InterWest Mortgage
Mortgage preapproval is an early lender review that may help a buyer understand a possible financing range. It is not final approval, guaranteed financing, or confirmation that a specific property will qualify.
Last reviewed: September 30, 2026
A lender may review credit, income, assets, debts, and other information before issuing a conditional letter. The depth of review and terminology can vary by lender.
Ask what was verified, which assumptions were used, and what conditions remain.
Prequalification may rely more heavily on information a borrower reports, while preapproval may involve verification and a more detailed review. The CFPB notes that lenders do not always use the terms consistently.
The practical distinction is what the lender reviewed—not the label alone.
Final approval comes later, after complete underwriting and review of the specific property, title, appraisal or valuation, insurance, documentation, and other applicable conditions.
A preapproval can change or expire if information, market conditions, the property, or program requirements change.
A lender may request identity, employment, income, asset, debt, credit, residence, and purchase information through a secure process. The exact request depends on the transaction.
Do not send Social Security numbers, bank records, or financial documents through this informational page.
A letter can help frame a search and may accompany an offer when appropriate, but it is not a promise that the lender will approve the final loan or property.
Coordinate changes in price, property type, occupancy, funds, or timing with the lender.
A consultation can clarify the mortgage process and required documents without you needing to share sensitive information. When you’re ready, you can begin the downloadable mortgage application.
Compare carefully
Terms vary by lender, so ask what was actually reviewed.
| Question | Prequalification | Preapproval | Final approval |
|---|---|---|---|
| Typical purpose | Early estimate | More detailed early review | Decision on the completed loan file |
| Information | May be self-reported | This may include verifying documents and checking your credit history. | Next is a complete review of your application file and the property itself. |
| Guarantee | Not guaranteed | Not guaranteed | Still subject to stated closing conditions |
This is general education. InterWest can explain how its current process uses each term.
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Official references
Program information can change. These official resources support the specific contexts described below; confirm current rules before relying on them.
Explains key mortgage terms and the difference between official loan documents and initial estimates.
Common questions
No. Final approval requires complete underwriting and review of the specific property and remaining conditions.
No. Property type, value, condition, title, insurance, occupancy, and program rules may still matter.
Ask what information was verified, which assumptions were used, how changes may affect it, and what remains before final approval.
A useful next step
We recommend booking a consultation first. When you feel ready to move forward, you can begin the downloadable mortgage application.
