Illuminating Healthy Spaces —
defining green renovation with science and data.
GD Green Renovation Certification is an international-grade healthy indoor environment review system. From design planning and material inspection to post-completion testing, we safeguard non-toxic quality for every living and working space through objective, transparent processes.
Beautiful renovations are everywhere — but how do you prove invisible health?
Data over feelings. We convert invisible air-quality risks into clear, scientific checkpoints.
GD Certified
peace of mind you can see!
Drag to compare: they look the same — the difference is in the air you can’t see. (Illustration; values are examples. GD formaldehyde limit: 0.08 ppm)
Common hidden risks in conventional renovation
Dead zones · toxins keep accumulating
Without airflow-path calculations, formaldehyde and TVOC can't escape — trapped in sealed rooms for 3–15 years.
Non-eco adhesives & oil-based paints
Strong glues, wood adhesives, and oil-based paints contain high concentrations of benzenes and free formaldehyde. The finish looks fine, but the interior smells sharp.
Dust & tobacco pollution on site
Smoking on-site and no dust extraction leave carcinogenic tar and nicotine embedded in cement walls.
No instrument-based post-completion inspection
Without third-party testing, olfactory adaptation hides long-term irreversible harm to children and elderly respiratory systems.
GD Green Renovation · 4-phase scientific safeguards
Phase P · Mandatory ventilation calculations
Pre-construction review of diagonal airflow paths ensures HRV or window configuration delivers ≥ 1.5 ACH.
Phase M · Source low-emission material list
Interior surfaces must be 60–75% low-VOC green materials — no asbestos or heavy-metal solvents allowed.
Phase D · No smoking & mandatory dust extraction
Enforced dust barriers, machine-local dust collection, and electrical safety during construction — protecting both workers and future occupants.
Phase C · Post-completion third-party instrument testing
TAF-accredited labs perform on-site sampling — HCHO < 0.08 ppm required before an anti-counterfeit certificate is issued.
From blueprint to handover: four-phase visualized workflow
Clear technical diagrams demonstrate rigorous standards — every step is auditable via instrument data and process controls.
Phase P · Planning & Design
Calculate inlet/outlet airflow, HRV short-cycle protection, and universal-access circulation.
✓ P-2 Indoor air-exchange calculation
✓ P-9 Lighting power density check
Phase M · Materials & Application
Verify low-emission green material labels, water-based low-HCHO adhesives, and whole-space material coverage.
✓ M-2 Eco-adhesive inspection
✓ M-5 Green material usage > 75%
Phase D · Site Safety & Protection
Mid-construction on-site audits: strict no-smoking policy, dust extraction, and electrical safety during construction.
✓ D-2 Woodworking local dust extraction
✓ D-3 On-site tobacco/alcohol audit
Phase C · Post-Completion Testing
TAF-accredited professional instruments perform on-site air sampling — dual-blind review before official certificate issuance.
✓ C-2 HCHO/TVOC on-site sampling
✓ C-3 GD certification badge issuance
GD Green Renovation · 4-Tier Award Standards
Assessed on design, materials, site management and on-site air testing, four award tiers are strictly delineated. Every tier — regardless of level — must pass post-completion on-site air-quality testing.
How do you become a certified GGCb Green Designer?
A clear 4-step pathway — interior designers and related professionals can easily grasp the certification process.
Enroll in training
Complete the 16-hour professional certification training — master ventilation-path calculation and green-material regulations.
Written & practical exam
Practical drawing exercises on green renovation indicators plus a written test — pass the test to complete the review.
Receive your certification ID
Obtain the official GGCb green-designer certificate and official stamp — public data for owner verification.
Open cases in the workstation
One workstation account for case submission, material registration, testing appointments, and certificate downloads.
Upcoming featured training & continuing education
Limited seats — reserved on a first-paid basis.
第十屆中區第二梯次GD綠裝修認證課程暨檢定考試
2 天 16 小時學會裝修負荷率、健康建材與施工管理，通過檢定即取得 GD 綠設計師資格。
第十屆北區第四梯次GD綠裝修認證課程暨檢定考試
2 天 16 小時學會裝修負荷率、健康建材與施工管理，通過檢定即取得 GD 綠設計師資格。
第十屆南區第二梯次GD綠裝修認證課程暨檢定考試
2 天 16 小時學會裝修負荷率、健康建材與施工管理，通過檢定即取得 GD 綠設計師資格。
Real results, publicly verifiable
932 GD certification applications covering 43,713 ping of indoor space across Taiwan.
