The standard legal route to change ownership shares on a UK property is a transfer of equity, completed using a TR1 deed and an AP1 application to HM Land Registry. If a mortgage exists, you will need lender consent before anything is signed, and most people involve a solicitor to manage the process correctly. Where the new split will be unequal, a declaration of trust should be drawn up alongside the TR1 to protect each person's financial share.
TL;DR:
- Most transfers of equity require lender consent, with remortgage or affordability checks being common conditions before approving ownership changes.
- Filing the correct forms precisely, especially matching names on the TR1 to the current title, is essential to avoid delays in Land Registry registration.
- A declaration of trust is vital to enforce unequal ownership shares and should always be updated alongside the transfer paperwork to prevent disputes.
- Costs beyond legal fees include Stamp Duty Land Tax if consideration involves money or mortgage shares, as well as possible capital gains tax and remortgage fees.
- Early communication with the lender and detailed planning, including a clear ownership split and proper trust documentation, streamline the entire process.
Table of Contents
- What is a transfer of equity, and when do you need one?
- How do you file the forms for a share change?
- Will your mortgage lender allow a change in ownership shares?
- What will a share change cost in tax and fees?
- Why does a declaration of trust protect your share?
- What is a realistic checklist and timeline for the whole process?
- Martin (Cohaus) on fair split strategies in co-buying
- How Cohaus supports co-buyers through this process
- Sources
- FAQ
What is a transfer of equity, and when do you need one?
A transfer of equity is the legal mechanism for adding, removing, or rebalancing the owners on a property's title without a full sale. Co-buyers use it when one partner buys out another, when a friend joins an existing mortgage, when a relationship ends, or when someone wants to gift a share to a family member.
It helps to separate two things that people often conflate. HM Land Registry's register shows who legally owns a property, but it does not record the percentage split between those owners. That percentage split, known as the beneficial interest, sits in a separate document.
This is where the type of ownership matters:
- Joint tenants own the whole property together with no defined shares, and the property passes automatically to the survivor.
- Tenants in common hold defined, individual shares, which can be equal or unequal and can be left to anyone in a will.
If you are changing to unequal shares, you almost always need to hold the property as tenants in common and back it with a declaration of trust, because that trust document is what actually protects your percentage on sale.
How do you file the forms for a share change?
Most whole-property transfers use Form TR1, which records who is transferring the property and to whom. If only part of the land is changing hands, a TP1 applies instead, though that is uncommon for a straightforward ownership-share change between co-buyers.
Once the TR1 is signed, it needs to reach HM Land Registry through Form AP1, the application that actually updates the register.
- Complete the TR1, naming all existing and incoming owners exactly as they appear on the current title.
- Draft a matching declaration of trust if shares are unequal, and sign it alongside the TR1.
- Complete an ID1 form for any party not represented by a conveyancer, to satisfy Land Registry identity checks.
- Submit the AP1 application with the TR1, trust deed, and any lender documentation attached, listing the transfer before any linked charge application.
- Pay the applicable Land Registry fee, based on the property's value, and wait for confirmation of the updated register.
Solicitors submit most AP1 applications digitally through a conveyancer portal, which is faster than postal submission and reduces the chance of a rejected application because the portal enforces the correct order and required attachments.
Pro Tip: Double-check that names on the TR1 match the current title register letter for letter. A mismatched middle name or an old address is one of the most common reasons Land Registry queries an application and delays registration by weeks.
Will your mortgage lender allow a change in ownership shares?
Lender consent is not automatic, and you should never assume it will be granted just because the change seems minor to you. Where a mortgage is still running, lenders generally need to approve any change to who is on the title, because it affects who is legally responsible for repaying the loan.
Expect one of a few outcomes once you contact your lender:
- Consent granted with no change to the existing mortgage terms.
- A requirement to remortgage, which can mean a new interest rate and different monthly payments.
- A request for updated affordability checks on the remaining or incoming owner.
- Outright refusal, particularly if the remaining owner cannot demonstrate they can afford the mortgage alone.
Lenders treat this as a significant event and have discretion over how they respond, so the earlier you raise it, the better.
Pro Tip: Get a provisional response from your lender before your solicitor drafts the TR1. Signing deeds first and discovering afterwards that the lender wants a remortgage wastes legal fees and can stall the whole transfer.
What will a share change cost in tax and fees?
Stamp Duty Land Tax, or Land Transaction Tax in Wales, can apply to a transfer of equity if money changes hands or if the incoming owner takes on a share of an outstanding mortgage, because that mortgage assumption counts as consideration. Where SDLT is due, you must file the return within 14 days of completion.
Fourteen days is not long once you factor in solicitor turnaround and lender paperwork, which is why most conveyancers start the SDLT calculation at the same time as drafting the TR1, rather than waiting until completion.
Budget for these costs beyond the tax itself:
- Solicitor or conveyancing fees for handling the transfer.
- The Land Registry registration fee, scaled to the property's value.
- Capital gains tax exposure if the property is not your main residence, since a transfer between co-owners can trigger a taxable gain on the portion sold.
- Any lender arrangement or remortgage fee if consent comes with new terms.
Why does a declaration of trust protect your share?
Land Registry will register you as a legal owner, but it will not enforce your financial percentage if a dispute arises on sale, because it simply does not record those figures. A declaration of trust is the document that does that job, and conveyancers typically draft it alongside the TR1 so both are signed at the same time.
A well-drafted trust deed usually sets out:
- The specific shares each person holds.
- Contributions made, including deposits and ongoing mortgage payments.
- How the property will be valued and divided if one owner wants to leave or if the property is sold.
- Provisions for situations where one owner falls behind on payments.
Pro Tip: Update your will whenever you sign a new declaration of trust. A trust deed sets your financial share, but if your will still names an old distribution of the property, the two documents can contradict each other and cause a genuinely painful dispute for whoever is left sorting it out.
Keep the signed original somewhere both parties can access, and give a copy to your mortgage lender if requested. If the property is leasehold, factor in a Notice of Transfer and possibly a deed of covenant to the freeholder or managing agent, which can add several weeks if you leave it until the last minute.
What is a realistic checklist and timeline for the whole process?
Before instructing anyone, confirm three things: the exact wording on your current title, the outstanding mortgage balance and lender name, and whether the property is leasehold with a freeholder who needs notifying. Agree the consideration, if any, between the parties before your solicitor starts drafting.
- Instruct a solicitor and share the current title, mortgage details, and agreed terms.
- Contact the lender for provisional consent before any deed is drafted.
- Draft the TR1 and, where shares are unequal, the declaration of trust in parallel.
- Sign and complete, then submit the SDLT return within 14 days if tax is due.
- Submit AP1 to Land Registry with TR1, trust deed, and ID1 as needed.
- Receive registration confirmation, then check the updated title copy for accuracy.
| Stage | Typical driver of delay |
|---|---|
| Lender consent | Affordability checks or remortgage requirement |
| TR1 drafting | Mismatched names against current title |
| Leasehold notice | Freeholder response time and covenant fees |
| AP1 submission | Missing ID1 or incorrect application order |
Martin (Cohaus) on fair split strategies in co-buying
We built Cohaus around the reality that most disputes between co-buyers do not start with the property. They start with deposits that were never equal and never written down properly. If one person put in more upfront, that needs recording in a trust deed from day one, not agreed on a handshake and revisited during a break-up.
Fair does not mean equal. It means matching the paper to the money, then keeping an open exit route so no one feels trapped if circumstances change.
— Martin
How Cohaus supports co-buyers through this process
There are platforms designed for people who want to buy together, split contributions fairly, and know their share is protected on paper from the outset.
Such platforms can help you find compatible co-buyers, structure pooled deposits, and set clear legal protections and exit terms before you sign a TR1. Reading through the guidance on unequal deposits and fair splits is a sensible starting point if you are still working out what percentage each person should hold. None of this replaces a solicitor. You will still need one to complete the TR1, AP1, and any declaration of trust, but Cohaus gets the groundwork right before that legal work even begins. Visit Cohaus to register your interest and see how co-buying could work for you.
This article is general information, not a substitute for advice from a qualified lawyer. Consult a qualified legal professional about your own circumstances before acting on anything here.
Sources
- Legal estates and beneficial interests – what's the difference? (HM Land Registry blog)
- Registered Titles: whole transfer (TR1) – guidance for completing form TR1
- How to complete and submit Form AP1: Application to change the register
- Transfer of equity: Key considerations and process
FAQ
Do I need a solicitor to change ownership shares?
You are not legally required to use one for a simple transfer, but most lenders and Land Registry applications go far more smoothly with a solicitor, especially where a mortgage is involved.
Does Land Registry record my percentage share?
No. HM Land Registry records who the legal owners are, not the percentage split, which is why a declaration of trust is the document that actually protects unequal shares.
How long does a transfer of equity take?
Straightforward gift cases can complete in a few weeks, but leasehold notices, lender consent, and AP1 processing times commonly stretch the timeline to several weeks or longer.
Will I pay Stamp Duty Land Tax on a share change?
SDLT or Land Transaction Tax can apply if money changes hands or if you take on a share of an existing mortgage, and any return due must be filed within 14 days of completion.
Can Cohaus help me split ownership before I buy?
Yes. Cohaus helps prospective co-buyers agree fair splits, pool deposits, and put legal protections in place before a property purchase, alongside the solicitor work needed for the formal transfer.