As we noted yesterday, House Bill 1490 has encountered a lot of opposition from people who think it will turn their neighborhoods into little Manhattans. The bill would mandate net densities of 50 units per acre in the half-mile radius around transit stations and would also eliminate parking minimum requirements in those areas.
Representative Sharon Nelson introduced the bill and sent this FAQ (Word doc) with an analysis of the Mt. Baker Station--one of the stations that people speculated would require an upzone. The area around the station just makes the cut, at 51.2 units per acre.
Given that the Mt. Baker has two major arterials in its radius (Rainier and MLK), it'll be interesting to see whether other Southeast Seattle stations that only have one major arterial in their radius make the cut. A great set of maps of those stations can be found here.
Of course, given that over two-thirds of the land in the Mt. Baker radius is zoned single family, it shouldn't be too hard for any Seattle station that finds itself under the required zoning density to upzone a street or two to accommodate low-rises or detached dwellings and to meet the bill's requirements. That's if the bill passes. While she wouldn't make any predictions, Nelson says "we dropped it knowing it would need some perfecting," and estimates "we've got 2.5 weeks to get it out of its originating house."