Find a base plan
Browse the catalog and find a plan that's close to what you need. The Modifications Wizard is started from a specific plan page — it works with a selected plan, not as a general custom-design service.
Customization
Plan modifications.
Found a plan that's close but not quite right? Submit a structured modification request directly from the plan page and our team will review your change requirements.
How modifications work
Three steps to a customized plan.
Open the Modifications Wizard
On the plan's detail page, click Modify This Plan. The wizard opens pre-loaded with that plan's data. Describe the changes you need: room sizes, window placement, garage configuration, roof pitch, foundation type, and more.
Submit and await review
Submit your change-order request. The BuildingPlans.com team reviews your request and follows up with a quote and timeline. Modifications are not instant — this is a structured review process, not a real-time CAD editor.
What can be modified
Common modification requests.
- Room dimension changes (expand or reduce bedroom, living, or garage sizes)
- Window and door relocation or addition
- Roof pitch adjustments
- Foundation type changes (slab, crawl space, basement)
- Garage size changes or addition of a garage
- Exterior style adjustments (siding, trim, porch additions)
- Master suite or bathroom layout changes
- Adding or removing a bedroom
Not all plans support modification requests. Plan pages indicate whether modifications are available for a specific plan. If modifications are not available, the Modify This Plan button will not appear.
Ready to find a plan to modify?
Start by browsing the catalog. When you find a plan that's close to what you need, open the Modifications Wizard from that plan's page.
Modifications are not automated. Submitting a modification request does not guarantee a specific outcome, price, or timeline. All requests are reviewed individually by the BuildingPlans.com team. Final modified plans may require review by a licensed designer or structural engineer depending on the scope of changes and local permit requirements.