Post-Renovation Completion Inspection
A New Renovation "Completion Inspection" Is More Than a Quick Glance
A new renovation "completion inspection" is not simply a quick look around — it involves systematically verifying, against the contract, quotation, drawings, and material samples, whether each item of work has been completed, whether all functions are operating correctly, whether the workmanship meets the required standard, and whether there are any defects requiring rectification. Ideally, inspections should be conducted in three separate stages — concealed works, interim works, and final handover — rather than waiting until all works are finished before carrying out the first inspection.
What Does "Completion Inspection" Cover
1. Verify Scope of Work
Cross-reference the following documents:
Renovation Contract
Quotation & Works Item List
Floor Plans, Elevation Drawings & Electrical Layout
Material, Brand, Model & Colour Samples
Approved Change Orders & Additional Works
Furniture Design Drawings & Dimensions
Check each item for anything omitted, done incorrectly, under-delivered, or where materials were substituted without approval. For bespoke furniture, pay particular attention to dimensions, door swing direction, internal shelf layout, number of drawers, hardware, and finishing details.
2. Plumbing & Electrical Works
Electrical
- Test all light switches, power outlets, and two-way switches one by one.
- Confirm each switch controls the correct device.
- Inspect the consumer unit, circuit labelling, and residual current devices (RCDs).
- Check for loose sockets, misaligned faceplates, or cracked covers.
- Test exhaust fans, range hoods, water heaters, air conditioning units, and other fixed appliances.
- Verify network, TV, telephone, and smart home connection points.
For work required to be carried out by a registered electrical contractor, request the relevant test certificates or completion documents from the contractor — do not rely solely on a phone charger test as a safety assessment.
Water Supply & Drainage
- Turn on all taps and showerheads to test water pressure and hot/cold water supply.
- Check sinks, wash basins, toilets, and water heating equipment for leaks.
- Test kitchen, bathroom, washing machine, and floor drainage.
- Note drainage speed, water pooling, backflow, and any odours.
- Inspect pipe joints, inside cabinets, and false ceilings for condensation or dampness.
- If specified in the contract, request water pressure test records for review.
3. Waterproofing
Kitchens, bathrooms, balconies, and utility platforms are the key areas to inspect:
- Whether the waterproofing layer has been applied within the scope specified in the contract.
- Whether corners, pipe penetrations, floor joints, and drain surrounds are fully sealed.
- Whether the silicone sealant around shower areas and bathtubs is continuous and gap-free.
- Whether the floor slopes toward the drain outlet.
- Whether there is any seepage on the ceiling below or adjacent walls after the water test.
Waterproofing is best tested before tiling using a closed water test (flood test). The common practice is to test for no less than 24 hours; some renovation projects arrange for 48 hours. The actual duration should follow the contract, material system, and engineer's requirements.
After completion, drains, fixtures, and joints should be tested again, as tiling, drilling, or fixture installation may damage the existing waterproofing layer.
4. Tiling & Masonry Works
- Whether wall and floor tiles are level, plumb, and properly aligned.
- Whether grout lines are even, fully filled, and consistent in colour.
- Whether there are chipped corners, cracks, scratches, or noticeable colour variations.
- Tap the tile surface to check for hollow spots over a large area.
- Inspect thresholds, trim pieces, skirting boards, and wall corners.
- Whether the floor has any height differences or unreasonable pooling of water.
- Whether floor drain covers, access panels, and drainage fittings are properly installed.
If hollow spots are found, do not focus on a single location alone — record the positions and extent, then let the contractor assess whether removal and re-laying is required. Common claims online that "exceeding a certain percentage automatically fails" do not apply to all materials and contracts; the applicable standard should be based on the contract specifications, construction standards, and professional judgement.
5. Paint, Walls & Ceiling /
6. Carpentry & Custom Furniture
Paint, Walls & Ceiling
- Whether the color matches the approved sample.
- Whether the surface has brush marks, drips, bubbles, cracks, sanding marks, or filler traces.
- Whether walls are straight, without waves or noticeable unevenness.
- Whether corners, window edges, door frames, and skirting boards are neatly finished.
- Inspect under natural light, indoor lighting, and side lighting separately.
- Whether ceiling light coves, false ceilings, and access panels are flat and even.
Areas near windows and using side lighting at night are usually the easiest places to spot uneven walls and filler marks.
Carpentry & Custom Furniture
- Whether cabinet doors and drawers open smoothly, are aligned, and can be fully opened.
- Whether hinges, slides, pull-out baskets, and other hardware are installed as per the agreed brands.
- Whether cabinet bodies are sturdy, without wobbling or obvious warping.
- Whether countertops, cabinet sides, and wall finishing joints are neat.
- Whether door frames, door leaves, skirting boards, and windowsill boards have scratches.
- Check inside cabinets for water leaks, odors, rough edges, or unfinished paintwork.
- Confirm that actual dimensions do not obstruct door opening, movement, maintenance, or appliance use.
7. Doors, Windows & Equipment
- Check that the main door, bedroom doors, and bathroom doors open and close properly.
- Verify that door locks, hinges, door stops, and anti-collision fittings are functioning.
- Ensure windows can be fully opened, closed, and locked.
- Test air conditioners, water heaters, exhaust fans, range hoods, and appliances one by one.
- Check that manuals, warranty cards, remote controls, keys, and accessories are all included.
- Verify that appliance brands, models, and quantities match the quotation.
8. Cleaning & Handover Documentation
- Remove construction waste, masking tape, dust, and leftover materials.
- Clean glass surfaces, floor tiles, cabinet interiors, and appliance surfaces.
- Hand over the electrical panel diagram, plumbing layout, cable routing plan, and equipment manuals.
- Hand over testing records, qualified person certificates, and warranty documents.
- Record all defects, responsible parties, remediation methods, and completion deadlines.
Inspection & Acceptance Process
Prepare contracts, drawings, quotations, samples, and change records in advance.
Conduct an overall walkthrough first, then test each item room by room.
Photograph, number, and mark the location of each issue found.
Record all issues in a formal "defect list" — do not rely on verbal communication alone.
Confirm the rectification method and deadline for each item with the contractor.
Re-inspect each item after rectification, with particular attention to water, electrical, waterproofing, and equipment.
Only sign the formal acceptance document after all major issues have been resolved.
Handle the final payment and retention of warranty funds in accordance with the contract.
Industry practitioners often recommend withholding a portion of the final payment until major defects are rectified. However, the amount and method of retention must comply with the contract — arbitrary deductions are not permitted. The safest approach is to stipulate the final payment terms, retention amount, acceptance standards, and defect rectification deadlines clearly in the contract from the outset.
Benefits of a Completion Inspection
Fewer Future Repairs
The sooner you identify leaks, misalignment, hollow tiles, or electrical issues, the easier it is to carry out targeted repairs. If problems are only discovered after moving in, you may need to move furniture, dismantle cabinets, remove tiles, or redo paintwork — significantly increasing both cost and time.
Protection of Payment and Negotiating Power
A written defect list gives the owner clear documentation that the works have not been fully completed, preventing contractors from claiming "delivery has been made" as grounds to demand full payment of the outstanding balance.
Ensuring Safety
Electrical systems, gas, water heaters, waterproofing, and structural alterations are not merely cosmetic concerns. An inspection can identify electrical faults, water leaks, overheating, inadequate ventilation, and other safety hazards at an early stage.
Benefits of Completion Inspection (Continued)
Avoid Future Disputes
Photos, test results, drawings, and inspection records can clearly show:
- What was originally agreed upon.
- What was actually completed.
- What the defects are.
- When the contractor was notified.
- When the contractor promised to rectify the issues.
Initiating the Warranty Period
Inspection documents, completion dates, and defect records typically affect when the warranty period begins and any subsequent follow-up repairs. You should request that the warranty scope be clearly stated in writing, including individual timeframes for plumbing, electrical, waterproofing, carpentry, hardware, appliances, and paintwork — do not simply accept a blanket "one-year whole-flat warranty."
Common Owner Mistakes
Only inspecting in daylight from a distance, not checking walls under raking light.
Only checking appearance, without testing water, electricity, drainage, and equipment.
Laying tiles or sealing surfaces before waterproofing has been tested.
Accepting substitute materials without cross-referencing the quotation.
Only reporting issues verbally via WhatsApp, without a formal defect list.
Signing off "all completed" without re-inspection.
Repairing defects independently after discovery, making it difficult to establish liability.
Paying the final balance before obtaining drawings, test records, warranty cards, and equipment manuals.
Judging pass or fail based on a single online standard, ignoring the contract and actual intended use.
Recommended Tools to Bring
Flashlight and Charger
Measuring Tape and Spirit Level
Socket Tester
Notepad, Pen, Tape, and Labels
Camera or Smartphone
Small Amount of Water to Test Drainage
Contract, Quotation, Drawings, and Material Samples
For specialist works, request the contractor to arrange a qualified professional to conduct the handover inspection
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