While development has been broad-based among the various property types, there have been some notable trends by property type during the last 10 years, according to the Cushman & Wakefield report.

Some 8.8 million square feet of new office construction has completed including significant renovations.  While there have been some significant additions in the suburbs during the last 10 years such as the Intel and Nike campus expansions, most of the focus in the office market has been downtown and the close-in submarkets. Class-A rent in the CBD has increased 45.3% during the last decade while suburban class-A rent grow has been less than half of level at 21.2%.  In previous cycles, the CBD and suburban markets tended to move in lock step.

Nearly 50% of all new commercial construction during the last 10 years has been multifamily housing to the tune of 44,300 new units. Historically speaking, single-family building permits have been about double multifamily permits in any given year. However, since about 2013, multifamily permits have at least equaled single family every year and from 2017 to 2019, multifamily permits have soared well above those for single-family homes.

At 22.8 million square feet of new industrial flex construction, the industrial market has been on a tear for several years now with record low vacancy and surging rent, up 30% during the last 10 years. One of the biggest trends during this period has been the growth in size of new warehouses. In Portland, a 250,000-square-foot warehouse used to be considered a "big bomber" but now there are regularly 500,000 and 1 million-square-foot boxes.

Despite all the headlines about the demise of retail, the market has posted considerable growth with 6.6 million square feet of new construction and vacancy remains near historic lows at 3.4%. However, major new mall developments have been missing in the last 10 years and are not likely to reappear anytime soon. New construction has primarily been grocery-anchored shopping centers and large format freestanding stores as retailers continue to expand in the suburbs.

Hotels are second only to multifamily in terms of percentage growth during the last 10 years. With 4,066 new rooms, the Portland region has posted an increase in the total number of hotel rooms including the long-awaited 600-room Hyatt convention center hotel.

"By now, most investors have bought into the Portland story but it's pretty astonishing to look at the raw numbers and see just how much growth there has been," Lewis tells GlobeSt.com. "The 85 million square feet of new construction is almost equivalent to rebuilding Portland's entire office market in just 10 years. With another 16 million square feet currently under construction, broadly speaking, we expect growth to continue. Portland has a lot of great things going for it in terms of an educated workforce, excellent transportation network, high growth industry clusters, affordable housing and easy access to the outdoors. We are also right in the middle of two hyper-dynamic job creators in the Bay Area and Puget Sound region. Companies in those areas are increasingly looking outward for talent and Portland is near the top of the list for expansion options."

Amid these changes, Lewis points out that some things have remained squarely the same.

"Indeed, much has changed in the Portland commercial real estate market over the last decade, but that beloved Portland vibe and authenticity remains the same for the most part," says Lewis. "And while growth has cooled from the blistering pace of a few years ago, from a real estate standpoint, fundamentals remain excellent and our near-term outlook bright. We enter this next decade on much stronger footing than where things stood 10 years ago. We have job growth, population growth and a low interest rate environment. This favorable combination should help continue to propel the Portland market forward."