Bathroom renovation is a solution that transforms old, musty WC spaces into clean, modern, and more comfortable areas. This article by Duc Khoi provides detailed construction process guidelines, updated 2026 pricing, and the most beautiful design samples for homeowners’ reference. Let’s explore!
When Do You Need Bathroom Renovation?
Many families wonder whether they should renovate their bathroom or just do simple repairs. Below are signs that indicate you should do a complete renovation rather than temporary patching.
Deteriorated Electrical and Plumbing Systems
Leaking water supply and drainage pipes that emit unpleasant odors are serious warning signals. Faulty electrical systems with corroded switches and outlets not only cause inconvenience but also pose fire and electrical shock hazards threatening family safety. When these problems appear, replacing the entire water supply, drainage, and electrical systems is necessary instead of just doing spot bathroom repairs.
Walls and Floors with Water Seepage and Mold
Cracked, peeling, or yellowed tiles are consequences of poor-quality bathroom waterproofing. Water-damaged walls with spreading water stains and developing black mold not only ruin aesthetics but also affect health. This is when you need a complete renovation package to thoroughly address the problem from its root, including re-waterproofing the entire foundation and walls.
Damaged or Outdated Sanitary Equipment
Toilets that frequently clog with ineffective flushing, cracked washbasins, rusty and weak-flowing shower heads make daily activities uncomfortable. Sanitary equipment that has been in use for 10-15 years typically wastes water, no longer ensures hygiene, and replacement parts are hard to find.
Inconvenient Design Not Suitable for Current Needs
Small cramped spaces lacking natural light make bathrooms perpetually damp and stuffy. Many families want to separate dry and wet zones for more convenient use, or adjust door positions to align with bathroom feng shui principles.
5+ Important Notes You MUST KNOW Before Bathroom Renovation
For the bathroom construction process to proceed smoothly and achieve long-lasting quality, you need to understand these important notes before starting work.
Waterproofing
The bathroom waterproofing layer determines 70% of the project’s lifespan. You need to thoroughly treat three key positions: the entire bathroom floor, wall bases at least 30cm high, and especially the drain pipe collars – the most leak-prone areas. Use specialized waterproofing materials such as bitumen membrane, Sika, or polymer waterproof cement.
Ventilation and Lighting Systems
Bathrooms lacking ventilation are the main cause of mold, foul odors, and bacterial growth. If the space has natural windows, that’s best; otherwise, you must install an exhaust fan with appropriate capacity (minimum 15-20 air exchanges per hour). Bathroom design needs to calculate adequate lighting systems with switches and outlets placed in safe positions, away from water. Adequate lighting of about 200-300 lux helps make the space more open and easier to clean.
Choosing Safe and Durable Materials
Tile selection is a worthwhile investment in the bathroom renovation process. Floor tiles must have high slip resistance (R10 index or higher) to prevent slipping when wet, especially important for families with elderly and young children. Wall tiles should be glossy or semi-glossy for easy cleaning, water resistance, and reduced dirt adhesion. Avoid using excessively textured tiles on walls as they’re difficult to clean. Tile sizes of 30x60cm or 40x80cm provide fewer joints, reducing seepage risk and creating a more spacious feeling.
Standard Technical Floor Slope
A common mistake is making bathroom floors completely flat, leading to water pooling, poor drainage, and odors. The standard technical floor slope is 1-2% (meaning every 100cm length drops 1-2cm) toward the floor drain. The floor drain position should be at the lowest point, usually in the middle of the wet zone or against the wall. During construction, workers need to use a level to check the slope accurately, ensuring water flows quickly without pooling that causes slipping or odors.
Bathroom Feng Shui Elements Aligned with Destiny
The toilet should not face the main door directly, nor be aligned with the bed or altar. Bathroom mirrors are best placed on side walls, avoiding direct reflection toward the door. Regarding tile colors, you should choose according to the homeowner’s destiny: Wood destiny suits green and blue colors; Fire destiny suits red, orange, and pink; Earth destiny suits yellow and brown; Metal destiny suits white, gray, and silver; Water destiny suits black and deep blue. However, if you want a safe and easy-to-coordinate option, neutral tones like white, beige, and light gray are always suitable for all destinies and create a clean, spacious feeling.
Duc Khoi’s Latest 2026 Complete Bathroom Repair and Renovation Pricing Table
Below is the most detailed and comprehensive 2026 complete bathroom repair and renovation pricing table from us. We invite customers to review:
Demolition Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Demolish old wall tiles | m² | 50,000 – 80,000 | Including debris removal |
| 2 | Demolish old floor tiles | m² | 60,000 – 100,000 | Including debris removal |
| 3 | Demolish plasterboard/plastic ceiling | m² | 40,000 – 60,000 | |
| 4 | Remove old toilet | set | 150,000 – 250,000 | |
| 5 | Remove washbasin + pedestal/cabinet | set | 100,000 – 200,000 | |
| 6 | Remove bathtub | set | 300,000 – 500,000 | Depends on tub type |
| 7 | Remove shower head/shower set | set | 50,000 – 100,000 | |
| 8 | Remove mirror | piece | 50,000 – 80,000 | |
| 9 | Remove mirror cabinet | set | 80,000 – 150,000 | |
| 10 | Remove ventilation fan | piece | 50,000 – 80,000 | |
| 11 | Remove water heater | piece | 100,000 – 200,000 | |
| 12 | Remove washing machine (relocation) | piece | 100,000 – 150,000 | |
| 13 | Chase wall for water pipes | linear m | 40,000 – 60,000 | |
| 14 | Chase wall for electrical wiring | linear m | 30,000 – 50,000 | |
| 15 | Transport debris out of house | m³ | 250,000 – 400,000 | Depends on distance |
Electrical System Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install concealed wiring (single wire) | linear m | 25,000 – 40,000 | Wire not included |
| 2 | Cadivi electrical wire 1.5mm² | linear m | 8,000 – 12,000 | |
| 3 | Cadivi electrical wire 2.5mm² | linear m | 12,000 – 18,000 | |
| 4 | Install waterproof electrical outlet | piece | 80,000 – 150,000 | Outlet not included |
| 5 | Install light switch | piece | 50,000 – 80,000 | Switch not included |
| 6 | Install recessed LED light | set | 80,000 – 120,000 | Light not included |
| 7 | Install bathroom heat lamp | set | 150,000 – 250,000 | Lamp not included |
| 8 | Install ventilation fan | piece | 100,000 – 180,000 | Fan not included |
| 9 | Install water heater | piece | 200,000 – 350,000 | Heater not included |
| 10 | Install solar water heater | set | 500,000 – 1,000,000 | System not included |
| 11 | Install safety circuit breaker | piece | 100,000 – 150,000 | Breaker not included |
| 12 | Connect bathroom electrical panel | point | 150,000 – 250,000 |
Water Supply Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install PPR hot/cold water pipe Φ20 | linear m | 45,000 – 70,000 | Including pipe and fittings |
| 2 | Install PPR hot/cold water pipe Φ25 | linear m | 55,000 – 85,000 | Including pipe and fittings |
| 3 | Install Inox 304 water pipe | linear m | 80,000 – 120,000 | Including pipe and fittings |
| 4 | Install water shut-off valve | piece | 50,000 – 80,000 | Valve not included |
| 5 | Install pressure reducing valve | piece | 80,000 – 120,000 | Valve not included |
| 6 | Install auxiliary water meter | piece | 100,000 – 150,000 | Meter not included |
| 7 | Install main water filter | set | 150,000 – 250,000 | Filter not included |
| 8 | Install washbasin water supply point | point | 100,000 – 150,000 | |
| 9 | Install toilet water supply point | point | 80,000 – 120,000 | |
| 10 | Install shower water supply point | point | 120,000 – 180,000 | |
| 11 | Install washing machine water supply point | point | 100,000 – 150,000 | |
| 12 | Install bathtub water supply point | point | 150,000 – 250,000 |
Drainage Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install PVC drain pipe Φ42 | linear m | 40,000 – 60,000 | Including pipe and fittings |
| 2 | Install PVC drain pipe Φ60 | linear m | 50,000 – 75,000 | Including pipe and fittings |
| 3 | Install PVC drain pipe Φ90 | linear m | 60,000 – 90,000 | Including pipe and fittings |
| 4 | Install PVC drain pipe Φ114 | linear m | 80,000 – 120,000 | Including pipe and fittings |
| 5 | Install stainless steel floor drain | piece | 80,000 – 120,000 | Drain not included |
| 6 | Install strainer cover | piece | 50,000 – 80,000 | Cover not included |
| 7 | Install vent pipe | linear m | 60,000 – 100,000 | |
| 8 | Clear minor drain blockage | time | 150,000 – 300,000 | |
| 9 | Clear major drain blockage (machine) | time | 300,000 – 600,000 | |
| 10 | Replace main drain line | linear m | 150,000 – 250,000 | |
| 11 | Install odor trap (P-trap/S-trap) | piece | 100,000 – 150,000 |
Waterproofing Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Waterproof floor Sika/Kova (2 layers) | m² | 120,000 – 180,000 | Including materials |
| 2 | Waterproof floor torch-on membrane (2 layers) | m² | 180,000 – 280,000 | Including materials |
| 3 | Waterproof wall (1m from floor) | m² | 100,000 – 150,000 | Including materials |
| 4 | Waterproof wall-floor corners | linear m | 50,000 – 80,000 | |
| 5 | Waterproof around floor-penetrating pipes | point | 80,000 – 120,000 | |
| 6 | Waterproof pipe joints | point | 50,000 – 80,000 | |
| 7 | Water test waterproofing inspection (24h) | time | 200,000 – 300,000 | |
| 8 | Repair bathroom ceiling leaks | m² | 150,000 – 250,000 | |
| 9 | Negative-side waterproofing from below | m² | 200,000 – 350,000 | Special method |
Tile Installation Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install wall tiles 30x60cm | m² | 180,000 – 250,000 | Tiles not included |
| 2 | Install wall tiles 40x80cm | m² | 200,000 – 280,000 | Tiles not included |
| 3 | Install mosaic tiles | m² | 280,000 – 400,000 | Tiles not included |
| 4 | Install floor tiles 30x30cm | m² | 150,000 – 200,000 | Tiles not included |
| 5 | Install floor tiles 40x40cm | m² | 160,000 – 220,000 | Tiles not included |
| 6 | Install floor tiles 60x60cm | m² | 180,000 – 250,000 | Tiles not included |
| 7 | Install wood-look tiles | m² | 200,000 – 280,000 | Tiles not included |
| 8 | Tile grouting (joint sealant) | m² | 30,000 – 50,000 | Including materials |
| 9 | Create floor drainage slope | m² | 50,000 – 80,000 | |
| 10 | Install decorative trim | linear m | 80,000 – 120,000 | Trim not included |
| 11 | Install natural stone | m² | 350,000 – 550,000 | Stone not included |
Plastering – Painting – Wall Finishing Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Patch plastering after chasing | m² | 80,000 – 120,000 | Including mortar |
| 2 | Anti-moisture putty coating | m² | 40,000 – 60,000 | Including materials |
| 3 | Anti-alkali primer paint | m² | 25,000 – 40,000 | Including paint |
| 4 | Interior moisture-resistant paint (2 layers) | m² | 45,000 – 70,000 | Including paint |
| 5 | Epoxy waterproof paint | m² | 120,000 – 180,000 | Including paint |
| 6 | Treat wall mold/fungus | m² | 60,000 – 100,000 |
Bathroom Ceiling Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install moisture-resistant plasterboard ceiling | m² | 200,000 – 300,000 | Including materials and frame |
| 2 | Install PVC plastic ceiling | m² | 150,000 – 220,000 | Including materials and frame |
| 3 | Install moisture-resistant aluminum ceiling | m² | 280,000 – 400,000 | Including materials and frame |
| 4 | Repair old ceiling (patching, painting) | m² | 80,000 – 120,000 | |
| 5 | Cut ceiling hole for light/fan installation | hole | 50,000 – 80,000 |
Bathroom Door Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install aluminum-glass door | set | 300,000 – 500,000 | Door not included |
| 2 | Install plastic door with steel core | set | 250,000 – 400,000 | Door not included |
| 3 | Install water-resistant engineered wood door | set | 300,000 – 450,000 | Door not included |
| 4 | Install glass shower partition | m² | 150,000 – 250,000 | Glass not included |
| 5 | Install glass shower enclosure (cabin) | set | 500,000 – 800,000 | Enclosure not included |
| 6 | Install shower curtain | set | 100,000 – 150,000 | Curtain not included |
| 7 | Replace door water seal/gasket | linear m | 30,000 – 50,000 | Including gasket |
| 8 | Repair door hinges | piece | 50,000 – 100,000 | |
| 9 | Replace bathroom door lock | set | 80,000 – 150,000 | Lock not included |
Sanitary Equipment Installation Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install one-piece toilet | set | 300,000 – 500,000 | Toilet not included |
| 2 | Install two-piece toilet | set | 250,000 – 400,000 | Toilet not included |
| 3 | Install wall-hung toilet | set | 500,000 – 800,000 | Toilet not included |
| 4 | Install countertop washbasin | set | 200,000 – 350,000 | Basin not included |
| 5 | Install wall-hung washbasin | set | 180,000 – 300,000 | Basin not included |
| 6 | Install under-counter washbasin | set | 250,000 – 400,000 | Basin not included |
| 7 | Install pedestal sink | set | 200,000 – 350,000 | Sink not included |
| 8 | Install washbasin cabinet | set | 200,000 – 350,000 | Cabinet not included |
| 9 | Install soaking bathtub | set | 500,000 – 800,000 | Tub not included |
| 10 | Install massage bathtub | set | 800,000 – 1,500,000 | Tub not included |
| 11 | Install shower cabin | set | 600,000 – 1,000,000 | Cabin not included |
| 12 | Install washbasin faucet | piece | 80,000 – 150,000 | Faucet not included |
| 13 | Install shower head | set | 100,000 – 180,000 | Shower not included |
| 14 | Install standing shower column | set | 200,000 – 350,000 | Column not included |
| 15 | Install concealed shower system | set | 300,000 – 500,000 | System not included |
| 16 | Install bidet spray | piece | 80,000 – 120,000 | Spray not included |
| 17 | Install wall-hung urinal | set | 250,000 – 400,000 | Urinal not included |
Bathroom Accessories and Fixtures Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Install mirror | piece | 80,000 – 150,000 | Mirror not included |
| 2 | Install mirror cabinet | set | 150,000 – 250,000 | Cabinet not included |
| 3 | Install glass shelf | piece | 60,000 – 100,000 | Shelf not included |
| 4 | Install towel rack | piece | 50,000 – 80,000 | Rack not included |
| 5 | Install hooks | piece | 30,000 – 50,000 | Hook not included |
| 6 | Install toilet paper holder | piece | 50,000 – 80,000 | Holder not included |
| 7 | Install soap dispenser | piece | 40,000 – 70,000 | Dispenser not included |
| 8 | Install toothbrush cup holder | piece | 40,000 – 60,000 | Holder not included |
| 9 | Install safety grab bar | piece | 80,000 – 150,000 | Bar not included |
| 10 | Install elderly shower seat | piece | 100,000 – 180,000 | Seat not included |
| 11 | Install anti-slip mat | piece | 30,000 – 50,000 | Mat not included |
| 12 | Install hand dryer | piece | 150,000 – 250,000 | Dryer not included |
| 13 | Install electric towel warmer | piece | 200,000 – 350,000 | Warmer not included |
Repair and Maintenance Work
| No. | Item | Unit | Price Range (VND) | Notes |
|---|---|---|---|---|
| 1 | Repair leaking toilet | time | 150,000 – 300,000 | |
| 2 | Replace toilet flapper | set | 100,000 – 200,000 | Including flapper |
| 3 | Replace toilet flush mechanism | set | 200,000 – 350,000 | Including mechanism |
| 4 | Replace toilet seat | piece | 100,000 – 180,000 | Seat not included |
| 5 | Repair leaking faucet | piece | 80,000 – 150,000 | |
| 6 | Replace faucet washer/gasket | piece | 50,000 – 100,000 | Including washer |
| 7 | Replace shower head | piece | 50,000 – 100,000 | Head not included |
| 8 | Repair water heater (no part replacement) | time | 150,000 – 300,000 | |
| 9 | Clean water heater | time | 200,000 – 350,000 | |
| 10 | Replace water heater anode rod | piece | 150,000 – 250,000 | Including rod |
| 11 | Replace water heater heating element | piece | 200,000 – 400,000 | Element not included |
| 12 | Repair ventilation fan | piece | 80,000 – 150,000 | |
| 13 | Repair bathroom heat lamp | set | 150,000 – 300,000 | |
| 14 | Replace heat lamp bulb | bulb | 80,000 – 150,000 | Bulb not included |
| 15 | Treat bathroom odor | time | 200,000 – 400,000 | |
| 16 | Complete bathroom cleaning service | time | 300,000 – 500,000 |
Notes:
- Above prices exclude VAT (10%)
- Prices may vary depending on actual site conditions
- Main materials (tiles, sanitary equipment, accessories…) are calculated separately according to customer requirements
- Warranty: Waterproofing 5 years, Electrical and plumbing 2 years, Equipment according to manufacturer
- FREE site survey and detailed quotation
- 24/7 consultation hotline: 0862.662.317
Duc Khoi’s Professional Complete Bathroom Renovation Process
To ensure construction quality and long-term durability, our bathroom renovation process follows proper technical standards. Specifically:
Step 1: Site Survey and Design Planning
Engineers measure space dimensions in detail, inspect current water supply and drainage systems, and assess wall and floor structural conditions. Then provide design consultation suitable for usage needs, budget, and homeowner’s feng shui elements. 2D-3D design drawings help you clearly visualize the space after completion and accurately determine sanitary equipment positions, tiles, and electrical/plumbing systems before construction.
Step 2: Remove Old Equipment and Demolition
Remove all old toilets, washbasins, shower heads, and sanitary equipment. Next, demolish old tiles, break down old cement mortar layers down to the original concrete base if complete renovation is needed. For apartment bathroom renovation, note appropriate construction hours (usually 8am-5pm on weekdays) and protect common areas to avoid disturbing neighbors.
Step 3: Reinstall Concealed Piping and Electrical Systems
Completely replace water supply lines and drainage pipes with high-quality PPR and PVC pipes. Concealed electrical systems are rearranged with properly standardized electrical wiring with protective conduits. Switch, outlet, and lighting positions are precisely located according to drawings.
Step 4: Absolute Waterproofing Treatment
The bathroom waterproofing layer is applied in 2-3 layers using specialized materials (Sika, polymer bitumen, or waterproofing membrane). Thoroughly treat wall corners, pipe collars, and joints – the most leak-prone areas. After completion, conduct a water ponding test for at least 48-72 hours to check watertightness.
Step 5: Floor Leveling with Drainage Slope and Tile Installation
Level cement floor creating a standard 1-2% slope toward the floor drain so water drains quickly without pooling. After the floor dries, proceed with tile installation according to design drawings. Anti-slip floor tiles are installed first, then wall tiles from bottom to top. Mortar joints must be even, aligned, and tight to ensure both aesthetics and waterproofing capability.
Step 6: Install Sanitary Equipment and Finishing
Install all sanitary equipment in designed positions: toilet, washbasin, shower, bathtub (if any), mirror, washbasin cabinet. Electrical and plumbing systems are connected and tested for operation. Install exhaust fan, lighting, bathroom accessories such as towel racks, hooks, and paper holders.
Step 7: Professional Cleaning and Handover
Clean all dust, cement residue, and remaining mortar on tiles and equipment. Professional deep cleaning makes surfaces shiny and tile joints clean. Finally, hand over the project to homeowners with usage instructions, renovation warranty, and quality commitment. Average renovation time for a 3-5m² bathroom is 5-7 days, depending on design complexity.
Common Costly Mistakes in Bathroom Renovation
Many families have to spend tens of millions of VND extra due to regrettable mistakes during renovation. Below are common errors you should avoid.
Buying Sanitary Equipment Before Re-measuring Area
Not few cases where homeowners purchase toilets, washbasins, and shower heads before rough work is completed. After tile installation, actual area shrinks by about 8-12cm compared to initially due to tile and mortar thickness. The result is sanitary equipment doesn’t fit properly, requiring returns or position adjustments causing waste.
Saving Money on Waterproofing – Regret Forever
This is the most costly mistake many people make. Some families choose cheap, low-quality waterproofing materials or only apply 1 layer instead of 2-3 layers per technical standards. The consequence is after 1-2 years of use, the bathroom leaks, water flows to the floor below, walls become moldy.
Overlooking Concealed Electrical System When Adding Equipment
Many families don’t plan ahead for installing additional water heaters, hand dryers, high-end exhaust fans when designing bathrooms. When wanting to add these equipment after completion, they must run exposed wiring that ruins aesthetics and poses electrical hazards in damp environments.
Outstanding Advantages When Using Duc Khoi’s Complete Bathroom Renovation Service in Hanoi
With over 12 years of experience in design – construction – home repair, Duc Khoi proudly provides the most professional and reputable bathroom renovation service in Hanoi.
Skilled Workers, Standard Technical Construction
Duc Khoi possesses an experienced team of workers systematically trained in home renovation processes. Each project has an engineer directly supervising, ensuring every small detail like waterproofing, floor slope, and sanitary equipment installation meets standards.
Transparent Quotation, No Hidden Costs
Before starting work, Duc Khoi provides detailed quotations for each work item and material. Clear pricing helps you proactively control budget, avoiding sudden cost increases. We commit to the most competitive prices in Hanoi market with superior construction quality.
Free Design Consultation, Space Optimization
Duc Khoi’s architect team provides free design consultation, helping you optimize area even in small spaces. We combine modern aesthetics with destiny-aligned bathroom feng shui, ensuring the most convenient functional use.
Genuine Materials, Lifetime Waterproofing
Duc Khoi only uses materials from reputable brands: Dong Tam, Prime tiles; TOTO, American Standard, Inax sanitary equipment; Sika, Soprema waterproofing materials. Especially, we commit to absolute waterproofing with standard 3-layer technical process, 72-hour water testing before tile installation. All materials have anti-counterfeit stamps and clear origins.
Transparent Legal Permits and Procedures
Duc Khoi supports consultation and construction permit processing (if necessary) for major renovation projects. Bathroom renovation contracts are fully signed, clearly stating rights and responsibilities of both parties. All transactions have VAT invoices, ensuring customer rights according to legal regulations.
Cleaning and Clean Site Return
After completing bathroom construction, Duc Khoi’s team performs professional cleaning of the entire area. We clean up dust, debris, polish tiles to a shine, and hand over the project in “move-in ready” condition.
Conclusion
Above is Duc Khoi’s sharing about bathroom renovation. We hope this article helps you find the information you need. If you need our support, please call our Hotline: 0862 662 317 for the best consultation. Best regards!
