You know the feeling? The concrete truck is on site, the bricklayers are waiting to get paid, you need to order bricks for the next floor... but your account is empty. You want the bank to release the next tranche of your mortgage, and it has one clear condition: "Prove what you've built with the money so far."

Drawing down a mortgage in stages is standard when you're building yourself. For many self-builders it's also the biggest source of stress. You're flat out on site, then spend your evenings hunting for lost receipts and trying to match photos to your budget in Excel.

Here's how to prepare the paperwork for the bank so the valuer has no follow-up questions and you get the money as soon as possible.

What the Bank Valuer Actually Needs to See (and Why)

The valuer isn't your enemy. Their job is to protect the bank's money and confirm current build progress. In short: they must verify that the value of your property has increased by the amount you've invested.

To do that, they need three things:

Itemised list of costs spent: Writing "building supplies – 200,000" isn't enough. The valuer needs to see main items broken down (e.g. concrete, rebar, insulation, lost formwork).
Proof that materials are built in (photo documentation): This is the critical part. To the bank, materials stacked on pallets in front of the house have no value—you could sell them tomorrow. You only get money for what is actually built into the structure.
Alignment with schedule and budget: The bank checks that the build is progressing according to the plan it originally approved for your mortgage.

Common Mistakes That Delay Drawdown by Weeks

In practice, drawdowns most often get stuck on avoidable issues. Do any of these sound familiar?

Lost or faded receipts: The classic. A receipt for tools or fixings ends up on the car dashboard. By the time you need to draw down, the thermal paper has faded in the sun and the slip is blank.
Photo chaos on your phone: You have hundreds of build photos, but they're mixed in with pictures of the dog, the kids, and Sunday lunch. Sorting them later is a nightmare.
Relying on memory: "When did we do the damp proofing? And how much was that membrane from the builders' merchant?" Hunting back and guessing after months is exhausting and unreliable.

Guide: How to Build a Bulletproof System (Step by Step)

If you don't want to spend every drawdown weekend at the computer, you need a system that works as you go.

Step 1: Make Photos a Daily Habit

Get into the habit of taking photos. Every time you leave the site, take 3–5 shots. Focus on logical stages—e.g. excavated trenches, trenches with earth cable, trenches after concreting. Capture details of hidden work that won't be visible later.

Step 2: Archive Receipts Immediately

Don't wait until the evening or "when you have time". Rule of thumb: Receipt in hand? Photo it and file it straight away. You can still dump the paper original in a shoebox; you probably won't need it again.

Step 3: Let Modern Tools Handle the Paperwork

It's 2026—why do it by hand? This is where Dovizor comes in. Instead of typing numbers into Excel, just photograph the receipt in the app. Our AI reads the amount, date, and line items and matches them to your build budget. You store site photos in the app too, where they're ordered by date and build stage.

Practical Tip: A Professional Report Saves Weeks of Waiting

Imagine you're the bank valuer. Most people send an email with a messy table and a link to 150 unnamed photos on a file host. It takes days to wade through.

What if you send a clean, generated PDF report instead? First page: a clear table of drawdown vs budget. Next pages: photos of built-in work in date order with captions. At the end: scans of all relevant receipts.

Result? The valuer sees a professional. Minimal work for them, no reason to query anything, and your request gets the green light.

You can generate exactly this kind of report for the bank in Dovizor in two clicks.

Tidy Papers = Peace of Mind

Building your own house is already a big enough challenge. Don't let admin and bureaucracy slow you down. The more you keep costs and photos in order as you go, the smoother your build (and financing) will run.

Tired of spending evenings in Excel?

Make life easier and try Dovizor free during the Beta. Just photograph the receipt at the till and let our AI prepare the documents for the bank. You focus on the build; Dovizor takes care of the paperwork.

→ Try Dovizor for free