A first purchase normally becomes harder in the same few places: buyers focus on the deposit and forget the other costs, treat an Agreement in Principle as if the mortgage is already done, or lose time on schemes that are no longer open to new applicants.
The stronger approach is to keep the full case together from the beginning:
- the monthly payment you can live with
- the deposit you can evidence
- the side costs you still need to fund
- the mortgage paperwork you will need once the offer is accepted
- the schemes that are live now rather than the ones people still mention from older articles
If you want to test the numbers while you read, pair this guide with the Affordability Planner, Fees and Costs Calculator and Stamp Duty Calculator.
1. Build the purchase budget before you start chasing a property
Most first-time buyers talk first about the purchase price. In practice, the cleaner starting point is the monthly payment you can sustain without stretching the rest of your life too thin.
Many lenders use around 4.5 times annual income as a rough reference point, but that is only a starting line. The actual offer can still move with:
- regular spending
- existing credit commitments
- deposit size
- credit history
- the property itself
That is why a first-time buyer budget works best in this order:
- decide what monthly payment still leaves room for the rest of your budget
- estimate the likely borrowing range
- add the deposit
- check the full buying costs before deciding the real price ceiling
2. Treat the deposit as one part of the cash plan, not the whole plan
Many buyers begin by testing whether they can reach at least a 5% deposit. A 10% deposit can widen lender choice further, and larger deposits can improve pricing again.
The deposit examples below are simple, but they are useful because they show how quickly the cash target moves as the purchase price rises:
| Property price | 5% deposit | 10% deposit |
|---|---|---|
| £200,000 | £10,000 | £20,000 |
| £300,000 | £15,000 | £30,000 |
| £400,000 | £20,000 | £40,000 |
The more expensive mistake is assuming the deposit is the only money that matters.
Buying a home can still involve more than £5,000 in fees before you even add the deposit and any Stamp Duty Land Tax. The exact figures vary, but buyers normally need room for items such as:
- mortgage fees
- valuation and survey costs
- legal work and searches
- removals
- insurance and other setup costs
The deposit gets you into the conversation with the lender. The rest of the cash plan gets you through to completion without the purchase becoming fragile.
3. Use an Agreement in Principle to get offer-ready, not to guess final approval
An Agreement in Principle is a lender’s early view of what it may be willing to lend before the full application. It is useful because it helps you:
- house-hunt with a working borrowing range
- show sellers or estate agents that you are prepared
- spot obvious affordability problems before legal costs start
It is still only an early-stage estimate.
The lender can still change its view once the full case is assessed in detail. That later decision can depend on:
- the property valuation
- your income evidence
- the source of the deposit
- your bank statements and credit profile
- any details that were not visible at the Agreement in Principle stage
Another detail worth checking early is the type of credit search. Some lenders use a soft search and others use a hard search, so the practical question is not only whether you can get an Agreement in Principle quickly. It is whether repeated applications will leave unnecessary marks on your file.
4. Do not confuse an Agreement in Principle with the mortgage offer
One of the easiest ways to lose momentum is to treat the Agreement in Principle as if the lender has already committed.
A full mortgage offer is different because the lender is then assessing the whole case, including the property it is being asked to lend against. Even a straightforward purchase can take time once valuation, underwriting and legal work begin.
That is why first-time buyers usually move more smoothly when they have the core paperwork ready before the offer is accepted, including:
- proof of identity and address
- recent payslips or other income evidence
- bank statements
- proof of deposit
- gifted-deposit paperwork where relevant
- tax forms and supporting records if the applicant is self-employed
The cleaner the paperwork, the easier it is to move from a rough borrowing idea to a formal offer.
5. Keep stamp duty and buying costs inside the same budget
First-time buyer relief in England and Northern Ireland still has a clear structure:
- 0% on the first £300,000
- 5% on the portion from £300,001 to £500,000
- no first-time buyer relief if the purchase price is above £500,000
That means a buyer purchasing at £400,000 would currently pay:
- £0 on the first £300,000
- £5,000 on the remaining £100,000
That single example matters because it shows why first-time buyer relief is not the same thing as paying no stamp duty.
If the purchase price sits near a relief edge, run the number precisely instead of relying on memory. A purchase can move from “no SDLT” to a material tax bill more quickly than many buyers expect.
6. Separate live first-time buyer routes from legacy products
The scheme landscape is much easier to use when you sort it into two groups:
- routes that can still help a new buyer now
- legacy products that still matter only if you already hold them
Lifetime ISA
The Lifetime ISA remains one of the main live savings routes for first-time buyers. The key points are:
- you can contribute up to £4,000 each tax year
- the government bonus is 25%, up to £1,000 a year
- the property must cost £450,000 or less
- the account must have been open for at least 12 months before a penalty-free first-home withdrawal
Timing matters here. Opening the account only after you begin viewing homes can be too late for the purchase you actually want to make.
First Homes
First Homes is a live route in England for eligible buyers. The headline rules that matter most are:
- the discount is 30% to 50% off market value
- buyers must be first-time buyers
- household income must usually be no more than £80,000, or £90,000 in London
- you must get a mortgage for at least 50% of the purchase price
This is one of the schemes where local rules matter. The national framework is only the start of the answer.
Shared Ownership
Shared Ownership remains a live affordable-home-ownership route. In broad terms, it is aimed at households that cannot afford all of the deposit and mortgage payments for a suitable home, with income limits of £80,000 outside London and £90,000 in London.
Buyers normally purchase a share of 10% to 75% of the home’s market value and pay rent on the remainder. That changes the shape of the budget, so it should be treated as a different ownership route rather than a normal purchase with a smaller deposit.
Help to Buy ISA and Help to Buy: Equity Loan
These routes still appear in online discussions, but they do not serve the same purpose today.
The Help to Buy ISA is a legacy savings product. You can no longer open one, although existing savers can still pay in until November 2029 and claim the bonus until November 2030.
The Help to Buy: Equity Loan in England is closed to new applicants. It remains relevant only for borrowers who already have one and are managing the loan later.
If you also hold both a Lifetime ISA and a Help to Buy ISA, only one government bonus can be used towards the same purchase.
7. Know the difference between the valuation and the survey
A lender’s valuation is not the same thing as a survey you commission for your own peace of mind.
The valuation is primarily there for the lender. It is checking whether the property is suitable security for the mortgage. It is not a full inspection of the building’s condition.
That difference matters most when the property is older, has visible issues, or would be expensive to repair after completion. Budgeting separately for the survey decision is usually safer than assuming the lender’s valuation tells you everything you need to know.
8. A cleaner first-time buyer plan
If you want a working order for the whole process, use this one:
- set the monthly budget before deciding the target purchase price
- build the deposit and side-cost plan together
- get an Agreement in Principle and check the search type
- confirm which schemes are live and which are legacy only
- keep SDLT, legal costs and survey costs inside the same decision
- line up the paperwork early so the full mortgage application can move quickly
That sequence does not make the purchase easy on its own. It does stop the most common first-time buyer problems from piling up at the same moment.
Where to go next
- Use the First-Time Buyer Advice page if you want the route-page version of the same topic.
- Use the Affordability Planner to test the monthly budget.
- Use the Fees and Costs Calculator to separate the deposit from the rest of the cash requirement.
- Use the Stamp Duty Calculator if the purchase price is anywhere near a tax threshold.