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How much do my plan modifications cost?

Modification type Average costs (approx.)
Adding or removing a garage Starting at $300
Garage: Front entry to side load or vice versa Starting at $300
Adding a screened porch Starting at $300
Adding a bonus room in the attic Starting at $450
Changing full basement to crawl space or vice versa Starting at $245
Changing full basement to slab or vice versa Starting at $245
Changing exterior building materials Starting at $200
Changing roof pitch Starting at $600
Adjusting ceiling height Starting at $280
Adding, moving or removing an exterior opening Starting at $75
Adding or removing a fireplace Starting at $90
Modifying a non-bearing wall or room $65 per room
Changing exterior walls from 2"x4" to 2"x6" Starting at $600
Redesigning a bathroom or a kitchen Starting at $150
Reverse plan right reading Garage: $100, House: $150
Adapting plans for local building code requirements Quote required
Engineering and Architectural stamping and services Referral provided
Mobile Adjust plan for universal access
Quote required
Interactive Illustrations (choices of exterior materials) Quote required
Metric conversion of home plan Starting at $295
Metric conversion of a garage Starting at $295
Metric version of the materials list Starting at $175
Adding a basement apartment (with independent entry) Starting at $595
Note: The average prices specified below are provided as examples only. They refer to the most commonly requested changes, and are subject to change without notice. Prices for changes will vary or differ, from the prices below, depending on the number of modifications requested, the house plan size, style, quality of original house plan, format provided to us (originally drawn by hand or computer), and method of design used by the original designer. To obtain your cost estimate or to get more information, please contact us at 1-800-567-5267, or fill complete our online form.