improve | If time allows |
| Specialist lenders | Higher rates |
| Guarantor | If family can help |
Already Own Property
| Partner’s Situation | Impact |
|---|
| One already owns | May face second home SDLT |
| Selling to buy together | May need timing coordination |
| Keeping as BTL | Affects affordability |
Summary: Buying Together Checklist
Before Looking
| Action | Done |
|---|
| Discuss budget honestly | ☐ |
| Check both credit scores | ☐ |
| Agree ownership type | ☐ |
| Discuss what if scenarios | ☐ |
During Purchase
| Action | Done |
|---|
| Joint mortgage application | ☐ |
| Decide joint tenants/tenants in common | ☐ |
| Get Deed of Trust (if unequal) | ☐ |
| Consider cohabitation agreement | ☐ |
Documents to Get
| Document | Who Provides |
|---|
| Deed of Trust | Solicitor |
| Cohabitation Agreement | Family solicitor |
| Gift letters | From family |
| Wills (if tenants in common) | Solicitor |
Key Questions to Agree
| Topic | Your Answer |
|---|
| How much each contributing? | £_____ / £_____ |
| Ownership split? | _____% / _____% |
| Who pays mortgage? | |
| Who pays bills? | |
| What if one loses job? | |
| What if we split? | |
| What if one wants to sell? | |
Buying together requires open conversations and proper documentation. It may feel awkward to discuss breakup scenarios when you’re excited about buying together, but getting this right protects both of you.
aliases:
- /mortgages/first-time-buyers/buying-with-partner-guide/
Your home may be repossessed if you do not keep up repayments on your mortgage. PocketWise provides information and guidance — we do not offer financial advice. Seek independent mortgage advice before making decisions about borrowing.
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