What Is a Deed of Trust for Property UK — Complete Guide
What a deed of trust is, when you need one for property in the UK, how it works, costs, and what to include. Essential guide for unmarried couples and unequal contributions.
·6 min read
A deed of trust is one of the most important documents you can have when buying property with another person — especially if you are not married. Here is when and why you need one.
What Is a Deed of Trust?
Detail
Information
Also known as
Declaration of trust, trust deed
What it does
Records who owns what percentage of a property
When it is made
Usually at the time of purchase (but can be created later)
Who needs one
Anyone buying with another person and contributing unequal amounts
Legally binding?
Yes — enforceable through the courts
Registered?
Can (and should) be registered at the Land Registry as a restriction
When You Need a Deed of Trust
Situation
Why you need it
Buying with a partner (unmarried) and paying unequal deposits
Protects the person who paid more
Parents helping with the deposit
Documents whether it is a gift or loan, and what share the parents (or their child) own
Buying with friends
Clarifies ownership shares and obligations
One person paying the mortgage while the other contributes less
Reflects actual financial contributions
Investing in someone else’s property
Records your financial interest
Protecting assets you brought into a relationship
Documents pre-existing equity
Joint Tenants vs Tenants in Common
Feature
Joint tenants
Tenants in common
Ownership shares
Equal (always 50/50 regardless of contributions)
Defined shares (can be any split)
Right of survivorship
Yes — if one owner dies, the other automatically inherits
No — each share passes according to their will
Deed of trust needed?
Less relevant (shares are equal by definition)
Essential — defines the actual ownership shares
Best for
Married couples who want everything to pass to the survivor
Unmarried couples, friends, investment partners
Severance
Can be converted to tenants in common
N/A
Most unmarried couples buying together should be tenants in common with a deed of trust.
What a Deed of Trust Should Cover
Section
What to include
Ownership shares
Each person’s percentage ownership
Deposit contributions
Who paid what towards the deposit
How shares change over time
Do mortgage payments change the shares? (Fixed shares vs floating shares)
Sale triggers
When can a sale be forced? What happens if one person wants to sell and the other doesn’t?
Running costs
Who pays the mortgage, insurance, maintenance, and what happens if one person stops paying?
Improvements
Does spending on improvements change ownership shares?
Dispute resolution
Mediation before legal action
Buyout provisions
Can one person buy the other out? How is the price determined?
Death of an owner
What happens to their share?
Fixed Shares vs Floating Shares
Type
How it works
Best for
Fixed shares
Ownership shares stay the same regardless of who pays the mortgage over time
Simple, clear, less administration
Floating shares
Ownership shares change as each person makes mortgage payments or contributions
Fairer if one person is paying significantly more over time
Fixed Share Example
Detail
Person A
Person B
Deposit contributed
£40,000
£10,000
Mortgage payments
Split 50/50
Split 50/50
Ownership share
60%
40%
On sale (house sells for £300,000)
£180,000
£120,000
Floating Share Example
Detail
Person A
Person B
Deposit contributed
£40,000
£10,000
Total mortgage paid (over 5 years)
£30,000
£18,000
Total contribution
£70,000
£28,000
Ownership share
71.4%
28.6%
On sale (house sells for £300,000, after repaying £152,000 mortgage balance)
£105,700 (71.4% of £148,000 equity)
£42,300 (28.6% of £148,000 equity)
Floating shares are fairer but require careful record-keeping and clear tracking methods in the deed.
How to Get a Deed of Trust
Option 1: Through Your Conveyancing Solicitor
Detail
Information
When
At the time of purchase — easiest and cheapest
Cost
£200–£500 (as part of the conveyancing process)
Advantages
Solicitor already has all the details, land registry restriction included
Option 2: After Purchase
Detail
Information
When
If you did not get one when you bought
Cost
£300–£800
Process
Both parties appoint a solicitor (ideally independent solicitors), agree terms, sign the deed
Land Registry
Should be registered as a restriction — protects your interest
Option 3: Online Legal Service
Detail
Information
Cost
£50–£200
Advantages
Cheaper, quick
Disadvantages
May not cover complex situations, limited personalised advice
Suitable for
Very simple arrangements with clear terms
Registering at the Land Registry
Detail
Information
Why register?
Puts a “restriction” on the property — prevents sale or remortgage without all parties’ consent
Cost
£40 (Form RX1)
How
Your solicitor submits the restriction to the Land Registry
What it prevents
The property cannot be sold, transferred, or mortgaged without the consent of all named parties
Is it required?
Not legally required but strongly recommended
When Parents Help with the Deposit
Arrangement
Deed of trust should record
Gift to child
That it is a gift with no repayment obligation — child’s share reflects the gift
Loan to child
The loan amount, repayment terms, and interest (if any)
Investment (parent holds an ownership share)
Parent’s percentage ownership and what happens when the property is sold
Gift to couple
Who the gift is intended for — one person or both
Mortgage Lender Requirements
Detail
Information
Lenders need to know about the deed of trust
It creates a beneficial interest — this must be declared
Impact on the mortgage?
Usually none, provided all parties agree
Gift vs loan
Lenders prefer gifts (no repayment affects affordability) — loans may reduce borrowing capacity
Gifted deposit letter
Most lenders require a letter confirming the gift with no repayment expected
Changing or Ending a Deed of Trust
Situation
Process
Both parties agree to change the terms
Create a new deed of trust or a deed of variation — both should take independent legal advice
Property is sold
The deed of trust governs how the proceeds are split
One party wants to buy the other out
Independent valuation, then follow the buyout provisions in the deed
Relationship breakdown (unmarried)
The deed of trust determines each person’s share — if there is a dispute, mediation then court
Divorce
The court can override the deed of trust as part of the financial settlement
Costs Summary
Item
Cost
Deed of trust (at purchase)
£200–£500
Deed of trust (after purchase)
£300–£800
Land Registry restriction (Form RX1)
£40
Online template
£50–£200
Independent legal advice (each party)
£150–£300 per person
Common Mistakes
Mistake
Consequence
Not getting a deed of trust at all
If you split up, you may lose money — especially if unmarried
Not registering at the Land Registry
Your interest is not protected against sale or remortgage
Not taking independent legal advice
The deed may not be enforceable if one party was not properly advised
Not updating after changes (e.g. one person pays off more mortgage)
Shares may not reflect reality
Using a joint tenants arrangement when you should be tenants in common
Your shares are forced to be 50/50 regardless of contributions