New Build Defects Checklist
A comprehensive checklist for identifying defects in new build properties before handover. Covers structural, cosmetic, electrical, plumbing, and external defects.
Common New Build Defects to Look For
New build properties almost always have defects — from minor cosmetic issues to more serious problems with electrics, plumbing, or the structure. Industry surveys suggest the average new build home has over 100 identifiable defects at the time of handover.
Understanding what to look for — and documenting everything clearly with photographic evidence — is essential for ensuring the builder rectifies all defects under their warranty obligations. Our complete guide to snagging explains the process in detail.
This checklist divides defects into categories by severity and trade. For each item found, record the location, take a photo, and note the severity. Use our free snagging list template or SnaggingTrack digital app to capture everything systematically.
Structural
Highest priority — report immediately
Functional
Affects day-to-day use
Services
Electrical & plumbing issues
Cosmetic
Finish and appearance issues
Structural Defects
Structural defects are the most serious category and must be addressed immediately.
- Cracks in walls wider than 3mm (especially diagonal or step cracks)
- Roof structure — sagging rafters or ridge
- Foundation movement or subsidence indicators
- Floor joists — excessive deflection or movement
- Lintels over doors and windows correctly bedded
- Structural walls — no voids or inadequate fill
- Retaining walls — properly constructed and drainage provided
Cosmetic Defects
Cosmetic defects are less urgent but should all be recorded and remedied before handover.
- Paint — runs, misses, brush marks visible
- Plasterwork — hollows, cracks, poor finish
- Skirting boards — gaps at corners, nail pops
- Architraves — poor mitres, gaps to plaster
- Internal doors — scratches, dents, poor finish
- Windows — scratches to frames or glass
- Floor finishes — chips, scratches, uneven joins
- Tiling — chipped tiles, uneven grout lines, lippage
- Kitchen units — scratched doors, misaligned handles
- Bathroom sanitaryware — scratches or cracks
Electrical Defects
All electrical work must comply with Part P Building Regulations. Check certificates are provided.
- Consumer unit correctly installed and labelled
- RCD protection on all circuits
- All sockets and switches level and aligned
- Socket covers scratch-free and firmly seated
- Smoke alarms at all required positions
- CO detector adjacent to boiler (if required)
- All light fittings installed and operating
- External lights installed where specified
- Part P electrical certificate provided
- EV charging point installed (if specified)
Plumbing & Heating Defects
Check for leaks, pressure issues, and correct commissioning of all heating systems.
- No drips or leaks at any fitting or connection
- Hot water reaching adequate temperature
- Boiler commissioned — warranty card provided
- All radiators heating correctly and bled
- Thermostatic radiator valves fitted and working
- Underfloor heating commissioned (if applicable)
- Stop valves accessible and turning freely
- Cold water pressure adequate at all taps
- Shower pressure and temperature satisfactory
- Water Regulations completion certificate provided
External Defects
External defects are often overlooked but can be costly to fix after handover.
- Roof tiles — all secure, no cracked or slipped tiles
- Ridge and hip tiles bedded and pointed
- Flashings correctly dressed and sealed
- Gutters aligned correctly, no sagging or overflow
- Downpipes connected and discharging to drain
- Fascia and soffit boards secure and painted
- External render — no cracking or delamination
- Brickwork — no efflorescence or staining
- Driveway/pathway — level, no cracking
- Fencing — secure, to correct height and specification
How to Report New Build Defects
Use the Developer's Defects Portal
Most major house builders now have an online portal or app for reporting defects. Always use this official channel and keep a copy of everything you submit. Take screenshots of all submissions.
Report to the NHBC
If your new build is covered by NHBC Buildmark warranty, you can report defects directly to the NHBC if the developer fails to respond. The NHBC covers major structural defects for 10 years and most other defects for 2 years.
Legal Options
If defects are not resolved within a reasonable time, you may have options under the Consumer Rights Act 2015 or the New Homes Quality Code. Always seek legal advice for serious structural defects.
Track New Build Defects Digitally with SnaggingTrack
Instead of a paper checklist, use SnaggingTrack to capture defects digitally with photos, locations, and automatic reporting. Our snagging app makes it easy to build a comprehensive defects register that can be shared with your builder or used as evidence for NHBC claims.