What happens if development costs increase after finance is approved?

If development costs increase after approval, the lender will usually reassess the project. In many cases the borrower must cover the shortfall through cash or equity unless the lender agrees to vary the facility or a refinance is arranged.

Will a lender automatically increase a development loan if costs rise?

No. A lender does not usually increase a development facility automatically. It will normally review the revised budget, contingency, cost to complete, end value, and exit strategy before deciding whether any change can be approved.

Can you refinance a development project because of cost overruns?

Yes, some projects can be refinanced if cost overruns occur, especially where the revised feasibility still works and there is sufficient equity, value, and a clear path to completion.

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Development Finance

What Happens If Development Costs Increase?

Quick answer

Cost overruns are usually covered by

1x borrower first 0 automatic lender increase

In most cases, the developer must solve the shortfall unless the lender agrees to amend the facility

Typical contingency allowance 5 to 10%+
Common funding response Extra equity
Key independent review QS cost to complete

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If development costs rise after a loan is approved, the lender does not automatically increase the facility. In many cases, the borrower is expected to cover the shortfall first through cash, extra equity, or another approved source of capital.

Before further funding is released, the lender will usually reassess the revised budget, contingency, cost to complete, expected end value, and whether the project still has a credible exit.

What usually causes development cost overruns?

Cost overruns can occur on small and large developments. They are not limited to apartment towers. Townhouses, land subdivisions, mixed use sites, and commercial builds can all run over budget if assumptions prove too optimistic.

Lenders usually look closely at the cause of the overrun because there is a big difference between a manageable variation and a project that was under costed from the beginning.

Common causes include:

Builder price increases or labour and material escalation
Latent site conditions such as rock, drainage, or service upgrades
Design changes and authority required variations
Project delays increasing interest, preliminaries, and holding costs
Original contingency allowance proving too small
Consultant, civil, compliance, or selling costs rising above budget

What lenders do when costs increase

A lender will usually pause and reassess rather than simply keep funding under the original assumptions.

That review focuses on the revised budget, remaining contingency, updated timing, and whether the project still has a workable debt and exit position.

A typical review sequence may include:

01 Cost increase is identified
→
02 QS updates cost to complete
→
03 Lender reviews revised feasibility
→
04 Borrower injects extra capital if required
→
05 Facility is amended or refinanced
→
06 Funding resumes to completion

If the project no longer meets the lender's risk criteria, further drawdowns may be restricted until the funding gap is resolved.

Who usually pays for the overrun?

When development costs increase, extra funding usually comes from one of these channels:

Source 01

Developer equity

Most lenders first expect the borrower or guarantor group to inject more cash or accessible equity if the approved facility is no longer enough.

Source 02

Facility variation or refinance

If the revised feasibility still works, a lender may consider a facility increase, restructure, or refinance to another funder with a broader risk appetite.

Common contingency range 5 to 10%+

Contingency is built into the original budget where possible
Once contingency is exhausted, extra equity is often needed

Well prepared development feasibilities normally include contingency, but contingency is not unlimited. If the actual cost to complete rises beyond the approved budget, the lender will review the remaining buffer and may require the borrower to bridge the gap before more funds are released.

What gets reassessed after a cost overrun?

Once a project goes over budget, the original feasibility is no longer enough on its own.

The lender, quantity surveyor, and sometimes the valuer may revisit the numbers to decide whether the project still works.

That reassessment commonly includes:

Updated builder contract or revised trade budget
QS report on remaining cost to complete
Revised total development cost and contingency balance
Updated holding, interest, and delay costs
Fresh sales evidence or valuation if the market changed
Revised LVR, LTDC, and end debt position
Status of pre sales, leasing, or refinance exit
Developer capacity to inject more funds

5 - 10 %

Many development budgets include contingency of around 5 percent to 10 percent or more depending on the type and stage of the project. If the overrun is bigger than the contingency, extra capital is often required.

How cost overruns can affect the loan

An overrun does not always kill a project, but it can change the funding structure very quickly.

More equity may be needed

If the approved facility cap is reached, the developer may need to inject more funds before the next drawdown will be released.

Timing can blow out

Re quoting, QS review, new approvals, or lender credit reassessment can delay the project and increase interest and holding costs further.

Refinance may be required

If the current lender will not vary the loan, a specialist construction or private lender may be approached to refinance the revised position.

Common problems

When costs increase, problems tend to stack together. The issue is often not just the builder invoice. It is the knock on effect across debt, timing, and profit.

Contingency runs out

Once the contingency allowance is fully used, the borrower has little room left inside the approved budget.

Possible solutions include:

Injecting cash from outside the project
Using equity in another property
Bringing in an equity partner

Project profit shrinks

Even if the build can still finish, overruns can reduce profit enough to make the lender uncomfortable with the revised risk.

Responses may include:

Repricing the end values where justified by evidence
Cutting non essential scope or finishes
Refinancing to a lender with different parameters

Completion is delayed

Time overruns usually create their own cost overruns through extra interest, preliminaries, consultant fees, and holding costs.

Borrowers often need:

An extended loan term
A revised QS cash flow forecast
More working capital for carry costs

Existing lender says no

Some lenders will not top up a construction facility even if the project is still fundamentally sound.

Alternative paths may include:

Mid project refinance
Mezzanine or private capital
Additional security support

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Steps To Manage A Development Cost Overrun

Step

01

Identify the overrun early and confirm whether it is one off or systemic

Step

02

Get an updated builder budget and QS cost to complete report

Step

03

Rework the feasibility including extra interest, contingency, and exit values

Step

04

Show the lender how the shortfall will be covered and when funds are available

Step

05

Request a facility variation or test refinance options with specialist lenders

Step

06

Secure the revised funding plan and keep construction moving to completion

Disclaimer: Property Funding Help is a lead generation service and not a lender, broker, or financial advisor. We do not provide loans or credit decisions. We connect users with third-party finance professionals who may assist with their enquiry. All information on this website is general in nature and does not take into account your personal objectives, financial situation, or needs. Before making any financial decisions, you should consider seeking independent professional advice. By submitting your details, you consent to being contacted by third-party providers.

Development Finance

What Happens If Development Costs Increase?

Quick answer

Cost overruns are usually covered by

1x borrower first 0 automatic lender increase

What usually causes development cost overruns?

What lenders do when costs increase

Who usually pays for the overrun?

Source 01

Developer equity

Source 02

Facility variation or refinance

Need Help with your Project?

What gets reassessed after a cost overrun?

How cost overruns can affect the loan

More equity may be needed

Timing can blow out

Refinance may be required

Common problems

Contingency runs out

Possible solutions include:

Project profit shrinks

Responses may include:

Completion is delayed

Borrowers often need:

Existing lender says no

Alternative paths may include:

Steps To Manage A Development Cost Overrun

Step

01

Step

02

Step

03

Step

04

Step

05

Step

06

Additional Questions

01How do you get finance for a property development?

02How much deposit is required for development finance?

03How long does development finance take to arrange?

04Can first time developers get development finance?

05Can you refinance a development loan?

Helpful Property Finance Guide

Guide to construction finance

Understanding development finance

Commercial property lending explained

How property refinancing works

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