The idea for the new office, a kind of one-stop shop where new arrivals get advice on handling bureaucracy and settling in, is influenced by similar offerings in rival cities such as Copenhagen and Helsinki.
The party says it will be a "haven" where foreign new arrivals can receive guidance on getting a personal number and a bank account, on the housing market, language courses, schools and preschools, at the same time as getting help building a social network and tips on activities and events they can take part in.
The Social Democrats believe that Stockholm is in a "global race for talent", with every foreign researcher and highly skilled worker potentially bringing new jobs, patents and investments.
But the party says the current right-wing government at the national level has created a climate where such people are met with "unwelcoming attitudes, unclear rules and a lack of support".
"The idea with this is to target international talent and their dependents," Emilia Bjuggren, the Vice Mayor responsible for the labour market, told The Local.
"This is about making sure that people who choose to come to Stockholm to strengthen our competitiveness should also feel that this is a good place to live."
"We will gather both the support and guidance that is currently scattered in many places in one place, both physically and digitally," she added. "It's basically to help in both giving practical guidance but also on all the things that make life in Stockholm wonderful."
Stockholm already has a Welcome House which brings together services and guidance for foreigners who have come to Sweden as asylum seekers, but has so far lacked a similar entry point for highly skilled workers and their spouses.
The proposal is a joint election pledge from the Social Democrats in Stockholm City and Stockholm Region, and Bjuggren expects a pilot scheme to be up and running shortly after the election.
She said the party had chosen to launch the proposal during the election to underline the Social Democrats' commitment to Stockholm remaining an open, international city at a time when Moderates have ended their bar on forming a coalition with the far-right Sweden Democrats.
"We now see that the right-wing parties are on the same journey in Stockholm that they've been on nationally," she said. "And it is clear that in such a situation it becomes even more important for us to show that we – together with the vast majority of Stockholmers – want to be an international city, a city open to the outside world."