Financing Seattle Townhomes, DADU Condominiums and HOA Projects in Washington
Updated October 2026
Two Seattle homes can look nearly identical from the sidewalk yet require different mortgage reviews. One townhome may occupy its own fee-simple lot, while the other belongs to a condominium association. A detached accessory dwelling unit sold separately may also be a condominium, despite sharing no walls.
Identify the legal ownership before choosing financing
The listing description does not establish the property's legal classification. Review the preliminary title report, recorded plat or condominium declaration, and purchase agreement. A zero-lot-line home describes building placement; it does not, by itself, establish whether condominium underwriting applies.
| Property structure | Financing question |
|---|---|
| Fee-simple townhome | Are access, maintenance, and party-wall obligations documented? |
| Attached condominium | Does the project satisfy the selected loan program? |
| Detached DADU condominium | Which project-review rules or exceptions apply? |
| Home with an accessory unit | Is the unit permitted, and can its rent qualify? |
A small association is not automatically exempt from lender review. Likewise, a detached condominium is not automatically ineligible. The recorded structure and selected program determine the next steps.
Review the project, not just the borrower
Association finances and building conditions can affect approval even when the buyer has excellent credit. Obtain the budget, dues schedule, master insurance, meeting minutes, reserve information, and details of pending litigation or special assessments early.
Watch for deferred maintenance, unresolved structural concerns, inadequate insurance, and shared obligations that lack clear agreements. DADU condominiums can present additional questions about utilities, access easements, common land, and responsibility for roofs or exterior repairs.
FHA financing introduces its own condominium eligibility process. Start with HUD FHA Mortgage Limits resources and compare program costs in the Washington FHA versus conventional guide. Buyers pursuing Home Advantage assistance should also review current Washington State Housing Finance Commission (WSHFC) requirements rather than assuming every property or loan combination qualifies.
Budget for ownership and the closing table
Add HOA dues and known assessments to the mortgage payment. A low monthly association charge may simply mean owners handle major repairs directly. Evaluate the master policy alongside any individual unit policy and deductible exposure.
Washington purchases typically close through escrow and title services rather than a universal attorney-closing model. The companies coordinate funds, title coverage, recording, and disbursement; signing does not necessarily mean recording has occurred.
Use the closing cost estimator to plan settlement cash, and ask Sound & Slope to review the ownership documents before your financing contingency expires.
Compare Current Mortgage Rates
Compare current APRs, points, fees, and estimated monthly payments from participating lenders below.
Loan Program Comparison: 2026 Benchmarks
Financing Seattle Townhomes, DADU Condominiums and HOA Projects in Washington — Choose a mortgage by comparing eligibility, upfront cash and total monthly costs, not the advertised rate alone. Conventional, FHA, VA and USDA serve different borrowers. Confirm county limits, taxes, insurance and lender requirements before comparing personalized Loan Estimates for your household.
Historical 2025 one-unit comparison: conforming $806,500; FHA floor $524,225. County and unit-count limits can differ.
| Loan program | Down payment / equity | 2026 one-unit baseline | Costs and page-specific comparison |
|---|---|---|---|
| Conventional | 3%–5% subject to eligibility | $832,750 | PMI generally below 20% down |
| FHA | 3.5% at 580+; 10% at 500–579 | $541,287 floor | 1.75% upfront MIP; 0.55% annual for >95% LTV, base loan ≤$726,200, term >15 years |
| VA | 0% for eligible borrowers | No VA limit with full entitlement | No monthly PMI; funding fee unless exempt |
| USDA | 0% for eligible borrowers | Income, address and repayment eligibility | Guarantee and annual fees; confirm current schedule |
| Jumbo | Lender-specific cash and reserves | Above applicable conforming limit | Lender-specific pricing and insurance |
| Home Equity / Refinance | Equity and underwriting dependent | Property and lender dependent | Compare closing costs, term and break-even |
Sources: FHFA limits; HUD FHA limits.
Editorial Methodology & Primary Sources
Verification date: Not recorded; check the primary source and lender timestamp before relying on an estimate.
Rate comparisons use participating lender feeds, not a whole-market survey or guaranteed offers. Freddie Mac PMMS is a market benchmark, not a personalized quote. Calculator models rely on published regulatory formulas and disclosed assumptions rather than fabricated first-person loan testing.
Monthly principal and interest use the amortization formula P × r / (1 − (1 + r)−n), where r is the monthly note rate and n is the number of payments; at zero interest use P / n. PITI adds monthly property taxes and homeowners insurance; PMI is separate. APR includes applicable finance charges under Regulation Z and is not the note rate used for payments. Compare lender Loan Estimates for actual APR and fees.
- Consumer Financial Protection Bureau (CFPB) — Loan Estimates, APR and borrower disclosures; Regulation Z.
- U.S. Department of Housing and Urban Development (HUD / FHA) — FHA program guidance.
- U.S. Department of Veterans Affairs (VA) — VA loan eligibility and benefits.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — published rate benchmarks.
- U.S. Census state tax collections — state property tax benchmarks; confirm parcel-specific assessments and exemptions with the state revenue department and local assessor.
The payment snapshot uses illustrative annual taxes of 1% of home price, $1,200 insurance and 0.5% PMI below 20% down, not verified local quotes. Other calculators disclose their inputs and assumptions. Published guidance and lender feeds may change independently; confirm current program rules, taxes and offers before a decision.