King County's proposed 2027 flood-control budget and tax levy: What homeowners should know

King County's proposed 2027 flood-control budget and tax levy: What homeowners should know

King County is reviewing how it will fund flood protection, stormwater improvements, and related infrastructure in 2027.

For property owners in Maple Valley, Auburn, Enumclaw, and surrounding communities, the proposal raises practical questions. Could the property-tax levy change? Which cities may receive funding? And does a planned flood-control project mean a nearby home is better protected?

On October 13, 2026, the King County Flood Control District considered resolutions addressing its 2027 budget, work program, and property-tax levy.

As of October 20, 2026, final adoption has not been established in the official legislative records reviewed.

The District has also published estimated 2027 allocations through its Subregional Opportunity Fund, including money for communities across South King County.

Understanding the distinction between proposed funding, approved projects, and property-specific risks is the most useful starting point for homeowners.

Key takeaways

• The King County Flood Control District considered its proposed 2027 budget and property-tax levy on October 13, 2026.
• Budget Resolution FCD2026-11 remains listed as In Committee.
• A separate proposal, FCD2026-12, addresses the District's 2027 property-tax levy.
• The proposed levy includes language about protecting up to $0.25 per $1,000 of assessed value from proration. This is not confirmation of a new tax increase.
• The 2027 Subregional Opportunity Fund is estimated at approximately $8.8 million.
• Draft allocations include $164,788 for Auburn, $73,512 for Maple Valley, and $29,317 for Enumclaw.
• Local allocation estimates are not guarantees that particular projects will be funded or completed.
• Buyers and homeowners should evaluate flood risk, drainage history, and insurance separately from government funding announcements.

What is the King County Flood Control District?

The King County Flood Control District is a special-purpose government responsible for funding and overseeing flood-risk reduction projects and programs across King County.

Although it works closely with King County government, the District is a separate governmental entity.

According to the District's official resident FAQs, King County serves as its primary service provider through an interlocal agreement.

The District helps fund work involving flood protection, river corridors, stormwater systems, and related infrastructure.

Its programs can include:

• Levee and floodwall improvements
• Riverbank and channel management
• Flood-risk reduction projects
• Stormwater infrastructure
• Property acquisition and flood mitigation
• Watershed-related projects that meet program requirements
• Planning and technical studies

These activities are funded and managed through different programs.

The annual budget establishes planned expenditures and financial priorities. Individual projects may also require separate approvals, engineering, permits, and implementation schedules.

What is King County proposing for flood control in 2027?

The District is reviewing a proposed annual budget and work program for 2027.

The official proposal, Resolution FCD2026-11, concerns the District's operating finances, capital budget, work program, and authorization of improvements.

Its supporting documents include proposed operating and capital budgets, a six-year capital improvement program, and draft funding allocations.

A separate measure, Resolution FCD2026-12, concerns the property-tax levy intended to support the District's 2027 budget.

These are related but distinct decisions.

The budget addresses planned uses of money. The levy addresses the property-tax revenue authorized to help fund that work.

Neither should be confused with an individual city's stormwater utility bill or a separate drainage-district assessment.

What happened at the October 13 meeting?

The King County Flood Control District considered both the proposed 2027 budget and the related levy during its October 13 meeting.

The legislative record for FCD2026-11 lists the budget resolution as In Committee, without a final enactment date.

The official October 13 meeting record also identifies FCD2026-12 as an agenda item.

The meeting minutes are marked draft, and the official meeting page does not provide finalized action results.

That distinction matters.

A proposed resolution or published agenda item is not evidence that a measure has been adopted.

Property owners should wait for the final legislative record before relying on a particular levy rate, expenditure, or project allocation as approved.

The District's funding materials anticipate final budget consideration in November 2026.

Could the proposed flood-control levy affect property taxes?

The District's property-tax levy is one component of the tax structure affecting King County property owners.

However, the proposed 2027 levy does not establish that every homeowner will experience the same tax change.

Property taxes depend on several factors, including assessed value, applicable taxing districts, authorized levy amounts, and levy rates.

King County's Assessor levy-rate resources explain how different taxing districts and levy codes contribute to property-tax calculations.

Two similarly priced homes in different communities may have different combined property-tax rates.

For a detailed explanation, see our guide to King County property taxes for South King County homeowners.

Does the $0.25 provision mean a new tax increase?

Not by itself.

The title of proposed Resolution FCD2026-12 refers to protecting up to $0.25 per $1,000 of assessed value from proration.

Proration is a process under Washington property-tax law that can reduce certain levies when overlapping taxing districts reach applicable limits.

The language concerns the treatment of the District's levy within those rules.

It is not sufficient evidence that a new $0.25 charge will be added to every homeowner's existing tax bill.

It also should not be used to calculate an individual property's expected 2027 tax increase.

How can homeowners determine their actual tax obligation?

The correct approach is to review the property's tax record after applicable levy rates have been finalized.

Homeowners should examine:

1. The property's assessed value.
2. The applicable levy code and taxing districts.
3. The finalized annual levy rates.
4. Existing exemptions or deferrals, where applicable.
5. The actual property-tax statement.

A proposed levy resolution is useful context, but it cannot replace the final parcel-specific tax information.

What is the Subregional Opportunity Fund?

The Subregional Opportunity Fund is an annual funding program administered by the King County Flood Control District.

It supports eligible projects involving flood control, stormwater management, and certain related watershed activities.

According to the District's official program guidance, 10.23% of annual levy proceeds is reserved for the fund.

For 2027, the District estimates approximately $8.8 million will be available.

That amount is not the entire Flood Control District budget.

It represents a specific funding program within the District's broader financial plan.

How are Opportunity Fund allocations determined?

The program distributes funding among King County jurisdictions using assessed-property-value information, with a minimum allocation established under program rules.

Each eligible jurisdiction can generally:

• Propose a new qualifying project.
• Add funding to a previously approved project.
• Defer its allocation for possible future use.

A jurisdiction may also have unused funding from earlier years.

The application deadline for the 2027 program was October 6, 2026.

Applications are reviewed for completeness and eligibility before proposed projects are incorporated into the District's annual work program.

Does receiving an allocation mean a project is approved?

No.

A draft allocation identifies estimated funding available to a jurisdiction.

A project still needs to meet eligibility and approval requirements.

The District's guidance explains that an approved project may be funded through reimbursement after the jurisdiction submits the required documentation.

Project completion may also depend on design, environmental review, permitting, construction procurement, and other implementation steps.

The presence of a dollar amount in the draft table is not proof that a particular neighborhood improvement is underway.

How much proposed funding could go to South King County?

The District's published draft allocations identify estimated 2027 Opportunity Fund amounts for individual jurisdictions.

For South King County communities, the estimates include:

Countywide estimated Opportunity Fund total: $8,804,814.

These figures come from the District's preliminary allocation table.

The King County entry is an allocation to that jurisdiction within the program. It is not the fund's total budget.

The District expects the allocation amounts to be revised when the final work program is approved.

What does Maple Valley's allocation mean?

Maple Valley's estimated $73,512 allocation represents potential funding through the program.

It does not, by itself, identify an approved neighborhood project or construction date.

Property owners interested in stormwater improvements should review the city's own project documents and any applications submitted to the District.

For an example of a separate local drainage project, read our guide to the Cedar Downs flooding project in Maple Valley.

That project should not automatically be treated as a recipient of the proposed 2027 Opportunity Fund allocation without confirmation.

What about Auburn and the Green River?

Auburn's draft allocation is $164,788.

The Green River is a major part of the area's regional flood-management context, but a citywide allocation does not identify which Auburn properties or projects may benefit.

A homeowner near the Green River should check existing flood-risk information, the relevant public project records, and the property's condition rather than assume the allocation will fund work nearby.

What should Enumclaw-area property owners know?

Enumclaw's draft allocation is $29,317.

Rural properties can involve additional drainage considerations, including roadside ditches, private culverts, easements, and local drainage facilities.

Those responsibilities may involve different organizations.

The Flood Control District's program is distinct from the governance and assessment issues discussed in our article about King County Drainage District 5 near Enumclaw.

A proposed countywide funding allocation does not establish that an individual parcel belongs to a particular drainage district or owes a new special assessment.

Why does flood-control funding matter for real estate?

Flood-control funding matters because drainage and water-related hazards can influence the practical costs and responsibilities of owning property.

Public infrastructure may help reduce certain risks.

However, it does not eliminate every possible cause of flooding.

For example, water problems at a property might involve:

• River flooding
• Surface runoff from roads or nearby land
• Blocked or undersized drainage systems
• High groundwater
• Poor lot grading
• Damaged private drainage pipes
• Sewer or stormwater backups
• Erosion near waterways
• Water entering crawl spaces or basements

The causes of these problems can differ significantly.

A new public drainage facility may help manage neighborhood runoff while leaving an unrelated private foundation-drain problem unresolved.

For real estate purposes, the distinction between public infrastructure and private-property conditions is essential.

How can homeowners and buyers check a property's flood risk?

Begin with official maps and records, then investigate the property itself.

The King County Flood Control District's Flood Risk Map allows users to search an address and review mapped flood-risk areas.

Flood-risk mapping helps identify areas where further due diligence may be appropriate.

But an absence of a mapped high-risk flood zone does not guarantee that a property has never experienced drainage problems.

Review the property's history

Ask about known flooding, standing water, past drainage improvements, and water intrusion.

For buyers, seller disclosures and inspection findings are important parts of this process.

Check grading and drainage

Look for low areas where water collects, soil sloping toward structures, blocked drains, deteriorated culverts, or other signs of recurring runoff problems.

Consider professional inspection when conditions suggest a concern.

Review flood-insurance needs

Most standard homeowners insurance policies do not cover damage caused by flooding.

The National Flood Insurance Program's consumer guidance explains important distinctions between homeowners insurance and flood insurance.

Some lenders require flood insurance for qualifying properties in designated high-risk areas.

Others may not require it, but buyers may still want to evaluate the available coverage.

Our existing guide to buying a home in a flood-prone area provides a broader buyer due-diligence checklist.

Identify nearby public infrastructure

Look for public drainage facilities, river improvements, detention ponds, and recorded easements.

Confirm which government, district, association, or private owner is responsible for maintenance.

Do not assume a facility is publicly maintained simply because it is visible from the road.

Will the proposed 2027 budget increase home values?

There is no verified evidence that the proposed 2027 flood-control budget will produce a specific increase in nearby home values.

Public investments can be relevant to how an area manages infrastructure and risk.

But home prices depend on more than a funding allocation.

Property condition, comparable sales, location, mortgage rates, housing supply, buyer demand, and individual property characteristics also matter.

Even when an infrastructure project is eventually completed, its effect on a particular home may be difficult to isolate.

A draft budget is an earlier stage than construction.

It should be treated as information about public planning rather than a prediction about appreciation.

What should sellers know about drainage and flooding?

A seller should not assume that a public flood-control project removes the importance of the property's own condition and history.

Known drainage problems, water intrusion, repairs, and relevant property conditions may need to be addressed through applicable disclosure and transaction processes.

Sellers can prepare by organizing available records, including:

• Drainage and foundation repair invoices
• Inspection reports
• Insurance-related documentation
• Prior flooding or standing-water information
• Relevant permits
• Recorded drainage easements
• Correspondence with agencies responsible for nearby infrastructure

Our guide to home insurance after storm damage in King County discusses why accurate documentation can matter after water-related damage.

Property-specific disclosure questions should be reviewed with the appropriate real estate or legal professionals.

What should homeowners watch as the 2027 budget moves forward?

The first thing to watch is the District's final decision on the 2027 budget and property-tax levy.

The second is the approved work program.

The third is whether individual jurisdictions receive approval for specific projects through the Subregional Opportunity Fund.

The District maintains official records through its transparency and budget resources.

The most useful updates will answer concrete questions:

• Has the budget been adopted?
• What levy was actually authorized?
• Which local funding amounts were finalized?
• Which project applications were approved?
• What work is scheduled?
• Which agency is responsible?
• When will construction begin, if applicable?

Those answers are more useful to property owners than a general promise that flood protection will improve.

Expert insight: Evaluate the individual property, not just the funding announcement

For homeowners and buyers in South King County, the proposed 2027 flood-control budget is worth following. But it should be viewed as one part of property research.

A city receiving draft funding does not establish that every home in that city is at flood risk.

It also does not guarantee that a particular home will benefit from a completed project.

The property itself remains the starting point.

Before purchasing near a river, creek, drainage corridor, or low-lying area, review available flood maps, known water history, insurance options, site conditions, and relevant public records.

For sellers, accurate documentation about known drainage conditions and improvements can help answer buyer questions.

At Perkins & Associates, our role is to help buyers and sellers understand the real estate considerations behind these decisions, while directing technical flood, drainage, insurance, and engineering questions to qualified professionals.

Frequently asked questions

Has King County approved its 2027 flood-control budget?

As of October 20, 2026, the official record reviewed for Resolution FCD2026-11 lists it as In Committee. The October 13 meeting minutes were not finalized.

Is King County adding a new flood-control property tax in 2027?

The Flood Control District is reviewing its annual property-tax levy. The proposal does not establish that every property owner will receive a specific additional charge.

What does the $0.25 per $1,000 provision mean?

The proposed resolution references protecting levy authority from proration. It should not be interpreted as a confirmed new property-tax rate or an automatic increase to an individual tax bill.

What is the Subregional Opportunity Fund?

It is an annual program receiving 10.23% of the Flood Control District's levy proceeds for eligible flood-control, stormwater, and related watershed projects.

How much draft funding is allocated to Maple Valley?

The published 2027 estimate is $73,512, subject to the District's final budget and work-program decisions.

Does receiving an allocation mean construction is approved?

No. Jurisdictions must follow the program's project application and approval requirements.

How can I find out whether my home is in a flood-risk area?

Use the Flood Control District's address-search map and official flood hazard information. Review the property's actual drainage and water-intrusion history as well.

Does homeowners insurance cover flood damage?

Most standard homeowners insurance policies do not cover flood damage caused by rising water. Separate flood insurance may be available, and some lenders require it for qualifying properties.

Can a flood-control improvement increase my home's value?

A completed improvement may be relevant to property research, but there is no basis for assigning a specific increase in value based on the proposed budget alone.

Helpful resources

• King County Flood Control District: 2027 budget resolution FCD2026-11
• King County Flood Control District: October 13 meeting record
• King County Flood Control District: Subregional Opportunity Fund
• King County Flood Control District: Transparency and budget documents
• King County Flood Control District: Flood Risk Map
• King County Assessor: Taxing districts, codes, and levies
• National Flood Insurance Program: Insurance guidance

Buying or selling property in South King County?

Flood exposure, drainage conditions, insurance, and local infrastructure can all be part of an informed property decision.

Perkins & Associates helps buyers and sellers throughout Maple Valley, Auburn, Enumclaw, and surrounding South King County communities understand property characteristics, local conditions, and real estate opportunities.

If you're considering a property where flooding or drainage may be a concern, our team can help you identify the real estate questions to investigate and coordinate appropriate professional due diligence.

Contact Perkins & Associates to discuss your next move.