Journal · 1 min read
Condo Renovation Cost: Systems vs Finishes
Know whether money goes behind the wall or on show before you budget a reno.
2026-04-06
Condo renovation cost in Bangkok splits into system works and finishes. Light cosmetic updates run about 3,000 to 6,000 baht per square meter, standard renovations with new bathroom, kitchen, and built-ins about 8,000 to 15,000, and full gut renovations that move walls and services 15,000 to 25,000 baht per square meter or more.
System works: behind the walls
System works are the parts you do not see but cannot skimp on: electrical rewiring, plumbing, waterproofing in wet areas, and air-conditioning. In condos, these must respect the building's rules and risers, and waterproofing failures are the most expensive mistakes to fix. Budget generously here even though it is invisible.
- Electrical rewiring and new circuits
- Plumbing and drainage changes
- Waterproofing in bathrooms and kitchen
- Air-conditioning relocation or upgrade
Finishes: what you see
Finishes are the visible layer: flooring, wall treatments, paint, built-in carpentry, kitchen and bathroom fittings, and lighting. This is where taste and budget meet, and where costs swing most with material choice. A smart split spends firmly on hidden systems, then chooses finishes by how much each room is seen and used.
Condo-specific costs to plan for
Condos add costs a house does not. Expect juristic-person approval, renovation deposits, restricted work hours, lift bookings, and rules on debris removal and wet-work. Older buildings may need extra electrical capacity. Factor these in early, since they affect both budget and how long the renovation takes.
How much does it cost to renovate a condo in Bangkok?
Indicatively, 3,000 to 6,000 baht per square meter for light cosmetic work, 8,000 to 15,000 for a standard reno with new bathroom, kitchen, and built-ins, and 15,000 to 25,000 or more for a full gut. Building rules and material level shift the total.
Where should I not cut costs in a condo renovation?
Never skimp on waterproofing, electrical work, and plumbing. These are hidden, hard to redo, and failures can damage your unit and the neighbors below, leading to disputes and costly repairs. Save on finishes and decor instead, where changes are cheap and reversible.