RCN Capital Blog

What to Look For When Underwriting Construction Loans: A Broker’s Checklist

Written by RCN Capital | 2:00 PM on October 29, 2026

A construction project can attractive on paper until an incomplete budget, an inexperienced builder, or a weak exit strategy causes problems with deal. Recognizing these risks early can help mortgage brokers build stronger loan submissions and prevent needless delays when securing financing.

U.S. construction spending was down 1.7% year over year in August, and housing completions were down as well. In other words, careful deal evaluation has become even more important. These deals can still be very lucrative though, and the brokers who can put together clean, complete files will have an edge on the competition when it comes to closing these deals.

Why Construction Loan Underwriting Differs From a Standard Mortgage

With a traditional mortgage, the finished home secures the loan. With new construction, however, the lender is financing something that does not exist yet. That shifts underwriting’s focus toward four questions:

  • Can the project be completed within the stated budget and timeline?
  • Is the builder qualified and insured?
  • What will the finished property be appraised for?
  • How will the loan be repaid, through sale, refinance, or a transitional structure?

Construction Loan Borrower Requirements to Verify First

Start with the borrower before you spend time on the project documents.

Equity and Liquidity

Construction loans generally require a 20% to 25% down payment. Document the source of funds with bank statements, and confirm reserves beyond the down payment.

Experience and Capacity

Ask for a track record of completed projects, including addresses, property values, and timelines. Experience with similar scope and scale carries real weight in an application.

Credit and Debt Profile

Lenders will look closely at credit history, because they don’t have a property to act as collateral on the loan. Get clients to pull their reports early, correct any errors, and reduce debt if possible. A DTI of 50% or less is typically ideal, although stronger borrower profiles may be an exception.

Construction Loan Qualification Requirements: The Project Itself

Underwriters give heavy weight to project economics. Confirm each of these before submission:

  • Land ownership or a signed purchase agreement, plus any existing liens
  • Approved plans and specifications, with permits in hand or a clear path to them
  • Zoning compliance and any environmental or utility approvals the site requires
  • A construction timeline with milestones

Construction Loan Documentation Requirements at a Glance

Use this table as a starting point for building a comprehensive loan submission.

Category

What to Collect

Why Underwriters Care

Borrower finances

Credit authorization, bank and asset statements, tax returns, personal financial statement, DTI calculation

Confirms ability to carry and complete the project

Entity and ownership

Corporate documents, ownership structure, guarantor information

Clarifies who is liable and who controls the project

Land

Deed or purchase agreement, existing loan balance, survey, title work

Establishes collateral and borrower equity

Plans and specifications

Architectural drawings, material list, engineer or architect compliance letters

Supports cost accuracy and appraisal

Budget

Line-item hard and soft costs, contingency, interest reserve

Shows funding is sufficient and realistic

Builder

Signed contract, license, liability and builder’s risk insurance, references, past projects

Verifies capability and coverage

Valuation

Subject-to-completion appraisal, as-is and as-completed values

Sets the loan amount against value and cost

Permits and approvals

Building permits, zoning, utility, environmental reports

Proves the project can legally proceed

Schedule and draws

Construction timeline, a draw schedule tied to inspections

Aligns funding with progress

Exit

Sale plan, refinance plan, or a construction-to-permanent transition

Shows how the loan gets repaid

Construction Loan Application Checklist for Brokers

Here’s a quick checklist for brokers to run through before submitting a loan application.

Stage

Broker Action

Red Flag to Catch

Pre-qualification

Confirm experience, liquidity, site, plans, and rough budget

Thin reserves or no completed projects

Term sheet

Choose construction-only or construction-to-permanent, review draw terms and fees

Exit strategy that does not match loan type

Third-party review

Order appraisal, budget review, contractor vetting

Appraisal relying on sum of retail sales instead of value to one purchaser

Closing

Confirm title, insurance, permits, and signed loan agreement

Missing permits or lapsed insurance

Funding and draws

Verify inspections before each draw, track budget against progress

Draw requests ahead of verified work

Payoff or conversion

Confirm takeout commitment or sale timeline

Maturity landing before permanent financing is ready


Partner With RCN Capital for Construction Financing

RCN Capital provides ground-up construction programs with in-house underwriting, draw-based funding, and broker protections, including a white-labeled loan management portal and resources that can help you grow your lending business. 

Ready to submit your next construction deal? Visit our loan programs page to see how it fits into our guidelines, and submit your application as soon as you’re ready.