ADU FinancingSan Diego

ADU Construction Loans in San Diego

A construction loan pays your builder in stages as the ADU goes up, and it can lend against what the property will be worth once the unit is finished. That makes it the usual route for San Diego owners whose equity alone does not cover the build.

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ADU framing going up behind a San Diego house
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How a construction loan pays for an ADU

The lender releases money in draws after each stage of work is inspected, rather than handing over the full amount on day one. Payments are often interest only during the build. When the unit is done, the loan either converts to a regular mortgage in a one time close, or you refinance into one in a two time close.

Expect more paperwork than a HELOC. Lenders want approved plans, a detailed budget, a qualified builder and an as completed appraisal. In San Diego County, that means having your permit path settled with the city or county first.

At a glance

  • Best for: owners whose equity falls short of the budget
  • How money arrives: draws after inspections
  • Lends on: the finished value
  • What lenders check: credit, income, plans, budget and builder

Construction loan pros and cons for an ADU

Pros

  • Can borrow against the finished value
  • Builder is paid only for inspected work
  • Interest only payments are common during the build
  • One time close options avoid a second closing

Cons

  • More paperwork and a slower close
  • Plans, budget and builder must be approved first
  • Fewer lenders offer them for ADUs
  • Overruns can be hard to cover mid build

When another route fits better

If your equity covers the whole budget, a HELOC is usually simpler and faster. A garage conversion may cost little enough to skip a construction loan entirely. Check grant programs for help with the early costs.

San Diego construction loan questions

Is it difficult to get a construction loan?

It takes more preparation than most loans. You need approved plans, a realistic budget, a qualified builder and an appraisal of the finished value, as well as the credit and income the lender requires.

Is it cheaper to get a construction loan or mortgage?

It depends on the lender and your situation. Construction loans carry more risk for the lender during the build, so compare the total cost of each offer, including closing costs, over the time you expect to hold it.

What is the best bank to get a construction loan from?

The best fit is a lender that actually finances ADUs and offers the close type you want. Compare terms from more than one before you choose.

Talk to a lender who finances ADUs

Tell us about your project, budget and timeline and we will connect you with a lender who offers ADU construction loans in San Diego County.

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