
Flat & Low-Slope Roofing
Membrane roofing built to shed water, not hold it.
Learn about Flat & Low-Slope RoofingOffice parks and apartment complexes packed into a freeway interchange bowl, not a house-lined subdivision.
Factoria sits about three miles south of downtown Bellevue, in the low bowl where I-90 meets I-405. It is a landmark of retail and office parks more than a neighborhood of houses, and Factoria Boulevard SE is its working spine, a corridor built for drive time, not porches.
The wet season, shade-grown moss, and aging flashing do more damage over time than any single storm.
A stain on a ceiling is almost never directly under the hole. Water runs along a rafter until something stops it, so in Factoria the entry point is often several feet uphill of the mark, and finding it is most of the work.
Factoria is mostly commercial and multifamily flat/low-slope roofing sitting in the low I-90/I-405 interchange bowl rather than up on a wind-exposed ridge; the mix of office parks and apartment complexes means most roof work here is commercial-grade rather than residential pitched roofing. Roofs in Bellevue rarely fail from one dramatic event. They fail from months of dampness that never fully lifts, especially under shade where moss holds water against the shingle longer than the sun can dry it out. Watching for lifted edges, clogged valleys, and slow drips after the rain settles is more useful here than watching the forecast.
The presence of T-Mobile USA, Marketplace at Factoria retailers shapes the local workload. Rooftop units, their curbs and the drains around them are the usual pressure points, and a scheduled inspection beats waiting for a ceiling tile to go.
Ballpark figures so you can plan. Nothing is charged until you have seen a written estimate for your own property.
| Service | Estimated cost |
|---|---|
| Roof Replacement | an estimated $11000–$30000 |
| Roof Repair | an estimated $400–$2200 |
| Flat & Low-Slope Roofing | an estimated $9000–$26000 |
The Marketplace at Factoria anchors the retail side of the neighborhood, a shopping center whose flat roofline sits low against the interchange rather than up on any ridge.
Newport Corporate Center represents the office-park half of Factoria, low-slope commercial roofing built for the tenants who lease here, not for a single homeowner down the block.
Factoria Boulevard SE is the arterial that ties the retail and office frontage together, the address most people give when they mean this stretch of Bellevue.

Membrane roofing built to shed water, not hold it.
Learn about Flat & Low-Slope RoofingLake Hills · Bridle Trails · Crossroads · Eastgate · Downtown Bellevue · Issaquah · Kirkland · Kenmore
Factoria's housing stock leans heavily toward 1960s-1980s apartment and condo complexes with flat or low-slope roofing, plus newer office and retail redevelopment nearby. The licensed pros we connect you with take on that flat-roof membrane work directly, distinct from the pitched composition-shingle jobs common on single-family streets elsewhere in Bellevue.
In a condo or apartment complex, the roof usually falls under the building's ownership association or property management rather than an individual unit owner. Check your HOA or condo association documents first; if you own a standalone unit or the association directs you to hire directly, the licensed pros we connect you with can quote the job.
Factoria developed heavily after freeway construction reshaped this pocket of Bellevue, favoring apartment, condo, and office-retail redevelopment over single-family lots. Compared to neighboring residential areas, there is relatively little older house stock here, so most roofing work concerns multifamily and commercial buildings rather than a single homeowner's roof.
Yes. Factoria's office parks and apartment complexes mostly use flat or low-slope membrane roofing rather than pitched composition shingle, so problems tend to show up as ponding water, seam failures, and clogged drains rather than moss lift or curling shingles. The licensed pros we connect you with handle that low-slope work specifically.
Reach out through this site and we connect you with licensed, bonded roofing pros who cover the Factoria area, whether the job is a retail roof near the Marketplace, an office building along Factoria Boulevard SE, or a condo or apartment complex roof under an HOA's direction.
If water is still spreading, a ceiling is sagging, or it has reached outlets or a panel, call now and it is handled as an emergency, day, night, weekend, or holiday. Factoria is a short drive from Bellevue, which keeps response times short. For a contained problem that has already stopped, a planned visit costs less for identical work.
Every Bellevue neighborhood carries its own version of the same weather - heavier moss under the conifer cover near Cougar Mountain and Lakemont, more wind exposure along the lake shore near Enatai and Meydenbauer. What matters is how those conditions have treated your specific roof. The licensed pros we connect you with know how local terrain and tree cover show up on a roof, and they will look at yours directly rather than guess from a neighborhood average.
Call (425) 380-0932