There is no single "best" neighborhood for every investor in Bellevue. Cash flow, appreciation potential, rental stability and capital preservation each point to a different submarket — a Downtown Bellevue condo, Crossroads rental, or West Bellevue estate can all be "correct" depending on what an investor is optimizing for. This guide sets out the actual formulas for calculating ROI, a shared set of illustrative assumptions you can swap for your own numbers, and two fully worked examples so you can reproduce the math on any property you're considering.
Key takeaways
- ROI in real estate is not one number — gross yield, cap rate, and cash-on-cash return each answer a different question, and this article shows how to calculate all three.
- Principal paydown is not cash flow and is excluded from the cash-on-cash calculation; appreciation is modeled as a separate, non-guaranteed scenario.
- Every dollar figure below is either a verified NWMLS closed-sales metric (clearly sourced) or an explicitly labeled illustrative assumption — no neighborhood median prices or rents are invented.
- Submarkets such as Downtown Bellevue, Crossroads, Newport/Newport Hills, Somerset, West Bellevue and Bridle Trails differ in entry cost, tenant demand, and risk profile, not just in headline price.
- Before underwriting a specific address, pull a fresh NWMLS export filtered by neighborhood and property type, plus rent comps from comparable leased units, with sample size stated.
Bellevue market context (verified, citywide)
Before drilling into submarkets, it helps to anchor to the only verified numbers available at publication: per NWMLS closed sales via the Willfen feed, all residential property types, for the period ending 1 August 2026, Bellevue's citywide closed median price was $1.62M, with a median of 12 days on market, +6.1% year-over-year, and a 102.4% sale-to-list ratio. For comparison, over the same period Seattle posted $965K / 17 DOM / +3.4% / 100.8%; Redmond $1.38M / 11 DOM / +5.2% / 102.9%; Kirkland $1.45M / 13 DOM / +4.7% / 101.6%; Sammamish $1.72M / 14 DOM / +5.8% / 101.1%; and Mercer Island $2.55M / 21 DOM / +2.9% / 99.2%.
These are all-residential figures (not single-family-only, not neighborhood-level, not luxury-tier), and they describe the sale side of the market, not rental performance. They are useful for understanding relative competitiveness and pricing momentum across the Eastside, but they cannot be broken down to the Bellevue submarket level without a fresh, purpose-built NWMLS export. See our 2026 Bellevue market overview and is Bellevue real estate a good investment for more citywide context.
How we calculate ROI
"ROI" gets used loosely in real estate conversations, so this article separates it into four distinct, reproducible calculations. Use the same formulas on your own numbers for any property:
- Gross rental yield = annual rent ÷ purchase price. A quick, rough screen that ignores expenses.
- NOI (net operating income) = rent − property tax − insurance − HOA − management − vacancy allowance − maintenance reserve. NOI excludes debt service.
- Cap rate = NOI ÷ purchase price. Useful for comparing properties as if purchased in cash.
- Cash-on-cash return = pre-tax annual cash flow (NOI − annual debt service) ÷ total cash invested (down payment + closing costs).
Two things this article deliberately does not do: principal paydown on the mortgage is not counted as cash flow (it is a balance-sheet transfer, not cash in pocket), and appreciation is never baked into the base ROI. Appreciation is shown only as a separate, clearly labeled scenario range (conservative / base / optimistic), never stated as a guaranteed outcome.
Shared assumptions (illustrative — replace with your own inputs)
Every worked example below uses the same illustrative starting assumptions. None of these are Bellevue-specific facts; they are placeholders you should swap for your actual loan quote, insurance quote, and HOA statement:
- Down payment: 25% (illustrative — investment properties commonly require 20-25%+)
- Mortgage rate: 6.75% (illustrative — get a current quote from your lender)
- Loan term: 30 years, fixed (illustrative)
- Closing costs: 2% of purchase price (illustrative)
- Vacancy allowance: 5% of gross rent (illustrative)
- Maintenance reserve: 8% of gross rent (illustrative)
- Property management: 8% of gross rent (illustrative — skip if self-managing)
- Insurance: $1,200/year for the condo example, $2,200/year for the detached-home example (illustrative)
- HOA: $650/month for the condo example, $0 for the detached-home example (illustrative — HOA varies enormously by building and community)
Submarket comparison: what differs beyond price
The table below compares entry-cost character, rental demand drivers, cost drivers and risk across six Bellevue-area submarkets. It intentionally does not include median price, typical rent, gross yield or cap rate for each submarket, because those figures do not currently exist in verified form for this article — they must come from a fresh NWMLS export filtered by neighborhood and property type (with sample size stated) plus rent comps from comparable leased units in that specific submarket. Publishing invented neighborhood-level numbers would be misleading; pulling that export is the necessary next step before underwriting any specific submarket.
| Submarket | Entry-cost character | Typical rental demand | Main cost drivers | Main risk | Data still to export |
|---|---|---|---|---|---|
| Downtown Bellevue (condo) | High price per square foot; smaller unit sizes lower total entry price | Tech-sector renters, walkability to employers, short commute demand | HOA dues, special assessments, management fees | HOA reserve shortfalls, condo special assessments, oversupply of competing new-construction units | Median condo price, median rent, gross yield, cap rate — by building vintage and unit size |
| Crossroads | Moderate; older housing stock, more attainable entry point | Diverse, stable long-term renter base near retail/community amenities | Deferred maintenance on older homes, property tax | Capital expenditure surprises on aging systems (roof, HVAC) | Median price/rent by property type, DOM, sample size for a true submarket median |
| Newport / Newport Hills | Mid-to-upper; established single-family neighborhoods | Family renters valuing schools and lake proximity | Property tax, landscaping/lot maintenance | Slower turnover limiting comparable rent data; lot-specific issues (slopes, drainage) | Neighborhood-specific rent comps and sample size for reliable yield estimate |
| Somerset | Mid-to-upper; hillside single-family with views | Established-family and executive renters | Property tax, HOA in some pockets, exterior/view-lot upkeep | View/slope-related maintenance, limited rental comp availability | Median price and rent by lot type (view vs. non-view), sample size |
| West Bellevue | Highest entry price; larger lots, waterfront-adjacent pockets | Smaller, higher-income renter pool; longer marketing time possible | Property tax on high assessed value, insurance, landscaping | Thin rental comp pool makes yield estimates unreliable without a wide sample | Rent comps across a wide enough sample to be statistically meaningful; cap rate by lot size |
| Bridle Trails | Mid-to-upper; equestrian-zoned and larger-lot single-family | Niche demand tied to lot size/zoning; longer-term tenants common | Lot maintenance, property tax, potential outbuilding upkeep | Small, specialized buyer/renter pool can lengthen vacancy periods | Median price/rent, sample size, gross yield and cap rate specific to Bridle Trails zoning |
Worked example 1: Downtown Bellevue condo (illustrative)
All figures below are illustrative assumptions, not verified market data. Purchase price: $750,000 (illustrative). Monthly rent: $3,200 (illustrative).
- Gross rental yield = ($3,200 × 12) ÷ $750,000 = $38,400 ÷ $750,000 = 5.12%
- Annual expenses: property tax (illustrative, ~0.92% of price) = $6,900; insurance = $1,200; HOA = $650 × 12 = $7,800; management (8% of rent) = $3,072; vacancy (5% of rent) = $1,920; maintenance reserve (8% of rent) = $3,072. Total expenses = $6,900 + $1,200 + $7,800 + $3,072 + $1,920 + $3,072 = $23,964
- NOI = $38,400 − $23,964 = $14,436
- Cap rate = $14,436 ÷ $750,000 = 1.92%
- Financing: 25% down = $187,500; loan amount = $562,500; at 6.75%/30yr, illustrative annual debt service (principal + interest) ≈ $43,780
- Pre-tax cash flow = NOI − debt service = $14,436 − $43,780 = −$29,344 (negative cash flow at these assumptions)
- Cash invested = down payment $187,500 + closing costs (2%) $15,000 = $202,500
- Cash-on-cash return = −$29,344 ÷ $202,500 = −14.5%
Under these specific illustrative inputs, this condo would be cash-flow negative and would rely on appreciation (modeled separately below) and eventual rent growth to become cash-flow positive. Changing any assumption — lower purchase price, higher rent, larger down payment, lower HOA — changes the outcome; recompute with your own numbers.
Worked example 2: Detached single-family home, east-side submarket (illustrative)
All figures below are illustrative assumptions. Purchase price: $1,550,000 (illustrative, broadly consistent with the verified citywide Bellevue median cited above, but not tied to any specific submarket). Monthly rent: $5,800 (illustrative).
- Gross rental yield = ($5,800 × 12) ÷ $1,550,000 = $69,600 ÷ $1,550,000 = 4.49%
- Annual expenses: property tax (illustrative, ~0.92%) = $14,260; insurance = $2,200; HOA = $0; management (8%) = $5,568; vacancy (5%) = $3,480; maintenance reserve (8%) = $5,568. Total = $14,260 + $2,200 + $0 + $5,568 + $3,480 + $5,568 = $31,076
- NOI = $69,600 − $31,076 = $38,524
- Cap rate = $38,524 ÷ $1,550,000 = 2.49%
- Financing: 25% down = $387,500; loan amount = $1,162,500; at 6.75%/30yr, illustrative annual debt service ≈ $90,440
- Pre-tax cash flow = $38,524 − $90,440 = −$51,916
- Cash invested = $387,500 + closing costs (2%) $31,000 = $418,500
- Cash-on-cash return = −$51,916 ÷ $418,500 = −12.4%
Note that both worked examples are negative on a pure cash-on-cash basis at current illustrative financing costs — this is common for high-price-point, high-leverage single-family purchases and is exactly why appreciation and equity build (principal paydown, tracked separately from cash flow) are typically part of the total-return story for Bellevue-area investors, not the cash-flow story alone.
Appreciation: a separate, scenario-based view (not a forecast)
Appreciation should never be baked into a base ROI calculation, and no future price is guaranteed. As an illustrative framework only, an investor might model three scenarios over a holding period — conservative (e.g., 0-2% annual appreciation), base (e.g., 3-5%), and optimistic (e.g., 6%+) — and apply each separately to a purchase price to see a range of possible equity outcomes, while keeping the cash-flow analysis above completely separate and unaffected. These percentages are illustrative examples of how to structure a scenario model, not predictions for Bellevue or any submarket.
Risk factors specific to Bellevue-area rental investment
- Vacancy: even strong submarkets can see multi-week vacancy between tenants; the 5% illustrative allowance above may understate risk for niche or high-price properties with a smaller renter pool.
- Rent growth shortfall: if actual rent growth falls short of what's needed to reach positive cash flow, negative cash flow can persist longer than planned.
- Maintenance: older housing stock (common in Crossroads and parts of Newport Hills) can carry unplanned capital expenditure risk beyond the illustrative 8% reserve.
- HOA reserve studies and special assessments: condo buyers (Downtown Bellevue) should review the HOA's reserve study and financials before purchase; an underfunded reserve can trigger a large special assessment.
- Financing: rate changes at refinance or on adjustable terms can materially change debt service and cash-on-cash return.
- Exit costs: selling costs (commission, excise tax such as Washington's REET, and other closing costs) reduce net proceeds and should be modeled before assuming a target sale price fully converts to cash.
Related considerations (see linked guides for detail)
A few adjacent topics matter for many Bellevue investors but are outside the scope of this ROI walkthrough:
- 1031 exchange timing: investors selling one investment property and buying another may be able to defer capital gains tax via a 1031 exchange, but strict identification and closing deadlines apply — consult a qualified intermediary and your CPA before listing.
- FIRPTA for foreign sellers: FIRPTA is a withholding requirement that applies when a foreign seller sells US real property — it is not a buyer-side tax and does not apply to a buyer's purchase. Foreign investors selling Bellevue-area property should plan for FIRPTA withholding at closing.
- Bellevue vs. Seattle: per the verified citywide data above, Bellevue's median price, appreciation rate and sale-to-list ratio currently run higher than Seattle's, though both markets move quickly (12 and 17 median days on market respectively). See our Downtown Bellevue guide and King County property tax by city for related cost context.
Data sources & methodology
Citywide figures for Bellevue, Seattle, Redmond, Kirkland, Sammamish and Mercer Island are sourced from NWMLS closed sales via the Willfen feed, all residential property types, all listing statuses as closed, for the period ending 1 August 2026. These are citywide, all-residential figures and are not broken down by neighborhood, single-family-only status, or luxury tier. All submarket-level entries in the comparison table and all numbers used in the two worked ROI examples are explicitly labeled illustrative assumptions for demonstration purposes; none are published NWMLS medians. To underwrite a real submarket or property, pull a fresh NWMLS export filtered by neighborhood and property type over a rolling 12-month period (stating the resulting sample size), and gather rent comps from comparable currently-leased units in that same submarket and property type.
Ready to underwrite a specific address?
This framework is a starting point, not a substitute for underwriting an actual property. If you have a specific Bellevue-area address in mind — Downtown condo, Crossroads bungalow, Somerset view lot, or anywhere else on the Eastside — submit it and Maggie Sun Real Estate Group will pull the current comps, rent data and expense estimates needed to run this same model against real numbers. Contact us to submit your address for an investment underwrite.
