QS Report (Quantity Surveyor / Monitoring Surveyor)
A QS report is the assessment prepared by a Quantity Surveyor (often called the monitoring surveyor or Independent Monitoring Surveyor, IMS) whom the lender appoints to check the costs, progress and value of a development before releasing each stage of the loan. On a development finance facility, money is not handed over in one lump: it is drawn down in stages, and the QS report is the document that tells the lender each stage is genuinely complete and worth what is being claimed.
Why It Matters
The QS report is what keeps your drawdowns flowing. Development finance lenders release funds against certified progress, not against your say-so, so a clean, on-time report means the next tranche is paid without friction, while a report that flags a cost overrun or a slipping programme can delay or reduce a drawdown. For the lender it is the main control that protects their money mid-build; for the developer it is the checkpoint that has to be passed at every stage, which is why an accurate cost plan and an experienced contractor matter so much.
How It Works in Practice
- Initial appraisal report. Before the facility completes, the QS reviews the build cost schedule, the programme, the contractor and the appraisal, and confirms to the lender that the numbers stack up. This sets the baseline every later report is measured against.
- Interim (progress) reports. Through the build, usually monthly, the QS inspects the site and certifies the works completed since the last visit, the value of those works, and the estimated cost to complete. Each interim report unlocks the corresponding drawdown.
- What each report checks: actual costs against the agreed schedule, progress against programme, the value of works completed, and whether the money left in the facility is still enough to finish the scheme.
The QS is instructed from the lender's approved panel, so you do not choose them, and the cost of monitoring is paid by you, the developer (see the monitoring fee in the typical cost stack).
Example
A developer requests a £150,000 drawdown for a completed floor of works. The monitoring surveyor visits, verifies the works are in place and correctly valued, confirms the remaining budget still covers the cost to complete, and certifies the claim. The lender releases the £150,000. If the QS had found the works only 70% complete, the release would be scaled back to match the certified value.
Related Terms
- GDV (Gross Development Value): the completed value the loan is sized against
- LTC vs LTV vs GDV vs LTGDV: the ratios that cap how much you can borrow
- How Development Finance Works: the full drawdown process the QS sits inside
Get Development Finance
Managing QS liaison and drawdown requests is part of what a specialist broker does. If you are planning a development and want the funding structured so drawdowns run smoothly, talk to our team. We work with over 300 development finance lenders across the whole market.