Ding dong! No concierge, no problem: Doorman CEO

The virtual doorman
The virtual doorman   

Some fortunate apartment and condo building residents have the luxury of a doorman to retrieve their packages, but many are greeted by the dreaded "missed package delivery" slip. Or worse yet, the package is just left on the doorstep.

Enter the growing number of virtual doorman apps — services acting as middlemen between the big shipping companies such as FedEx and UPS and the front door.

Zander Adell, founder and CEO of San Francisco-based startup Doorman, told CNBC on Monday: "We're different because we deliver within a two-hour window, when you're actually home," from 6 p.m. until midnight, seven days a week.

Read MoreLast-minute delivery: FedEx, UPS gear up for rush

A package delivery from a San Francisco-based start-up called Doorman.
Source: Dooman
A package delivery from a San Francisco-based start-up called Doorman.

Customers of the service use the Doorman warehouse as their destination for packages instead of their home addresses.

Currently, Doorman only operates in the San Francisco area, but it's looking to expand.

"Once Christmas is behind us and we've survived the flood, we'll see what other markets we'll tap into," noted Adell in a "Squawk Box" interview. "We need to perfect our model before we can duplicate it."

A similar company called Parcel aims to help doorman-less New Yorkers.

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