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Modification Price List
What Are the Average Costs for Customizing Plans?
The following chart reflects average costs of some common modifications. Bear in mind that some requested changes may necessitate other changes, which can incur other costs.*
| Description of Modification: | Average Cost: |
|
Adding or removing living space (square footage) Adding or removing a garage Garage: Front entry to side load or vice versa Adding a screeened porch Adding a bonus room in the attic Changing full basement to crawlspace or vice versa Changing full basement to slab or vice versa Changing exterior building materials Changing roof lines Adjusting ceiling height Adding, moving, or removing an exterior opening Adding or removing a fireplace Modifying a non-bearing wall or room Changing exterior walls from 2"x4" to 2"x6" Redesigning a bathroom or kitchen Reverse plan right reading Adapting plans for local building code requirements Engineering and Architectural stamping and services Adjust plan for handicapped accessibility Interactive illustrations (choices of exterior materials) Metric conversion of home plan Metric conversion of garage plan Metric conversion of the materials list Adding an in-law suite |
Quote required Starting at $600 Starting at $300 Starting at $300 Starting at $450 Starting at $495 Starting at $495 Starting at $200 Starting at $600 Starting at $280 $75 per opening Starting at $90 $65 per room Starting at $995 Starting at $150 Garage: $30, House: $125 Quote required Referral Only Quote required Quote required Starting at $495 Starting at $195 Starting at $150 Starting at $595 |
* For example, to change from lap siding to brick siding, the foundation and elevations have to be changed as well as any section drawings that reference lap siding. Still, custom modifications to stock plans can be very cost effective. Hiring an architect to design a custom home from scratch typically runs about 4% of construction costs, so on a $300,000 home you might pay as much as $12,000 in architectural fees.
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