Design time is mostly decision time plus coordination time. Fast projects have clear owners, clear budgets, and fewer surprise site conditions.
Rough ranges (not promises)
- Feasibility sketches: days to a few weeks
- Full custom home design: many months
- Addition / ADU design: often 2–6+ months before permits
- Simple TI: weeks to a few months
Speed boosters
Complete surveys, decisive stakeholders, realistic budgets, and fewer midstream style changes.
Common delays
- HOA and historic review
- Utility company responses
- Engineering queue times
- Owner travel and indecision
How to use time well
Batch decisions, set meeting cadences, and freeze scope at agreed milestones.