2026 buyer planning guide · Sammamish, Washington

What might a Sammamish home cost to care for each year?

Sammamish homes often pair larger lots with substantial tree cover and seasonal irrigation. Buyers should account for drainage, vegetation, roof and gutter care, plus the water district and parcel-specific tax rate.

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Keep the categories separate

A practical annual planning range

The example uses the same assumptions across every city page so buyers can compare locations. Enter the actual home’s details for a more useful result.

01

Routine maintenance

$1,850–$3,450

Recurring care and likely annual work using a hybrid DIY/professional approach.

02

Utilities

$4,625–$5,475

Electricity, water, sewer, garbage, and internet for the example household.

03

Property tax

$8,400–$9,100

Estimated from the example price and local rate band; verify the parcel levy code.

Recurring utilities

Sammamish example breakdown

electricity$1,250–$1,525per year
water$825–$975per year
sewer$1,325–$1,550per year
garbage$400–$450per year
internet$825–$975per year

Local considerations

What buyers should verify

  • Large-lot irrigation and summer water use above the typical household range.
  • Tree, moss, gutter, and drainage work around wooded or sloped parcels.
  • The serving water and sewer district, which can differ within the city.
  • King County sewer capacity charge: If the property has a qualifying newer sewer connection, the current owner may owe this charge for 15 years. Confirm the remaining balance during title review.

How to use this estimate

Bring better questions to due diligence

  1. Ask the seller for the last 12 months of utility bills.
  2. Confirm the utility providers serving the exact address.
  3. Check the parcel’s consolidated levy rate and assessments.
  4. Use the inspection to adjust near-term maintenance reserves.

Sources and estimate boundaries

Sammamish Plateau Water and Northeast Sammamish service areas can differ within the city; confirm the serving district by address. Larger lots and irrigation can push summer water use above this planning range.

Puget Sound Energy rates ↗Sammamish Plateau Water rates ↗King County 2026 levy-rate reports ↗King County sewer capacity charge ↗FCC National Broadband Map ↗
Planning estimate—not a quote, inspection, appraisal, disclosure, or tax bill. One-time development and connection fees are excluded.

Use the actual home

Replace the example with its ZIP, price, size, and age.

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