Your Ultimate 2025 Guide to Flex Office Options in Sofia, Bulgaria

Flex offices are becoming increasingly popular options for companies operating in Sofia, Bulgaria. From small tech startups to multinational enterprises, an increasing number of businesses are recognising the benefits of flexible workspaces, including enhanced productivity, cost savings, and streamlined operations. In this guide, we will explore everything you need to know if you are looking for a flex office in Sofia, including the different types of flexible workspaces, how much a desk in a flexible workspace costs, and the best flex office options for tech companies and startups in Sofia.

What is a flex office, and why is it so popular? 

A flex office (also known as a flexible workspace or coworking space) is a modern office setup designed to adapt to the changing needs of individuals and businesses, granting them more control over their workspace and operational costs. Flexible workspaces, such as coworking spaces, allow members to choose flexible and short-term office leases, scale up or down easily, access communal facilities, and work in vibrant, collaborative environments. It also grants employees the freedom to choose where, when, and how they want to work, based on what they need to do at the moment.

The flex office model is growing increasingly popular among startups, freelancers, remote teams, and hybrid workers who value agility, scalability, and cost-efficiency. With the rise of hybrid work models and increasing demand for workplace freedom, flexible workspaces have become a key solution for modern professionals seeking a productive, cost-effective alternative to traditional offices.

Providers like Campus X in Sofia offer a mix of hot desks, dedicated desks, and private offices under one roof—making them ideal for businesses seeking both structure and flexibility.

Difference between fixed and flex office models

A fixed office model typically involves permanent infrastructure, assigned desks, and limited adaptability. It often requires high upfront investment and long-term contracts, making it less suitable for rapidly evolving businesses or distributed teams.

Unlike traditional, fixed office models—where companies sign long-term leases and commit to static layouts—a flexible workspace offers short-term lease options and on-demand access to desks, private offices, meeting rooms, shared amenities, and collaborative areas. 

Types of flexible office workspaces you can take advantage of

Flexible office workspaces come in all shapes and sizes - from coworking spaces and private offices to adaptable workstations and virtual offices. That way, they allow professionals and businesses to choose the setups that best match their work style, team size, and budget. Whether a freelancer needs a desk for a day, a startup team seeks a couple of dedicated desks, or a multinational enterprise is looking for a private office in a dynamic and creative environment, flex office providers like Campus X offer scalable options. Below are the most common types of flex office workspace options:

Hot desks

Hot desking allows members to use any available desk within a shared coworking area on a first-come, first-served basis. It’s ideal for freelancers, digital nomads, and remote workers who don’t require a fixed spot but still want access to high-speed internet, communal amenities, and networking opportunities. Hot desks offer maximum flexibility at a minimal cost.

Dedicated desks

A dedicated desk is a reserved workstation in a shared office space (e.g., a coworking space) assigned exclusively to one person. It offers more consistency than hot desking as members can leave their equipment or personal items overnight. Think of it as your small, perfect island among an ocean of other creative professionals working and collaborating within the same room.

Dedicated desks are ideal for professionals seeking routine and reliability without the overhead of a private office.

Private offices

Private offices in coworking spaces provide a secure, enclosed environment for individuals or teams. They combine the benefits of coworking (e.g., shared amenities, a big community, and lower costs) with the privacy of a traditional office. Private office spaces are ideal options for startups, remote teams, or businesses that need a quiet and private space.

On-demand meeting rooms

These rentable rooms are available by the hour or day and come equipped with essentials like whiteboards, screens, and video conferencing tools. On-demand meeting rooms are ideal for hosting client meetings, interviews, or team strategy sessions without the commitment of a permanent space. They can also be arranged to accommodate the needs of various meeting types and layouts.

At Campus X, you can also find the MEAVO Office Phone Booths. Made from over 800 recycled plastic bottles each, these environmentally conscious phone booths provide our members with private spaces to make calls or work in quiet while at the same time aligning with our commitment to supporting sustainable office solutions.

Virtual offices

A virtual office provides a professional business address and legal presence, mail handling, optional receptionist and other services without the need for a physical desk. This is a smart solution for remote businesses, startups, or international companies seeking to establish a presence in a city like Sofia without the need for full-time office space.

Why are multinational companies, freelancers, startup teams, and remote workers choosing flex offices?

• For freelancers: Flex office spaces are a cost-conscious choice that grants freedom, flexibility, and easy access to a professional environment with lots of networking opportunities.

• For small teams (10 - 50 employees): Flex offices are the best and least expensive option to ensure your own, fully-serviced office space, providing the opportunity to scale as you grow.

• For big teams (50 - 100 employees): Flex offices are the perfect solution for hybrid teams that don't need a desk for everyone, every day, but instead prefer a comfortable, private space for half the team with everything included and no unnecessary costs.   

• For multinational companies: A private flex office allows for quick and effective entry into the Bulgarian market, providing everything needed, including an address, local support, and access to a curated tech-industry community.

The benefits of choosing a flex office 

The demand for flex office spaces has surged in recent years, driven by the shift toward hybrid work, economic uncertainty, and changing professional expectations. From remote-first freelancers to cost-conscious startups and even multinational enterprises, an increasing number of people are opting for flex offices as a more cost-effective alternative to traditional office leases. Here’s why flexible workspaces are becoming the go-to solution across industries and team sizes.

Post-pandemic office needs and the rise of hybrid and remote work

COVID-19 reshaped how people work. Many businesses downsized or abandoned their fixed offices entirely, opting instead for agile, scalable workspace solutions. Flex offices allow teams to meet in person as needed without being tied to a long-term contract or underutilised office space.

Since hybrid teams thrive in flexible environments, options like hot desks, on-demand meeting rooms, and private offices, typical for flexible workspaces, have proven an effective way to support seamless collaboration between remote and in-person staff. 

Learn what makes flex office spaces the perfect choice for hybrid work in our dedicated guide.

More competitive and transparent pricing

Compared to traditional commercial leases, flexible offices are more budget-friendly. The reason is that businesses can choose from daily, weekly, or monthly pricing models, giving them predictable costs and minimal upfront investment.

Flex office workspaces also eliminate the hidden costs associated with traditional offices (e.g., furniture, utilities, maintenance, administrative staff, etc.), and all expenses are included in the fee, enabling individuals and companies to budget more accurately. Furthermore, regardless of whether you're a solo consultant or a startup scaling rapidly, flex offices allow you to pay only for what you need when you need it.

Better flexibility, lease length and exit terms

Flex office providers typically offer short-term contracts with low or no exit penalties. This appeals to startups, freelancers, and project-based teams that seek to quickly adjust their workspace needs without incurring long-term risks.

Unlike traditional offices, the flex office alternatives can adapt to changing needs and work styles. They enable companies to scale as they grow, offering the ideal solution at every stage of their journey.  

Facilities and add-ons

Modern flexible offices come with premium amenities, including high-speed internet, printing services, event venues, phone booths, stocked kitchens, or even podcast studios (as in the case of Campus X). These facilities boost productivity, add convenience, and enable a more welcoming and inspiring work environment without increasing overhead costs.

Access to a carefully curated community and networking opportunities

Many choose flex offices not just for the space but for the built-in community. Coworking environments connect individuals from diverse backgrounds and industries, fostering collaboration, idea-sharing, and valuable networking. This is especially helpful for freelancers and early-stage founders seeking to expand their businesses.

How much do flex office services in Sofia cost in 2025?

Depending on the coworking space, a hot desk in Sofia can cost between €150 and €250 per month, excluding VAT, while the price for a dedicated desk in 2025 can exceed €300 per month, excluding VAT. 

Campus X aims to offer some of the most competitive prices for flex office options in Sofia. As a result, the monthly costs (excl. VAT) of different flex office options start at:

• €199 for a desk in a move-in-ready and customizable private office

• €180 for a dedicated desk in a coworking space

• €35 administrative tax + €11/day when you use a hot desk

• €49 to €119 for a virtual office service

Examples of Bulgarian startups and multinational companies that have chosen a flex office in Sofia

Campus X’s flex office options have been the go-to choice for leading Bulgarian and multinational companies that are operating from Sofia, including:

• Eleven Ventures - one of the leading early-stage VCs in Bulgaria and the SEE region

• Americaneagle.com - a top global web design, development, and digital marketing agency with 700+ employees in 12 locations across the world

• Bunq - a Dutch fintech and neobank operating within 30 European countries

• Cognizant - a US tech giant with over $37 billion market cap and more than 330,000 employees worldwide

• Dronamics - the company behind the world's first cargo drone fleet

• OfficeRnD - one of the leading software solutions that power flexible working globally 

• Storytel - among the world’s largest audiobook and e-book streaming services, present in more than 25 markets, offering over 1.5 million titles

The best flex office options for tech companies and startups in Sofia

While there are over 30 coworking spaces in Sofia, not all are created equal. When choosing a flex office provider, consider factors such as pricing, location, service offerings, community specifics, add-ons, and more.

Campus X, for example, has emerged as the premier coworking space and flex office provider for tech industry companies, including both small startup teams and multinational enterprises. The private office offerings at Campus X are ideal choices for teams of 8 to 100+ people. However, we are also the headquarters for the businesses of lots of inspiring individuals, digital nomads, and freelancers.

Nestled in Sofia’s top business district and with an easily accessible location (surrounded by stops for seven bus lines and three metro stations), we are ready to welcome new additions to our vibrant community.  

Try out our flex office options with a free trial.