Subdivision

Key Takeaways

• Washington draws the line at five: dividing land into five or more lots, tracts, or parcels for sale, lease, or transfer is a subdivision (RCW 58.17.020).
• Four or fewer lots is a short subdivision, and a city or town may raise that ceiling to a maximum of nine lots by local ordinance.
• A subdivision is recorded as a plat and a short subdivision is recorded as a short plat, and recording is what makes the new lots saleable.
• Selling, transferring, or advertising a lot before the final plat is filed for record lets the prosecuting attorney sue to stop the sales (RCW 58.17.200).

What It Means

A subdivision is the division of one parcel of land into smaller lots so that each can be sold, leased, or transferred on its own. Washington decides which rules apply by counting lots. Dividing land into five or more lots is a subdivision; four or fewer is a short subdivision (RCW 58.17.020). The count is what controls, not the acreage involved or the reason for the split.

The process is part Survey and part public record. A land surveyor lays out the new boundaries on the ground, and the map that results, called a plat, is reviewed by the city or county and then recorded. Recording is the step that gives every new lot its own Legal Description, so a buyer can be conveyed Lot 7, Block 3 of a named plat instead of a long recital of courses and distances. That is why platted ground is described under the Plat Map Lot And Block Survey System.

Local government sets the terms of approval. Under chapter 58.17 RCW a plat has to satisfy local Zoning standards for lot width and area, road and drainage requirements, and any dedications for public use before it is approved. A parcel that pencils out on paper can still fail because the lots it creates are too small to meet the zone.

How It Works in Washington

In Washington, chapter 58.17 RCW governs the division of land, and every subdivision must comply with it (RCW 58.17.030). The five-lot line is drawn in RCW 58.17.020: five or more lots, tracts, parcels, sites, or divisions created for the purpose of sale, lease, or transfer of ownership is a subdivision and needs a full plat, while four or fewer is a short subdivision recorded as a short plat. That line is a starting point, not a fixed number. The legislative authority of a city or town may by ordinance increase the number of lots regulated as short subdivisions to a maximum of nine, and counties planning under the growth management laws may do the same inside urban growth areas. Check the local code before telling a client the project qualifies as a short plat.

The selling rule is the one that reaches brokers. Under RCW 58.17.200, when a parcel is divided into five or more lots and any person, firm, corporation, or agent sells, transfers, or offers or advertises a lot for sale before a final plat is filed for record, the prosecuting attorney commences an action to restrain the sales and compel compliance, with costs taxed against the seller. RCW 58.17.300 makes a violation a gross misdemeanor and treats each separate lot sold, offered, leased, or transferred as a separate and distinct offense.

Example

Dana owns 12 acres outside Olympia and wants to sell house lots. Her first plan is four lots of three acres each. Four lots is a short subdivision under RCW 58.17.020, so the county reviews a short plat. Her engineer then says the drainage works better with six lots of two acres each, and that change moves the whole project: six lots crosses the five-lot line, so it becomes a full subdivision needing preliminary plat approval and a recorded final plat.

In March, with the final plat still in review, Dana lists the first lot at $189,000 and her broker writes an offer and opens escrow. That is the mistake. Because the parcel is being divided into six lots, RCW 58.17.200 reaches any sale, transfer, or advertisement of a lot before the final plat is filed for record, and RCW 58.17.300 would treat each of the six lots sold that way as a separate gross misdemeanor. The correct sequence is to hold the listings, record the final plat, and then sell all six lots. Had Dana stayed with four lots at three acres each, the short plat route would have been open to her.

Common Mistakes and Exam Traps

• Five or more lots is a subdivision and four or fewer is a short subdivision, so a five-lot division can never be handled as a short plat under state law.
• A plat is the recorded map, while the subdivision is the act of dividing the land. A question asking what gets recorded is asking about the plat.
• The nine-lot short subdivision figure is a local option a city or town may adopt by ordinance, not the statewide default.
• Preliminary plat approval does not make lots saleable. Filing the final plat for record is the step RCW 58.17.200 measures against.