Construction loans: funding your building projects

A construction loan is a short term business loan that funds building, renovation or expansion work, with the money released in stages as your project reaches agreed milestones. You only pay interest on the amount you've drawn, and the loan is usually repaid when the finished property is sold or refinanced onto a longer term mortgage. Funding the build itself is only part of the picture for most construction businesses, though. Materials need buying before a job starts, subcontractors and staff need paying as work progresses, and retentions can tie up cash for a year or more after a job is finished. This guide covers how construction loans work, when you might need one, what lenders look for, the other types of finance that suit construction businesses, why so many firms are short of working capital in 2026 and how to put together a stronger application.

What is a construction loan and how does it work?

A construction loan gives you the money to cover land, materials and labour while a building project is underway. A standard mortgage finances a property that already exists. A construction loan keeps cash flowing while the property is still being built, which is when you need it most. Rather than receiving the full amount upfront, you draw the money down in stages. Each drawdown is released when the project reaches an agreed milestone, such as completing the foundations or getting the roof on. A lender will often send a surveyor to confirm the work is done before releasing the next stage. For example, a contractor might draw an initial sum to buy materials and start on site, then claim further drawdowns as the frame goes up and the building is made watertight. Interest only builds up on the money released so far, so you aren't paying for funds you haven't used yet. Most construction loans work in a similar way:

• The loan is usually secured against the land or property being developed.

• Repayments are normally interest only while the build is underway.

• The full amount is repaid at the end, either by selling the finished property or refinancing onto a longer term commercial mortgage.

• Some lenders offer construction to permanent loans, which roll into a mortgage automatically once the build is complete.

When do businesses need a construction loan?

Many businesses use construction loans when a building project is too big to fund from cash in the bank. A loan lets you take on a much larger project than your reserves alone would allow, while keeping your working capital free for the rest of the business.

• You can build new premises such as offices, shops or factories on undeveloped land, or renovate and upgrade a building you already own.

• You can expand your operations by extending existing facilities or converting unused space for business use.

• You can cover land deposits, planning permission costs and initial site preparation before the main build begins.

• You can bridge a funding gap caused by delays, or cover costs until longer term finance is in place or the project is sold.

A retailer might use a construction loan to build a larger warehouse rather than leasing more space, for instance. A developer might use one to finance a multi unit residential scheme that would be impossible to fund from its own cash.

What do lenders look for in a construction loan application?

Lenders want to be confident the project will be finished on time and on budget, and that you'll be able to repay when it is. Most will look at the following.

• Your business credit profile, which lenders rely on heavily to judge how reliably you've managed credit in the past.

• Your deposit and security, since most lenders want a cash contribution upfront and will hold the land or property as security until the build is complete.

• A detailed project plan, including approved planning, budgets, cost estimates, timelines, schedules and your builder's credentials.

• Your track record, as first time developers and newer businesses often face stricter terms, higher fees and slower approvals than firms with completed projects behind them.

• Your financial health, which lenders check through your accounts, cash flow forecasts, existing borrowing and the cash reserves you hold.

Lenders also look closely at how your contracts are structured, how reliable your customers are at paying and how well you manage cash flow across a project. These checks don't stop construction businesses getting finance, but they do mean a clear, well supported application goes a long way.

Which other types of finance work for construction businesses?

A construction loan is designed for building projects, but many of the cash pressures construction businesses face have nothing to do with funding a build. Choosing finance that matches the gap you're trying to fill usually gets you better terms and a faster decision.

Why are construction businesses short of working capital in 2026?

Many construction businesses have enough work in 2026 but not enough cash to deliver it. Demand is uneven, costs are rising and the way construction gets paid means cash often goes out long before it comes back in. Our UK economic outlook for small businesses covers the wider conditions behind these pressures. New build activity is under the most pressure, particularly private residential development, as higher mortgage rates and weaker developer confidence hold schemes back. The government's target of 1.5 million new homes this parliament looks increasingly hard to reach, with around 392,400 net additional homes delivered in England by June 2026, roughly 26% of the target, according to Full Fact's tracker.

Other parts of the market are holding up much better. Repair, maintenance and retrofit work remains steady as more homeowners choose to improve rather than move. Infrastructure output is growing, supported by energy generation contracts and the water industry's 2025 to 2030 investment programme, known as AMP8. Public sector pipelines also tend to sit at the lower risk end of the market.

At the same time, costs are climbing again after easing from their 2021 to 2022 highs. Conflict in the Middle East has pushed up prices for energy intensive materials such as steel, aggregates and cement. A new UK steel trade measure came into force on 1 July 2026, cutting the volume of steel that can be imported tariff free and adding pressure to steel prices. Wages for skilled trades are also rising faster than headline inflation.

That squeeze lands hardest on fixed price contracts. If materials cost more than you priced for, the margin on a job can disappear, and that affects your ability to pay subcontractors, suppliers and staff. Construction recorded 3,866 company insolvencies in the 12 months to August 2026, around 17% of cases where the industry was recorded and more than any other sector, according to Insolvency Service statistics.

Behind many of those failures is a working capital gap rather than a lack of work. Construction has a long cash conversion cycle, so you pay for materials, labour and subcontractors weeks or months before your client pays you. Retentions are often held back for 12 months or more after a job is finished. Stage payments mean you can only invoice at agreed milestones, not as costs build up. That's how a busy firm that's profitable on paper can still run short of cash.

Used well, finance can turn that position around. Nick Richardson, Head of Funding at Capitalise, worked with an installation specialist that imported materials on long lead times and kept losing contracts because it was effectively quoting around its own supply delays. A working capital facility let the business hold stock and commit to firm delivery dates, which put it back in contention for work. As Nick puts it, "Access to capital, rather than demand, is now the binding constraint for these businesses."

The right facility can help you buy materials earlier, quote more competitively and take on work you might otherwise have turned down.

How can you strengthen a construction loan application?

The strongest applications show a lender exactly where your money goes and when it comes back. A few steps before you apply can make a real difference to the terms you're offered.

• Build a cash flow forecast around your project timings, showing when materials, subcontractors, applications for payment and client receipts fall.

• Stress test your figures against rises in the cost of steel, aggregates, cement and other materials before the work is delivered.

• Keep a clear record of your retentions and applications for payment, including how much cash is tied up, when you expect it back and any disputes.

• Check your business credit score before you apply, so you know what a lender will see and have time to fix any errors.

• Credit check your customers and main contractors to spot payment risk early and avoid relying too heavily on one client.

• Compare lenders across the market, since a high street bank may not be the best fit for specialist construction finance.

How do you apply for a construction loan?

Only a limited number of lenders offer construction loans, so using a broker or finance marketplace is often the quickest way to find the right one. The process usually follows these steps.

1. Work out how much you need in total and how it splits across each stage of the build.

2. Gather your project plan, approved planning, cost estimates, accounts and cash flow forecasts.

3. Complete one online application with Capitalise, which uses your business credit score and financial information to match you with suitable lenders.

4. Your application is sent to several lenders at once, so you can compare offers rather than applying to each one separately.

5. A dedicated funding specialist helps you with documents and negotiation until your funding is agreed.

Apply for a construction loan with Capitalise

Getting the right construction loan starts with reaching the right lenders. Capitalise works with a panel of 130+ UK lenders, including specialists who understand staged drawdowns, retentions and the way construction projects get paid. If one lender turns you down, others on the panel may still be able to help, so a single decline doesn't have to hold up your build. A dedicated funding specialist will put your application in front of the lenders most likely to back your project and support you through to drawdown. Whether you're breaking ground on new premises, buying materials ahead of a big contract or freeing up cash tied up in retentions, apply for a construction loan with Capitalise and get your project moving.