Condo Bathroom Renovation in Bangkok: A No-Nonsense Guide (2026)

A condo bathroom renovation is a different job from a house bathroom. The juristic office has to approve everything before work starts. Neighbors complain about noise. Working hours are restricted, and every bag of cement comes up the service elevator. The plan below covers each step in order.

Step 1. Get juristic approval first

Nothing happens until the building's juristic office signs off in writing. Skip this and they shut the project down, keep your deposit, and you start over. Approval usually takes 3 to 7 business days. The paperwork they want:

• A renovation floor plan that shows what is changing
• A list of materials
• The contractor's name, ID copy, and business registration
• A refundable deposit, usually ฿10,000 to ฿30,000 depending on the building

HandyMango generates the juristic permit document automatically. You print the pre-filled PDF and submit it.

Step 2. Plan before you demolish

Sounds obvious. People still swing sledgehammers before picking the tile. Decide these things first:

• Space. Most Bangkok condo bathrooms are 3 to 8 sqm. Measure exactly. "About four meters" is not enough.
• Style. Minimalist, modern industrial, Japandi, whatever it is. Pick a direction so the material choices follow.
• Materials. Porcelain or ceramic, COTTO or Toto, rain shower or handheld. These choices drive about 60 percent of the total cost.

Step 3. Pick a contractor you can trust

This is where most condo renovations go wrong. The cheapest quote is rarely the best value. A good contractor:

• Has a portfolio of bathroom-specific work. Building a house and tiling a 4 sqm condo bathroom are different skills.
• Provides real customer references you can call.
• Accepts milestone-based payments with daily photo updates. If they want 70 percent upfront, walk away.

Budget overview

Level	Cost	What you get
Budget	฿80,000 to ฿120,000	New tiles and fixtures, same layout
Standard	฿120,000 to ฿200,000	Full renovation with quality materials
Premium	฿200,000+	Imported fixtures, custom design

Numbers assume a 4 to 6 sqm condo bathroom. Larger bathrooms or buildings with high renovation deposits push the figures up.

Realistic timeline

A typical 4 to 6 sqm condo bathroom takes 10 to 14 working days of construction. Working days, not calendar days. With most condos limiting work to Monday through Friday, 9 AM to 5 PM, that is 2 to 3 calendar weeks. Larger or more complicated jobs run 14 to 21 working days.

Add another 1 to 2 weeks at the start for juristic approval and material ordering. From decision to first hot shower, the realistic span is about a month.

---

Want to know what your specific bathroom will cost? HandyMango's AI builds a scope and estimate from photos of your real space, not a generic range.

Plan your condo renovation