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Aditya Kasturi | Realogics Sotheby's International Realty

Gutter, Drainage & Grading Audit

on the Eastside, every lot has an opinion about where water should go - usually downhill, toward the lake, sometimes through your foundation.

Pacific Northwest exterior used for seasonal maintenance planning.

Seasonal Maintenance

What this article helps you decide

> This is the Eastside checklist. Nearly every lot in town drains toward Lake Washington, so grading, downspouts, and retaining walls decide whether winter water runs past your foundation or into it. Trace the water before the rain does.

Work through the decision in order

Roof to ground

Clear gutters; check for overflow stains. Trace every downspout to a working discharge point well downslope - not against the foundation.

The grade (the Eastside part)

Confirm the ground falls away from the foundation, especially on the uphill side. Note pooling and soggy ground after the first heavy rain.

Slope hardware

Check retaining walls for bulging, cracks, and blocked weep holes. Look for uphill/neighbor water crossing the lot; check area drains and swales.

Article worksheet · browser private

Gutter, Drainage & Grading Audit

Use the worksheet without a form. Keep your notes in this browser, then bring the live facts into a Real Estate Review if the decision still matters.

Gutter, Drainage & Grading Audit decisions

Roof to ground

The grade (the Eastside part)

Slope hardware

Questions about Gutter, Drainage & Grading Audit

Clear answers first. If one question changes the deal, bring it into the review before you move money.

Q1Why is grading the single most important maintenance item on these lots?+

Because nearly every lot slopes toward the lake, so grading, downspouts, and retaining walls decide whether winter water runs past your foundation or into it. Get the water routing right and most downhill problems never start.

Q2Where should my downspouts actually discharge?+

Well downslope, to a working discharge point away from the foundation — never dumping against the house. Overflow stains and pooling at the base are the tell that a downspout is feeding the foundation.

Q3What am I checking on a retaining wall, and when is it serious?+

Bulging, cracks, and blocked weep holes. Weep holes that can't drain build water pressure behind the wall; bulging or leaning means it's already losing. On a slope, the uphill wall protects everything below it, so price it first.

Q4How do I spot a grading problem I can actually see?+

After the first heavy rain, look for pooling, soggy ground, and water flowing toward the foundation rather than away, especially on the uphill side. Rain is the cheapest diagnostic you'll get.

Q5How much should drainage weigh in an offer on a slope lot?+

A lot. Grading and retaining walls quietly move offers because the fixes range from regrading to five-figure wall work. Read the lot before you write, not after inspection.

Q6I found uphill or neighbor water crossing my lot — what now?+

That's a shared-water issue: area drains, swales, or an interception drain usually handle it, but the fix depends on volume and property lines. Map it before the wet season and get a drainage contractor's read.

Apply the article to the live decision.

Buying on a the Eastside slope? Grading and retaining walls quietly move offers - bring the lot to a Real Estate Review before you write.

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Last updated: August 2, 2026

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