Kan Cui And Yan Liu, V. Melina Lin

Court of Appeals of Washington·Decided August 17, 2026·No. 88906-1·Unpublished

Opinion

IN THE COURT OF APPEALS OF THE STATE OF WASHINGTON

KAN CUI and YAN LIU, husband and wife, No. 88906-1-I

Appellants, DIVISION ONE v. UNPUBLISHED OPINION MELINA LIN, a single person, Respondent.

MANN, J. — Kan Cui and Yan Liu sued Melina Lin alleging that Lin failed to comply with her obligations under a signed agreement settling an earlier dispute about the extension of a shared dock. Cui and Liu appeal the trial court’s order dismissing their complaint on summary judgment.

Because genuine issues of material fact remain, we reverse and remand for trial.

I

Cui and Liu are married and have lived on a property on North Mercer Way since 2010. Cui and Liu’s property is upland and does not front on Lake Washington. Lin’s property is next door to Cui and Liu and fronts on Lake Washington. When these two properties were subdivided in 1979, the developer established easement rights between the two properties so that the upland property would have full ingress and egress to

Lake Washington, where there is a shared beach, dock, boathouse, and moorage buoy rights.

After Lin purchased and moved to her property in 2017, Lin denied access to a portion of her driveway that Cui and Liu had used for years. Cui and Liu sued and obtained an order protecting their access rights. Cui and Liu also recovered their attorney fees and costs. The parties have not been on good terms since.

In February 2022, Lin submitted an application to the City of Mercer Island (City)

to construct a dock extension that branched off the existing shared dock. According to Lin, she approached Cui and asked if he was interested in joining the dock extension, and he declined.

Cui and Liu objected to Lin’s dock extension and filed an appeal of the City’s shoreline permit to the Shoreline Hearings Board (SHB). On October 25, 2022, before the SHB hearing on the merits, the parties settled and entered a written “Agreement to Construct Dock Extensions” (agreement). The agreement provided that each party would be able to construct their own dock extension for their exclusive use. The agreement included the following terms:

1. Lin agrees to the current dock being extended up to a length allowed by code and at about the similar length as Lin’s proposed approved dock extension, by Cui, under the agreed terms and conditions herein. If this dock extension cannot be approved to a length of 50 feet or more, then this Agreement shall be void and of no effect, except for paragraph 4.

This extension is referred to as the Cui new dock extension. This extension is only for a dock extension; no additional structure shall be constructed on the dock without Lin’s express consent.

2. The Cui new dock extension must meet the code/standards, and regulations, and Cui must obtain all the required permits, and pay for all the fees, costs, modifications, improvements arising from this dock extension.

3. Using a dock construction company reasonably acceptable to both parties, all applicable shoreline and government standards and regulations will be adhered to. Lin is not held liable legally or financially for any code compliance or claims in any form, due to Cui new dock extension. Lin will be held harmless from any liabilities resulting from the construction and the use by Cui and Cui’s guests of the Cui new dock extension.

4. Lin dock extension is solely owned and used by Lin. Lin will have exclusive use of the Lin dock extension and accompanying boat lifts and jet ski lifts which have to date been approved by the government bodies.

Lin’s dock extension will continue uninterrupted by Cui. Cui agrees not to interfere with the Lin Dock extension project and construction. Cui agrees to the construction of Lin Dock extension. Lin has the exclusive right to decide the usage on the Lin property shoreland that is on the right side of the existing dock.

5. The current Cui moorage ring buoy entitlement and anchor, allows the moorage of a boat in basically the same location as the Cui new dock extension. There are no changes on any existing easements currently in place. But when Cui new dock extension is approved and built, all the easement terms related to ring Buoy and its related rights shall become obsolete and superseded.

....

8. This Agreement is not to extend any existing easement rights from the existing dock into the Cui’s new dock extension unless otherwise stated.

The easement rights for the Cui's new Dock extension are specifically stated in this agreement.

....

11. Cui shall be granted full long-term perpetual and appurtenant easement rights for use and enjoyment of the Cui new dock extension as described. Cui shall have exclusive use and moorage of the left portion of the Cui new dock extension.

....

13. Both parties will fully and in good faith cooperate with each other in the construction of both the Lin and Cui new dock extensions.

14. The terms of this arrangement would be put into writing as some amendments or redrafting of prior Declarations would be required. These amendments will be recorded to King County only after Cui new dock extension has been built. Cui must apply for the Cui new dock extension

to the appropriate government authority (in this case the City of Mercer Island) within 2 years after the date of this Agreement and must substantially construct the new dock extension within three (3) years after all required permits are granted/approved. If either of these time requirements are not met, then this agreement will become void and all easements in this Agreement will be of no effect, except for paragraph 4.

15. The location and construction of the Lin and Cui new dock extension will not impede or obstruct any prior easement rights of either party unless it is stated otherwise.

....

17. The parties hereto shall execute and deliver all documents and provide all information as may be necessary or appropriate to achieve the purposes of this Agreement.

18. This Agreement is not designed to change or alter any previous easement agreements or rulings regarding the waterfront and dock rights of the parties.

....

20. If permits and applications for Cui new dock extension are rejected for any reason, then this Agreement will be invalid and of no further effect.

Based on the agreement, the SHB appeal was dismissed. Lin then began construction of her dock extension with Seaborn Pile Driving (Seaborn) as the contractor. Lin’s dock extension was completed in 2023.

Cui and Lin also retained Seaborn to construct their dock extension. On December 16, 2022, at Lin’s request, Cui and Liu sent Lin their proposed dock extension plan. Seaborn informed Cui and Liu that they would need to obtain four permits or approvals: (1) review under the State Environmental Policy Act (SEPA); (2) a City building permit; (3) a permit from the Washington State Department of Fish and Wildlife; and (4) a permit from the US Army Corps of Engineers. The SEPA review and

building permit was required by the City. Cui and Liu, through Seaborn, applied to the City for their dock extension in February 2023.

Because Lin owned the property where the dock extension was proposed, the City required Lin’s written approval before it could approve the permits. On June 7, 2023, the City asked both parties to re-sign the dock extension agreement in front of a notary so that Cui and Liu’s permit could be approved. The City stated that the application would be on hold until it received the notarized agreement. The City set a deadline of September 5, 2023, or Cui and Liu’s permit application would expire. Both parties received the letter.

On September 8, 2023, the City e-mailed Seaborn stating that the dock extension agreement needed to be re-signed and notarized. Lin responded that she would hire an attorney to review the agreement. Cui and Liu asked the City to extend the deadline date to October 4, 2023.

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