Buying a house with a partner is a major step: part financial decision, part relationship decision, and usually the largest commitment either of you has made. Finding a home you both like matters, but the details behind the purchase matter just as much. How you own it, what each person contributes and what happens if circumstances change should be clear before you offer.
For buyers across South East London, this conversation can make the process feel more controlled rather than less romantic. A good plan does not assume the worst. It protects both people, gives your solicitor clear instructions and leaves you free to focus on the right home.
Start with an honest financial picture
Before arranging a long list of viewings, sit down and compare your finances in full. This is more than combining two salaries to see what a lender may offer. Discuss savings, existing debts, regular commitments, credit history and future plans such as parental leave, a career change or supporting family.
Mortgage affordability is based on the lender’s assessment, not simply on what feels manageable today. Interest rates, the length of the mortgage and household outgoings all affect the figure. It is sensible to create your own monthly budget too, including council tax, service charges for a leasehold flat, buildings insurance, utilities, commuting and a realistic allowance for repairs.
Agree what you are comfortable spending, not just the maximum you could borrow. A home that leaves no room for maintenance, holidays or an unexpected bill can quickly become a source of pressure.
Decide how you will own the property
When buying a house with a partner, the key legal choice is usually whether to own as joint tenants or tenants in common. The names sound similar, but the outcome can be very different.
Joint tenants
Joint tenants each own the whole property together. If one owner dies, their share automatically passes to the other, regardless of what their will says. This arrangement is often suitable for couples contributing equally who want the property to pass directly to the survivor.
It does not mean each person owns a defined 50 per cent share that can be left to someone else. That distinction is worth understanding from the outset.
Tenants in common
Tenants in common each own a specified share, which can be equal or unequal. For example, one person may own 60 per cent because they contributed a larger deposit, while the other owns 40 per cent. Each owner can leave their share under their will rather than it passing automatically to the co-owner.
This can be the more appropriate route where contributions are unequal, one buyer has children from a previous relationship or family money is being used. It requires clear paperwork and thoughtful estate planning, particularly if you would still want your partner to remain in the home if you died.
Your conveyancing solicitor can explain the legal position and record the ownership correctly. Do not treat this as a box to tick late in the transaction. Changing arrangements later can be possible, but it adds cost and complication.
Put unequal contributions in writing
A larger deposit does not automatically give one person a larger entitlement to the sale proceeds. Nor does paying more towards the mortgage always create the outcome either partner expects. If you are putting in different amounts, instruct your solicitor to prepare a declaration of trust.
This document records the agreed shares and can set out what happens when the property is sold. It may state that each person receives their original deposit back first, with any remaining equity divided in agreed proportions. Or it may confirm fixed ownership shares from day one.
There is no single best formula. A couple expecting to share all household costs over many years may choose a different arrangement from buyers where one partner is using a significant inheritance. What matters is that the agreement reflects the reality you both understand and accept.
Keep a clear record of any money given by parents as well. Is it a gift, a loan, or an investment that should be returned on sale? Mortgage lenders and solicitors will need to know, and vague family arrangements can cause delays during conveyancing.
Understand the mortgage responsibility
A joint mortgage usually means joint and several liability. In plain English, each borrower is responsible for the whole debt, not simply their perceived half. If one person cannot pay, the lender can pursue the other for the full monthly payment.
That is why it is worth discussing a practical back-up plan before exchange of contracts. Could either of you cover the mortgage temporarily if the other lost their job? Do you have savings set aside? Would income protection or life insurance be appropriate for your situation?
You should also be open about credit commitments. An undisclosed loan, missed payment or financial link from a previous relationship may affect the application. Being candid before applying gives you more options than discovering an issue after you have found a property you love.
Agree the everyday costs before moving in
The purchase price and deposit get the attention, but day-to-day costs are where misunderstandings often begin. Decide how you will handle the mortgage, bills, groceries, maintenance and larger improvements.
Some couples split everything equally. Others divide costs based on income, particularly where one partner earns substantially more. Either approach can work if it feels fair to both people and is reviewed when circumstances change.
It helps to use a joint account for agreed household costs while retaining personal accounts for individual spending. Set a monthly contribution, build a small home-repair fund and decide what needs joint approval. Replacing a broken boiler is different from choosing to refurbish a kitchen.
Choose a home that works for both lives
A property search can reveal different priorities quickly. One person may value a shorter commute, while the other wants outside space, a spare room or proximity to family. In areas such as Woolwich, Plumstead, Abbey Wood and Eltham, the balance might also involve transport links, school catchments, parking, local high streets and the amount of work a property needs.
Make two lists: essentials and preferences. Essentials could include a maximum journey time, minimum bedroom number or a firm budget. Preferences might be a south-facing garden, period features or being close to a particular station. This stops every viewing becoming a negotiation over points that are not equally important.
Be realistic about renovation too. A lower asking price may leave room to improve a home, but only if you have the budget, time and appetite for the disruption. Agreeing to a project is not the same as agreeing who will organise builders, pay for materials and live with the mess.
Plan for the difficult possibilities
Nobody buys a home expecting a separation, illness or bereavement. Yet a few clear discussions now can avoid a much harder situation later. Alongside a declaration of trust, unmarried couples may want a cohabitation agreement covering contributions, bills and what happens if one person wishes to sell.
Wills are also essential, especially for tenants in common. Without the right planning, your share may not go where you assume. If you are married or in a civil partnership, the legal position can differ, so obtain advice tailored to your circumstances.
Talk through practical scenarios: what if one person wants to move, what if you need to let the property, and what if major repairs arise shortly after completion? You do not need to predict every eventuality. You do need a shared way of making decisions when the stakes are high.
Use the right professional support
A mortgage adviser can help you assess borrowing options, while a conveyancing solicitor should be told early about unequal deposits, gifted funds, intended ownership shares and any agreement you want recorded. Leaving these details until just before exchange can slow the transaction down.
A local estate agent can also help you judge whether an asking price reflects the property, its condition and the immediate area. At Hi Residential, we see that buyers make stronger decisions when they understand both the home and the financial commitment behind it.
The best time to have the awkward conversations is before you find the property that makes you want to rush. Agree the principles, record them properly and then let the search become the exciting part: choosing a home that gives both of you a solid place to build from.
