Off Plan Purchase Documents: Cross-Check Financing, ID, Funds

Off plan purchase documents are the buyer's ID, the reservation or sale contract, the financing evidence and the proof of where the deposit came from. They only mean something when each one is compared with the others: the name on the ID must be the name on the contract, the loan amount must fit the price of the lot, and the account that pays the deposit must belong to the buyer. This article walks through those comparisons field by field, and says what a developer's reviewer does when one fails.

This article is for informational purposes only and does not constitute legal, financial, or regulatory advice. Regulatory references are accurate as of 1 November 2026. Consult a qualified professional for guidance specific to your situation.

Why an off-plan file needs more than a document checklist

An off-plan file stays open for months or years, so a document that was valid at reservation can be expired, superseded or contradicted by completion. The buyer pays in stages, financing offers lapse, and in some markets the contract can be assigned to someone else before the building exists. A checklist ("ID, payslips, bank statement") confirms that papers are present. A cross-check confirms that they describe the same person, the same lot and the same money.

In the UK, HMRC is the anti-money-laundering supervisor of estate agency businesses and requires registration before they trade as such (GOV.UK, Money Laundering Regulations: who needs to register). That page does not mention developers or off-plan sales, so a developer that sells through its own team should ask HMRC whether its activity is in scope. Where it sells through an agent, the agent carries the customer due diligence duties under the Money Laundering Regulations 2017.

The cross-check map

The table below is the spine of the review. Each row names the field on one document, the field it is compared with, what a mismatch looks like and the next action.

Identity against the contract

Identity is checked by comparing the ID's name, date of birth and expiry with the name written in the reservation agreement, then with every later document. The usual mismatches are mundane: a missing middle name, a surname spelled differently on the lender's letter, or a date of birth written day-first on one document and month-first on another.

Treat each as a question for the buyer, not as a finding. A reviewer notes the difference, asks for a document that explains it, and records the answer in the file. The check that matters most in off-plan is the expiry date. A passport valid on the reservation date but expiring before completion means a second identity check months later, and it is cheaper to diarise that on day one.

Financing against the price and the lot

The mortgage offer should be compared with the contract on four fields: borrower name, amount, property reference and validity date. Off-plan makes this harder because the lender often values a property that does not yet exist, so the offer may carry a plot number or only a development name.

Add the arithmetic. Loan amount plus deposit plus any declared equity should equal the price, including extras agreed with the developer. If the sum falls short, the file has a funding gap that someone has to explain. The buyer may be selling another property, borrowing from family, or relying on an expectation that the loan will rise. Each of these has its own evidence, so ask which one applies rather than accepting "it will be fine".

An offer is also a time-limited document. Compare its expiry with the contract's long-stop date. If the building is delayed, a buyer holding a lapsed offer is a buyer who may not be able to complete, and the developer wants to know that before the unit is withdrawn from sale to others.

Source of funds against the bank statement

Source-of-funds review compares what the buyer says the money is with what the account history shows. The deposit comes from savings, a property sale, a gift, an inheritance or a loan, and each has a document that proves the story. Our guide to source of funds and wealth verification covers the evidence types in depth.

Three comparisons do most of the work:

1. Account holder against buyer. The name on the statement must be the buyer's, or the file must explain why it is not.
2. Credit against explanation. A large deposit into the account should match a sale completion statement, an inheritance grant or a gift letter in amount and date.
3. Transfer to the developer against the account. The payer on the developer's bank ledger should be the account shown on the statement.

Under regulation 28 of the Money Laundering Regulations 2017, a firm in scope must scrutinise transactions through the relationship, including the source of funds, to be satisfied they are consistent with its knowledge of the customer (legislation.gov.uk). For a developer outside the regulations, the same comparison is still good practice, because a deposit that must be refunded or frozen later is a commercial problem as well as a compliance one.

When the buyer is a company

A company buyer is checked by comparing the registry extract with the signatory's ID and the ownership declaration. In the UK, Companies House shows the registered name, number, officers and persons with significant control. Compare the company name on the extract with the contract down to the "Ltd" suffix, confirm the signatory is a listed officer or holds a written authority, and compare the persons with significant control with the ownership chart the buyer supplies.

A register lookup proves that the entity exists and who it reports as its officers. It does not prove that the declared owners are the true ones, or that any document the buyer sends is authentic. Where the chain runs offshore or through a trust, ask for the chain documents and escalate instead of relying on the extract.

Re-checks at each stage payment and assignment

Staged payments and contract assignments are the points where a clean file goes wrong. Re-run three comparisons whenever money is received or a name changes:

• The payer of each instalment against the contract party.
• The ID expiry against the next completion milestone.
• Any request to put the contract in another name, which needs a full check on the new buyer before the developer agrees.

An assignment request is the strongest signal in an off-plan file. A new name appears with no history in the file, often shortly before completion. Apply the same identity, financing and source-of-funds comparisons to the incoming party as to the original buyer.

What buyers ask, and what the answer is

Buyers on property forums ask a handful of questions again and again, and developers can answer them in the reservation pack.

"Why does the developer want my bank statements, I already have a mortgage." The lender checks the loan. The developer, or its agent, is checking that the deposit and any top-up come from a source it can explain. The two checks overlap but are not substitutes.

"My partner is paying part of the deposit. Is that a problem?" It is not a problem if declared. The reviewer needs the payer's ID, a short statement of the relationship and the fact that the money is a gift and not a loan, with the matching bank statement.

"The name on my passport does not match my contract." Tell the developer before exchange. A corrected contract is a ten-minute fix. A mismatch discovered at completion can block the transfer.

A decision rule for the reviewer

Decide each mismatch into one of three outcomes and record the reason:

• Resolved: the buyer supplied a document that explains the difference. Attach it to the file.
• Open: an explanation is pending. No further instalment is accepted until it arrives.
• Escalated: the explanation does not hold, the payer is unexplained or the figures do not reconcile. Refer to the money laundering reporting officer if you have one, and take legal advice on whether a report to the National Crime Agency is needed.

Keep the comparison itself separate from the judgment. A tool can line up the fields and flag the differences, but a person decides what they mean.

How CheckFile fits in

CheckFile compares fields across the documents in a buyer file: names, dates of birth, addresses, amounts and expiry dates, and checks dates and formats against what each document type should contain. It does not prove that a document is authentic or that a buyer is who they claim to be. For the sector view, see the real estate solution, the security page and pricing. The wider picture for this sector is in the industry verification guide, and the pre-offer version of this workflow for agents is in buyer document verification before an offer.

Frequently Asked Questions

What documents does a developer need from an off-plan buyer?

At a minimum: photo ID, proof of address, the signed reservation or sale contract, financing evidence (mortgage offer or proof of cash), and evidence of where the deposit comes from. What matters is that these are compared with each other, not merely collected.

What is the most common mismatch in an off-plan file?

Name differences between the ID, the contract and the lender's letter, followed by a funding gap between the loan, the deposit and the price. Both are usually innocent and are resolved by one extra document.

Can a developer accept a deposit from a third party?

Yes, if the payer is identified, the relationship is documented and the gift or loan status is clear. An unexplained third-party payer should stop the file until the reviewer understands it.

Does a register lookup prove a company buyer is genuine?

No. It confirms that the company exists and who is listed as officer or owner. It does not prove the documents supplied are authentic or that the stated owners are the real controllers.

How often should the file be re-checked?

At each stage payment, at any change of name or payer, when an ID or financing offer is about to expire, and before completion.