Common Omissions and Mistakes on Residential Plans

General

Missing site plan or missing information from the site plan (site plans are NOT the same as your plot plan)
Missing contour lines on your site plan – these are required at 2′ increments
Missing manufacturers floor system engineering or manufacturers layout sheet
Missing truss design drawings or truss design layout sheet

Incorrect footing depth. Footings must be below the frost line and at least 12″ into undisturbed or engineered compacted fill
Missing or inadequate expanded and pier footings for loads imposed by the roof/truss system
Missing bearing walls as required by the truss design drawings

Incorrect ceiling board. Where spacing of ceiling joists or trusses are 24″ OC, ½” sag-resistant gypsum or ?” gypsum is required
Missing tempered glazing.
Riser heights or runs that exceed limits. Risers can be a max of 7¾” and runs can be no shorter than 10″
No heat source indicated on the plans
No attic access or under floor access indicated on the plans

Missing attic vent calculations. This includes indicating the required ventilation as well as how this will be achieved (vent sizes and locations)
Inconsistencies where elevation show a flat lot while site plan shows a sloping pad

Engineering not provided where design exceeds the limits of 2018 IRC
Missing or incorrect braced wall design (including calcs)
Inconsistent details where one page indicates one method and another page indicates a different method
Attached engineering does not match the submitted plans
Missing connection details and/or fasteners being used
Missing or inadequate headers
Inadequate bearing for trusses based on truss design drawings
Incorrect use of hardware (mechanical fasteners and hardware MUST be used in applications intended by the manufacturer)
Missing engineering for pre-fab roof design

Missing note indicating a minimum of (2) two 20A rated small appliance circuits to supply receptacles in the kitchen and dining room
Missing note indicating all branches that supply 120V, single phase, 15A and 20A outlets located in a bedroom are protected by AFCI
Missing convenience receptacles. These are required for all habitable spaces such that no point along the wall is more than 6′ from a receptacle
Missing load calculations when 200A service is indicated and house appears to exceed this demand
Missing smoke alarms. These are required in each sleeping room, outside each sleeping room and on each floor level.
Missing Carbon Monoxide detectors in sleeping areas