Top 10 Korean Apartment Floorplans Compared: Studio to Family 4-Bay Styling (2026)

Last updated: May 2026

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Rank	Floorplan	Sqm	Best Style	Verdict
1	5-Pyeong Officetel Studio (원룸)	16.5 sqm	Vertical minimal	Best for singles under 30
2	10-Pyeong One-Bedroom (1.5룸)	33.1 sqm	Soft warm minimal	Best first-apartment upgrade
3	15-Pyeong Two-Bedroom (투룸)	49.6 sqm	Japandi mix	Best for couples
4	20-Pyeong Three-Bedroom (소형)	66.1 sqm	Modern natural	Best newlywed starter
5	25-Pyeong Three-Bedroom (중형)	82.6 sqm	Warm minimal	Best small-family fit
6	30-Pyeong Three-Bedroom (대형)	99.2 sqm	Hannam-dong moody	Best mid-family flexibility
7	33-Pyeong 4-Bay (4베이)	109.1 sqm	Bright warm minimal	Best family layout overall
8	Duplex Penthouse (복층)	99–165 sqm	Sculptural luxury	Best for ceiling drama
9	Hanok-Inspired Renovation (한옥)	varies	Modern hanok	Best for craft-led owners
10	Apartment Plus Terrace (탑층)	+10–30 sqm outdoor	Cafe-garden moody	Best indoor-outdoor flow

I have measured Korean apartments for eight years. Clients always start at the same place: "What size do I actually need?"

Korean buyers think in pyeong (평), a unit officially banned in 2007 but still used in every listing (Pyeong, Wikipedia, 2025). One pyeong is 3.305785 sqm; most Koreans round to 3.3.

Two numbers matter on every listing. Exclusive area (전용면적) is what sits inside your front door; supply area (공급면적) adds your share of hallways and elevators (IBS Housing Measurements, 2025). The 33-pyeong sticker on a sign is usually supply, so real living space lands closer to 84 sqm.

This list breaks down 10 floorplans actually being lived in across Seoul in 2026.

1. 5-Pyeong Officetel Studio (원룸) — Officetel Singles (Verdict: Best for vertical storage maximization)

The default Seoul one-room (wollum 원룸) for 20-something single-household renters. Officetel buildings stack hundreds of these around Gangnam, Yeoksam, and the university districts (Officetels, Namuwiki, 2025).

The unit runs 5 pyeong (16.5 sqm) on average — bed, kitchenette, bath, all in one room. Seoul one-rooms typically run between 4.5 and 7 pyeong (Hanmadi Korean Linguistics, 2024).

Styling logic is vertical. Wall-mounted desk fold-downs from Iloom plus a loft bed clears 4 sqm of floor.

Cabinet tops should hit the ceiling — never stop short, that gap collects dust (Hometown Realty Layouts, 2025).

Best style fit is vertical minimal: two beiges, one black, one wood.

Full renovation runs ₩6M–₩15M (~$4,380–$10,950) at ₩1.2M–₩3M per pyeong (Lifebase Renovation Costs, 2026). See our Korean tiny studio 6-9 pyeong floor plan guide.

2. 10-Pyeong One-Bedroom (1.5룸) — Bedroom Carved Off (Verdict: Best first-apartment upgrade)

The Korean 1.5-room (il-jeom-o-room 1.5룸) splits the sleeping area off the living-kitchen zone with a half-wall or sliding door. Around 33.1 sqm; the first-rung upgrade past a studio.

Typical occupant is a couple in their late 20s, or a single who works from home and needs a bedroom that closes.

Furniture stays small. A 1400mm sofa beats a 2000mm — the Iloom Penny 2-seat fits this room cleanly (Ohouse Hometours, 2026).

Best style fit is soft warm minimal — oak, cream linen, brass hardware. Full renovation runs ₩12M–₩30M (~$8,760–$21,900). For first-apartment styling, see our Korean self-interior 1M KRW budget guide.

3. 15-Pyeong Two-Bedroom (투룸) — Couples Cap Size (Verdict: Best for couples)

The two-room (tu-room 투룸) at 15 pyeong (49.6 sqm) is the standard pre-kids couple apartment. Two bedrooms, one living-kitchen open plan, one bath.

The second bedroom usually becomes a home office or dressing room. Korean closet systems fit the smaller bedroom dimensions cleanly (Ohou blog loft tour, 2026).

Common move is to skip a separate dining table — counter-height bar at the kitchen end, sofa perpendicular to a media wall. Two zones share 30 sqm without feeling cramped.

Best style fit is Japandi — Korean warmth plus Japanese discipline. Full renovation runs ₩18M–₩45M (~$13,140–$32,850). See our Korean Japandi style fusion guide.

4. 20-Pyeong Three-Bedroom (소형) — Compact Family Starter (Verdict: Best newlywed starter)

The 20-pyeong three-bedroom (so-hyeong 소형) at 66.1 sqm is the cap on the small-apartment category. Three bedrooms but tight ones — the typical kid's room runs under 9 sqm.

Costs run ₩8M–₩40M depending on grade (AJD Remodeling, 2025).

The trick is built-ins. Hanssem Refit packages start around ₩6M ($4,380) and bake wardrobes into wall recesses; IKEA Pax systems are the cheaper substitute.

Best style fit is modern natural — light oak veneer, calm palette, matte black hardware. See our Korean self-interior renovation cost guide.

5. 25-Pyeong Three-Bedroom (중형) — Family of Three Sweet Spot (Verdict: Best small-family fit)

The 25-pyeong three-bedroom (jung-hyeong 중형) at 82.6 sqm is what most young Seoul families with one kid actually live in. Two bedrooms plus a small one for the child.

Living-dining-kitchen typically opens onto one front balcony. Korean balconies (베란다) come pre-glazed and serve as laundry, drying, and storage (Korea Pyeong Guide, 2026).

The styling move: convert one balcony into a reading nook. Buyers spec a built-in sliding-door wardrobe from Hanssem or Livart across the bedroom long wall; Modernhouse runs the budget alternative.

Best style fit is warm minimal — five beige tones, oak shelving, brass accents. Renovation runs ₩30M–₩55M (~$21,900–$40,150). See our Korean rooftop and balcony interior guide.

6. 30-Pyeong Three-Bedroom (대형) — Mid-Family Flexibility (Verdict: Best mid-family flexibility)

The 30-pyeong three-bedroom (dae-hyeong 대형) at 99.2 sqm is the upgrade family target. Larger master bedroom, two reasonably sized kid rooms, a real dining area.

Most 30-pyeong floorplans in 2026 still come as 3-bay (3베이) — three rooms facing the front balcony, hallway running down one side.

The looser size lets you commit to a moodier palette. Hannam-dong stylists lean into warm grays, oxblood accents, and brass — colors that would crush a 20-pyeong unit.

Best style fit is Hannam-dong moody. Renovation runs ₩50M–₩90M (~$36,500–$65,700) per Seoul construction averages of ₩8.42M per pyeong (Seoul Land, 2026).

See our Hannam-dong vs Seongsu breakdown.

7. 33-Pyeong 4-Bay (4베이) — Korea's Family Default (Verdict: Best family layout overall)

The 33-pyeong 4-bay (sa-bei 4베이) at 109.1 sqm is the dominant new-build layout in Korea. Three bedrooms plus living room all face the front balcony in a single line (Plus Blog Bay Structures, 2025).

The 4-bay's biggest win is light — every primary room gets direct sun, with cross-ventilation through front and back windows.

The tradeoff is narrower rooms and a long hallway. The entry can read dark since bedrooms claim the windows.

Best style fit is bright warm minimal — oak floors, white walls, a single accent wood tone. Renovation runs ₩60M–₩95M (~$43,800–$69,350). See our top 10 Korean furniture brands comparison.

8. Duplex Penthouse (복층) — Vertical Drama (Verdict: Best for ceiling drama)

The Korean duplex (bokcheung 복층) splits living space across two levels inside one unit. Usually found in officetel top floors where extra ceiling height enables a mezzanine sleeping loft (SeoulHomes Layout Guide, 2026).

Footprint ranges 99–165 sqm. Common spec is downstairs living-kitchen-bath, upstairs sleeping area.

Styling logic flips at this scale. The double-height wall becomes the design event; pendants hung at 4m become sculpture.

Best style fit is sculptural luxury — high ceiling, low furniture, statement lighting. Renovation runs ₩90M–₩200M+ (~$65,700–$146,000+). See our Korean lighting brands guide.

9. Hanok-Inspired Renovation (한옥) — Tradition Into Apartment (Verdict: Best for craft-led owners)

The hanok-inspired (han-ok 한옥) renovation pulls traditional Korean elements — wood beams, hanji (한지) paper, sliding doors, low seating — into a modern apartment shell.

The Bukchon contemporary hanok work by Teo Yang Studio set the 2026 reference (Wallpaper, 2025). Modern hanok blurs interior and exterior with large windows (CNN Hanok Style, 2024).

Apartment-hanok renovations sub raw oak for traditional pine; hanji lamp shades replace pendants and a low platform with floor cushions replaces the sofa.

Best style fit is modern hanok — natural materials, warm light, multifunctional rooms (Fine Home Contracting, 2024). Renovation runs ₩80M–₩250M (~$58,400–$182,500). The carpentry drives cost.

10. Apartment Plus Terrace (탑층) — Top-Floor Indoor-Outdoor (Verdict: Best indoor-outdoor flow)

The top-floor apartment with private terrace (tap-cheung 탑층) gives you the indoor unit plus 10–30 sqm of outdoor deck on the roof — the Korean answer to a backyard.

Korean stylists treat the terrace as a cafe set: outdoor sofa, low table, planters with herbs and dwarf maples, string lights, awning for the summer monsoon.

The indoor unit stays bright with no upstairs neighbor. Heating costs run higher in winter though — budget for thicker windows.

Best style fit is cafe-garden moody. Renovation runs ₩60M–₩120M (~$43,800–$87,600), plus ₩5M–₩20M for deck flooring and planters. See our Korean rooftop oktapbang guide.

Frequently Asked Questions

Q: How big is one pyeong in feet? A: One pyeong is 3.305785 sqm or 35.58 square feet (Pyeong Wikipedia, 2025). A 33-pyeong apartment is roughly 109 sqm or 1,175 sqft. Check whether the listing quotes exclusive area (전용면적, actual living space) or supply area (공급면적, living plus shared) — exclusive is typically 70–80% of supply.

Q: What is the difference between 3-bay and 4-bay floorplans? A: A 3-bay (3베이) has three rooms facing the front balcony, typically living room plus two bedrooms. A 4-bay (4베이) has four rooms in a line, usually living room plus three bedrooms (Plus Blog Bay Structures, 2025). The 4-bay maximizes natural light. Most new-build 33-pyeong apartments in 2026 are 4-bay, with a tradeoff of narrower rooms and a longer hallway.

Q: How much does a Korean apartment renovation cost in 2026? A: Per-pyeong cost runs ₩1.2M–₩3M (~$876–$2,190), with general grade at ₩1.2M–₩1.5M, mid grade at ₩1.8M–₩2.2M, and high grade at ₩2.5M–₩3M (Lifebase, 2026). Seoul direct construction averages hit ₩8.42M per pyeong, over 12% year-on-year (Seoul Land, 2026). A 33-pyeong mid-grade renovation runs ₩60M–₩95M total.

Q: What is an officetel and how does it differ from an apartment? A: An officetel (오피스텔) combines office and residential use in one building (Officetels Namuwiki, 2025). Most are 5–10 pyeong studios for single-household workers, with built-in appliances. Apartments (아파트) are residential-only, usually 15+ pyeong, and the family default. Officetels are zoned commercial — which affects financing, taxes, and resale.

Q: How do I see real Korean apartment floorplans before renovating? A: Three Korean platforms cover this. Ohou.se hometours (집들이) lets you filter by sqm and layout (Ohouse Projects, 2026). 직방 (Zigbang) shows real estate listings with floorplans, and 두집 (Doozip) hosts renovation portfolios. For English-language Korean apartment tours, the Ohouse blog covers loft and apartment makeovers (Ohouse loft tour, 2026).

How We Sourced This Comparison

This list pulls from Seoul styling notes, Ohou.se hometour filters, and Korean contractor pricing verified May 2026. Use 1 pyeong = 3.305785 sqm and ₩1,370/USD.

Related Reading: See our Top 10 Korean Furniture & Decor Brands, Korean self-interior 1M KRW guide, and Korean vs American apartment floorplans.

-- The Self Interior Team