The quick read: A DSCR loan on an Olympia rental is sized on the property's rent, not your income: the lender divides monthly rent by the full monthly payment, taxes and insurance included. The Olympia-specific variable is the building's certificate of occupancy date. Washington's rent cap, RCW 59.18.700, bars any increase in a tenancy's first 12 months and limits later increases to 7% plus the Seattle-area consumer price index or 10%, whichever is less. RCW 59.18.710 exempts a unit whose first certificate of occupancy was issued 12 or fewer years before the notice. So a 2015 fourplex and a 2024 fourplex with identical rent rolls can follow different rent paths during the same loan term.
How does a DSCR loan work on an Olympia rental property?
A DSCR loan on an Olympia rental property qualifies the building rather than the investor's paycheck: the lender divides monthly rent by the full monthly payment, counting principal, interest, taxes, insurance and dues, and the loan proceeds when that ratio clears the lender's own minimum, alongside its credit, leverage and reserve rules.
NerdWallet's DSCR guide (updated Jul 17, 2026) writes the debt service coverage ratio as monthly rental income divided by the loan payment, and lists typical requirements of a ratio around 1.25 or higher, a credit score of at least 620, at least 20% down and three to six months of payments in reserve. Those are one guide's typical figures, and a lender's own rate sheet sets the actual terms.
The loan is business-purpose credit. The CFPB's official commentary to Regulation Z deems credit to acquire or improve non-owner-occupied rental property, regardless of the number of units, to be for business purposes, and says a property the owner expects to occupy for more than 14 days in the coming year cannot be considered non-owner-occupied.
Typical minimum DSCR (NerdWallet, updated Jul 17, 2026): around 1.25 or higher Typical minimum credit score (NerdWallet, updated Jul 17, 2026): at least 620 Typical down payment (NerdWallet, updated Jul 17, 2026): at least 20%
What does Washington's rent cap allow on an Olympia rental?
Washington's rent cap allows an Olympia landlord no rent increase during the first 12 months of a tenancy and, after that, no more than 7% plus the consumer price index or 10%, whichever is less, in any 12-month period, unless the unit's first certificate of occupancy is 12 or fewer years old.
RCW 59.18.700 defines that index as the June 12-month change in the consumer price index for all urban consumers in the Seattle area, and directs the Department of Commerce to publish the next year's maximum each year. The section also says nothing in the cap stops a landlord from adjusting rent by any amount after a tenant vacates and the tenancy ends. A landlord claiming an exemption must put the supporting facts in the written notice.
The investor exemptions are narrow. RCW 59.18.710 exempts an owner-occupied single-family residence and an owner-occupied duplex, triplex or fourplex, but those owner-occupancy exemptions do not apply when the owner is a real estate investment trust, a corporation, or a limited liability company with at least one corporate member. A rented house bought for a DSCR loan, which cannot be owner-occupied, will rarely fit them.
Table: How Washington's cap treats three Olympia fourplexes (RCW 59.18.700 and 59.18.710)
| Attribute | Certificate of occupancy 2024 | Certificate of occupancy 2015 | Certificate of occupancy 2005 |
|---|---|---|---|
| Attribute Covered by the cap for a notice served in October 2026 | Certificate of occupancy 2024 No, 12 or fewer years old | Certificate of occupancy 2015 No, 12 or fewer years old | Certificate of occupancy 2005 Yes |
| Attribute First year when the cap can apply | Certificate of occupancy 2024 2036 | Certificate of occupancy 2015 2027 | Certificate of occupancy 2005 Already applies |
| Attribute Renewal increase on a sitting tenant | Certificate of occupancy 2024 Not limited by RCW 59.18.700 | Certificate of occupancy 2015 Not limited until the exemption ends | Certificate of occupancy 2005 Lesser of 7% plus CPI or 10% |
| Attribute Increase in the first 12 months of a tenancy | Certificate of occupancy 2024 Not limited by RCW 59.18.700 | Certificate of occupancy 2015 Not limited until the exemption ends | Certificate of occupancy 2005 None allowed |
| Attribute Rent after a tenant vacates | Certificate of occupancy 2024 Any amount | Certificate of occupancy 2015 Any amount | Certificate of occupancy 2005 Any amount |
The year a building enters the cap is our reading of the 12-year test against the notice date; confirm the exact date from the certificate itself.
Why does the certificate of occupancy date change an Olympia DSCR?
The certificate of occupancy date changes an Olympia DSCR because it decides whether below-market leases can be reset at renewal or only at turnover, and a typical multi-year loan term can carry a building from exempt to capped partway through, which changes how quickly coverage can improve after closing.
Illustrative example (our arithmetic, not a quote): two West Olympia fourplexes, each with four leases at $1,350 a month against a market rent we assume at $1,550. We assume 7.0% interest over 30 years, $560 a month of property tax and $190 of insurance, and a lender that sizes at 1.25 on in-place rent.
- In-place rent of $5,400 supports a loan of about $536,600.
- If the 2005 building's tenants renew at the 10% ceiling, rent reaches $5,940 and supports about $601,500, assuming the published figure is 10% that year.
- The 2024 building can renew at market, $6,200, which supports about $632,800.
At closing, both lenders see the same rent roll. The difference is what a refinance in two years can be sized on. Run your own case in the DSCR calculator.
What does Olympia's housing data say about the rental stock?
Olympia's housing data show newer apartments concentrated in Lacey and Tumwater, with the City of Olympia permitting few: the Census Bureau's 2025 annual file records 38 buildings of five or more units holding 908 units across the Olympia-Lacey-Tumwater metro, about 23.9 units per building by our arithmetic.
The place-level file shows Lacey with 16 such buildings holding 602 units, Tumwater with 12 holding 146, and the City of Olympia with 2 holding 58. Tumwater's row is a Census estimate, since the file shows no months reported for it. These are permit authorizations, not completions, and every unit permitted now will sit outside the cap for its first 12 years.
The smaller stock is where Olympia's code changed. Ordinance 7267, passed December 15, 2020, amended the city's unified development code to provide for accessory dwelling units, duplexes, triplexes, fourplexes, sixplexes and courtyard apartments in the city's low-density neighborhoods, which is what makes a duplex or triplex conversion in older areas such as South Capitol or Bigelow a zoning question rather than a variance. HUD's FY2026 Fair Market Rent for a two-bedroom unit in the metro is $1,960, against $1,843 in FY2025, about 6.3% higher by our arithmetic. The Thurston County Assessor values property to market conditions as of January 1 and reports that single-family sale prices rose to $516,000 between January 1, 2024 and January 1, 2025.
5+ unit buildings permitted, Olympia-Lacey-Tumwater metro, 2025 (Census BPS): 38 Units in those buildings (Census BPS, 2025): 908 HUD FY2026 two-bedroom Fair Market Rent, Olympia-Lacey-Tumwater: $1,960
How do you get lenders competing for an Olympia DSCR loan?
Lenders compete on an Olympia DSCR loan when each one sees the same complete package, including signed leases with start dates, the first certificate of occupancy for every unit, the current year's assessed value and a written insurance quote, so their offers differ on rate and structure rather than on assumptions about the rent cap.
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For an Olympia, Lacey or Tumwater rental, the package that gets clean quotes carries:
- Signed leases with tenancy start dates and the date of each tenant's last increase
- The first certificate of occupancy for each unit, including any ADU
- The Thurston County assessed value and current tax statement
- A written insurance quote
- Purchase contract, appraisal if available, and any repair scope
- Target loan amount, hold period and the prepayment penalty you can accept
When it is ready, send the Olympia deal for review. It costs Zero upfront to submit a deal and review offers; YieldStack's broker fee is 0.50–1.00% of the loan amount and is paid only at closing. Local context is on the Olympia market hub and the Washington market hub; if a house needs work first, see how to compare hard money lenders in Olympia.
The bottom line
An Olympia DSCR loan qualifies on rent over the full payment. Washington bars increases in a tenancy's first 12 months and caps later ones at 7% plus CPI or 10%, unless the certificate of occupancy is 12 or fewer years old. Put that date in the underwriting file next to the rent roll.