SpaceAdd

What SpaceAdd does

SpaceAdd (스페이스애드), founded in December 2017 and headquartered in Gangnam-gu, Seoul, is a private South Korean company that operates the country's largest specialized digital out-of-home (DOOH) advertising network focused on premium office buildings. Its flagship product, Prime Office Media, consists of custom high-specification digital screens installed in common areas (elevators and lobbies) of 900+ premium buildings across Seoul's key business districts — including Gangnam, Yeouido, Pangyo, Jongno, Yongsan, Sangam/DMC, and Bundang — with 5,500 total media devices reaching approximately 3 million daily viewers. The company also operates or represents media across shared offices (WeWork, Fast Five), premium residential apartments (Prime Living, TOWNBOARD), subway lines (Shinbundang, Sillim), KT Bus Shelter, Gwanghwamun KT-SQUARE, N Seoul Tower, KBO baseball stadiums, fitness centers, and entertainment attractions, building a portfolio it markets under the OOH REP. agency banner.

The underlying technology stack centers on a proprietary content scheduling system that maintains a 5:5 ratio of curated content (art, information, healing, building showcases, cultural benefits from partners including International Gallery and artist Na Kim) to commercial advertising, with each device running approximately 80+ broadcasts per day on a 10-minute cycle. SpaceAdd generates revenue through three streams: (1) sale of advertising slots on the Prime Office network, priced at KRW 200,000–300,000 per building per month per slot or KRW 18 million per slot per month at the full-package level; (2) managed services for space development, media installation, content curation, and ongoing operations for building owners; and (3) content partnerships/licensing with art galleries and cultural institutions. Inventory is sold across multiple structured packages — Basic (full/half/quarter), Geographic (GBD, CBD, YBD, BBD, SBD, DMC, G-valley with documented daily impression counts), TPO (Medical, Luxury, Tech Hub, Public, Knowledge Industry, Convenience, Style Office), and Efficiency (Movie/Performance, Public, Short-term Focus).

The go-to-market is a direct B2B sales motion targeting two customer groups: enterprise brand advertisers and advertising agencies (inquiry-driven, consultation-led, proposal-to-installation sales cycle) and office building owners/property managers (site survey, proposal, contract, installation, operations). SpaceAdd reports 70% of Korea's top 50 KOSPI-listed companies among its building tenants, a 100% advertiser renewal rate, and post-viewing behavior metrics (88% search, 73.6% information share, 50.9% purchase) that anchor a premium CPM positioning aimed at luxury, medical, tech, and government advertisers seeking access to high-income (KRW 3M+/month average) Seoul office workers. The company is venture-backed (Series A 2019, Series B 2021, Series C 2023 totaling ~$10M USD from Altos Ventures, Ark Impact, and Hanwha Investment & Securities) at a post-money valuation of approximately KRW 80 billion (~$60M USD) and was selected as a Pre-ICON company by the Korea Credit Guarantee Fund in 2024.

Name

SpaceAdd

Legal name

(주)스페이스애드

Website

https://spaceadd.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

SpaceAdd operates Korea's largest specialized office digital out-of-home advertising network, running 5,500 screens across 900+ Seoul premium buildings to deliver targeted campaigns reaching 3 million daily high-income office workers, complemented by residential, transit, and lifestyle media assets.

Ownership category

akta.pro rank

Product category

Digital Out-of-Home Advertising

NAICS

Media Buying Agencies (54183), Media Buying Agencies (541830), Indoor and Outdoor Display Advertising (54185), Indoor and Outdoor Display Advertising (541850), Advertising Agencies (541810)

SIC

Services-Advertising Agencies (7311)

akta.pro primary industry

Digital Out-of-Home (DOOH) Screens & Networks (BPAFALAB)

akta.pro secondary industries

Digital Out-of-Home (DOOH) Advertising (MPAAAKAB), Place-Based / Retail & Venue Media (Malls, Gyms, Cinema, Office Buildings) (BPAFALAE), Out-of-Home (OOH), DOOH & Ambient Advertising (BPAFAAAI)

Keywords

• Digital out-of-home advertising
• Office media network
• DOOH advertising
• Space media solutions
• Digital signage network

Headquarters

HQ city

Seoul

HQ country

South Korea

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Infrastructure, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. 디지털 옥외광고 (Digital Out-of-Home Advertising): Sale of advertising slots on the Prime Office Media network. Sold as packages based on number of buildings, geographic zones, or target audience segments (TPO packages). Pricing per unit ranges from KRW 200,000 to KRW 300,000 per building per month per slot. The media operates on a 5:5 content-to-advertising ratio, so advertising inventory is limited and premium.
2. 공간 개발 및 미디어 운영 (Space Development & Media Operations): Development and management of media installations in office buildings, including building analysis, media installation, content partnership, and ongoing operations and maintenance. Revenue generated from both new space development and recurring media management.
3. 콘텐츠 제휴 (Content Partnerships): Partnerships with art galleries (international galleries), culture institutions, and information providers for exclusive content on the media network. Content types include art, information, healing/wellness, building showcases, and cultural benefits.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

SpaceAdd operates a digital out-of-home (DOOH) advertising network by installing custom high-specification digital screens in office building common areas (elevators, lobbies) and other premium venues across Seoul, South Korea. The company sells advertising slots on its Prime Office Media network—spanning 900+ buildings and 5,500 devices reaching 3 million daily viewers—using a 5:5 content-to-advertising ratio, and provides one-stop advertising and space development services including media planning, installation, content scheduling, and performance reporting.

Product overview

SpaceAdd operates as an office and space media platform, providing a portfolio of digital media solutions across multiple venue types. The core product is Prime Office Media (프라임오피스 미디어), with complementary offerings including Shared Office Media (공유오피스), Prime Living Media (프라임리빙), Apartment Media, Subway Media, Bus Shelter Media, and various lifestyle/entertainment venue media (sports, attractions, fitness). The company offers advertising solutions (campaign planning, content management, performance analysis) and space solutions (media development, installation, content scheduling). The portfolio covers office buildings (900+ buildings, 5,500 devices), residential spaces, transit locations, and lifestyle venues, serving approximately 3 million daily viewers.

Differentiator

Problem solved

Functional benefit

Products and services

• Prime Office Media (프라임오피스 미디어) Digital media devices installed in premium office buildings (elevators, lobbies) across Seoul's key business districts (Gangnam, Yeouido, Pangyo, Gwanghwamun). Operates with 5:5 content-to-advertising ratio across 900+ buildings and 5,500 devices, reaching approximately 3 million daily viewers. Targets high-income office workers.
• Shared Office Media (공유오피스 미디어) Digital media network installed in co-working spaces including WeWork and Fast Five locations, targeting startup employees and young professionals.
• Prime Living Media (프라임리빙 미디어) Digital media installed in premium residential building common areas (lobby, elevator interiors, waiting areas) in Gangnam, Yeouido, Yongsan, and Seongsu areas targeting high-income residents.
• Apartment Media / TOWNBOARD (아파트미디어) Media network for apartment complexes targeting residents in residential buildings.
• Subway Media (지하철미디어) Digital media in subway stations including Shinbundang Line and Sillim Line official agency partnerships.
• Bus Shelter Media (버스쉘터) Digital media at bus shelters, including KT Bus Shelter official agency partnership.
• Sports Media (스포츠) Sports venue media including KBO baseball stadium sponsorship agency and AssistFit fitness media partnerships.
• Attraction Media (어트랙션) Entertainment and attraction venue media including Bounce Trampoline Park and Champion arena.
• Daily-Log Media (취미/일상) Lifestyle media targeting daily life interests of office workers with content about hobbies and everyday life.
• Photoism Media (포토이즘 미디어) Photo booth kiosk display media network, officially represented by SpaceAdd.
• N Seoul Tower Media Representation (N서울타워 공식 대행) N Seoul Tower official representation - premium tourist landmark media.
• Gwanghwamun KT-SQUARE Media Representation (광화문 KT-SQUARE 공식 대행) Gwanghwamun KT-SQUARE official media representation.
• Advertising Solutions (광고 솔루션) One-stop advertising solution including brand analysis, media campaign planning, promotion experience enhancement, space media execution, and performance analysis reporting.
• Space Solutions (공간 솔루션) Space analysis and media development, media installation and management, affiliate content development, building-customized content scheduling, and media maintenance.

Quantifiable outcome

• 88% of viewers who see an advertisement perform a subsequent search experience
• +5 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered minor and core.

• 11번가 (11st)minorStrategic or Co-development Partner · 1 January 2024Partnership with 11th Street (11번가) for pet protection campaign (유기견 보호 캠페인). Social cause marketing partnership.
• N Seoul Tower (N서울타워)minorStrategic or Co-development Partner · 1 January 2023Official media representation for N Seoul Tower (N서울타워 공식 대행).
• KT (케이티)coreStrategic or Co-development Partner · 1 January 2022Official agent for KT Bus Shelter media and KT-SQUARE (광화문 KT-SQUARE 공식 대행). SpaceAdd handles sales and operations of KT's outdoor media assets.
• Seoul Metro / Shinbundang Line (신분당선)minorStrategic or Co-development Partner · 1 January 2022Official agent for Shinbundang Line and Shinlim Line subway media (신분당선/신림선 공식 대행).
• Photoism (포토이즘)minorStrategic or Co-development Partner · 1 January 2022Official media representation for Photoism media (포토이즘 미디어 공식 대행).
• KBO (한국야구기구)coreStrategic or Co-development Partner · 1 January 2022Official agency for KBO baseball stadium sponsorship (KBO 야구장 스폰서십 공식 대행). SpaceAdd handles KBO stadium media sales and operations.
• WeWork Korea (위워크)minorStrategic or Co-development Partner · 1 January 2021WeWork shared office media launch partnership. SpaceAdd installed media devices in WeWork co-working spaces in Korea.
• Fast Five (패스트파이브)minorStrategic or Co-development Partner · 1 January 2019Launched shared office media in Fast Five co-working spaces (패스트파이브 공유오피스 미디어 론칭).
• International Gallery (국제갤러리)minorStrategic or Co-development Partner · 1 January 2018Content partnership with International Gallery for art content on SpaceAdd's media network. Featured in content portfolio.
• Na KimminorStrategic or Co-development Partner · 1 January 2018Content partnership with artist Na Kim for art content displayed on SpaceAdd's media network.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Focus Media: China's largest office building elevator/lobby DOOH advertising network — operates screens in Grade-A office towers reaching white-collar professionals. Closest global analog to SpaceAdd's Prime Office Media model, with similar demographic targeting and content/advertising mix.
• Loop Media: US-based DOOH network operator focused on place-based screens in restaurants, fitness, and retail venues with curated content/advertising mix. Comparable business model to SpaceAdd's lifestyle and venue media segments.

Broad incumbents

• JCDecaux: Global OOH leader operating street furniture, transit, and place-based media across 80+ countries. Comparable in DOOH format and advertiser relationships; overlaps with SpaceAdd in transit (bus shelter) and venue media but operates at vastly larger scale.
• Clear Channel Outdoor: One of the largest global OOH operators with extensive billboard, transit, and airport portfolios. Overlaps with SpaceAdd's DOOH and transit media but at incumbent scale, primarily outside Korea.
• Ströer: German digital OOH and out-of-home media company with strong presence in public video screens, transit, and place-based formats. Comparable in DOOH operating model and digital network focus.
• OUTFRONT Media: US-based OOH operator focused on transit, billboard, and place-based digital media. Comparable in DOOH operating model and advertiser base, primarily North American footprint.
• Vivid Group / Pattison Outdoor: Canadian OOH operator with transit, billboard, and place-based digital networks. Comparable in operating DOOH networks in major urban centers; larger scale, geographic overlap only indirect.

Emerging players

• Place Exchange: Programmatic DOOH SSP enabling automated buying of out-of-home inventory across multiple networks. Not a direct competitor but a key channel partner/disruptor that SpaceAdd's inventory could eventually flow through.

Regional players

• Bikmocha / IGLOO Corporation: Korean digital signage and DOOH operator with presence in retail and transit environments. Comparable in regional (Korean) DOOH operations and advertiser base but serves different venue mix.

Others

• VIOOH: Programmatic OOH marketplace joint venture between JCDecaux and other OOH operators. Adjacent enabling technology that increasingly mediates how DOOH inventory like SpaceAdd's is bought and sold.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@spaceadd
• Instagraminstagram.com/spaceadd_kr
• Facebookfacebook.com/spaceaddkorea
• LinkedInlinkedin.com/company/spaceadd

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds3 records

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SpaceAdd