Thanks to these user-friendly real estate sites and apps, you can search for commercial space from your sofa:

1. LoopNet: Searchable by location and price, this database is the closest thing to MLS—the service all U.S. residential Realtors use to post homes for sale—for commercial property. (loopnet.com; loopnet.com/mobile)

2. SHOWCASE: Run by commercial real estate market research firm CoStar, this searchable site is packed with photo galleries. (showcase.com)

3. Craigslist: Retailers in smaller markets should do a search of commercial properties listed on Craigslist, a go-to site for landlords looking to lease quickly. (craigslist.org)

4. CBRE: Search listings from ubiquitous commercial real estate firm CB Richard Ellis. (cbre.us)

5. CommercialSearch: This property-listing website sorts commercial spots for lease and for sale by state. (commercialsearch.com)