Guide
What homeowners need to know.
Short Answer
Permit-ready plans are drawings prepared for city review. They still need to match your lot, ADU type, utilities, structure, and local requirements.
Standard vs Custom
Standard plans can save time when the site fits. Custom plans are better when the lot, design goals, or constraints do not fit a standard template.
What to Ask
Ask what is included, who handles corrections, whether engineering is included, and how plans translate into construction pricing.
Cost table
Use ranges until scope is real.
| Item | Planning range | Why it moves |
|---|---|---|
| Standard plan adaptation | Lower planning cost | Only useful when the lot and scope fit. |
| Custom ADU plan | Higher planning cost | Better for unusual lots, design goals, or constraints. |
| City corrections | Variable | Confirm revision limits before signing. |
Mistakes
Avoid these expensive shortcuts.
- Buying plans before feasibility
- Ignoring engineering and utility needs
- Assuming permit-ready means build-ready
FAQ
Fast answers.
Are permit-ready plans enough to build?
Not always. Contractors may still need details, engineering coordination, material decisions, and scope assumptions.
Do standard ADU plans save money?
They can, if your lot and goals fit. Forcing a bad template onto a real property is how cheap plans get expensive.
Who should review plans before construction bids?
A builder, design-build team, or construction-aware planning provider should review constructability and cost assumptions.