Construction Finance
What Security Is Required For Construction Loans?
5 min read- Finance Guide
- Updated 2026
Quick answer
Common primary security
1st 80%
registered mortgage and typical max LVR zone
- Main security Land plus completed improvements
- Extra support Equity or guarantor may help
- Security test Based on acceptable end value
1300 421 044
1300 421 044
Detailed explanation
Security for a construction loan is not just about owning a block of land. The lender wants a property it can mortgage, a value it can rely on, and a structure that still works if costs rise or the project runs late. In practice, that usually means a first mortgage over the land and building works, supported by an acceptable contract, valuation and borrower contribution.
How security is usually structured
Construction loan security often combines these elements
- 01Vacant land or existing site
- 02Registered first mortgage
- 03As if complete valuation
- 04Deposit or usable equity
- 05Possible extra property support
- 06Completed dwelling as final security
Security usually needs to show:
The lender can register mortgage security- The site and build are acceptable assets
- End value supports the requested loan amount
- Any extra security is documented properly
What counts as acceptable security
Typical construction loan security requirements:
-
the main site is usually mortgaged to the lender as primary security
-
existing land equity can strengthen the security position
-
some applications use another property as additional security
-
lenders assess both current land value and completed value
-
guarantees may be required in some structures, especially non standard or company borrowing
Security strength
-
Weaker position
High LVR
-
Typical position
Standard land security
-
Strong position
Extra equity support
How lenders assess security
Lenders review
registered land title and mortgageability- current land value and as if complete valuation
- loan to value ratio against acceptable security
- usable equity in land or another property
- guarantees or company support if required
- builder contract, plans and insurances
- overall marketability of the finished property
Typical security scenarios
-
Owner owns land
Land often used as core security
-
Buying land and building
Land plus future build supports loan
-
Short security position
Extra cash, equity or guarantor may help
-
Completion outcome
Loan remains secured by finished property
Need Help with your Project?
Common problems
Security issues are one of the main reasons construction loans are delayed, restructured or declined. The lender may be comfortable with the borrower, but still reject the deal if the security position is weak or the property is too specialised.
The site does not support the loan amount
If the as if complete valuation comes in below expectation, the lender may not accept the requested loan against that security.
Possible solutions include:
contribute more cash- use available land equity
- offer another property as support
- reduce total borrowing
The property is too specialised
Unusual location, non standard design, rural land or complex improvements can make security less acceptable to mainstream lenders.
Possible solutions include:
- use a lender that accepts niche security
- simplify the project scope
- increase equity contribution
- present stronger valuation evidence
Additional security is not documented properly
Where another property owner or guarantor is involved, delays can happen if the supporting security documents are incomplete or policy requirements are not met.
Possible solutions include:
- confirm ownership and equity early
- prepare guarantor and legal documents upfront
- match the structure to lender policy
- avoid late changes to title or ownership
Steps to get Finance
Step
01
Identify the property that will be offered as primary security
Step
02
Confirm current equity, deposit and any extra property support
Step
03
Order or review the valuation position for the site and completed build
Step
04
Match the security structure to lender LVR and policy limits
Step
05
Complete mortgage, guarantee or supporting security documents
Step
06
Settle the loan and draw funds against the approved security
Speak with a Construction Finance Specialist
Construction loan security can vary depending on whether you already own the land, are buying the site as part of the deal, or need extra equity support from another property.
A specialist can review the proposed security structure and help identify lenders that may be comfortable with it.
Speak with a finance specialist about your construction loan security
Submit the short form below and a finance specialist will review your security position and discuss possible funding options.
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Additional Questions
You may also find these questions helpful
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01what property do lenders take as security for a construction loan
-
02can you use another property as security for a construction loan
-
03does land equity count as security for construction finance
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04do lenders require a guarantor for construction loans
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05how does completed value affect construction loan security
