Construction Speed & Event Strategy

Before beginning a major HQ31–35 upgrade, stack as many useful construction bonuses as possible.
Construction Speed Setup
Prepare:
Villa — Construction bonuses
Refugees for Villa — Additional construction-speed boosts
Sophia at 5 Stars — Construction/resource benefits
Lab buffs — Check available construction bonuses
Alliance City 4 — Useful if held by your alliance
Alliance Lab — Prioritize relevant construction research
Speed-ups — Save and collect them before major builds
The goal is to apply these bonuses before committing to the longest construction timers.
Alliance Duel Day 2 Strategy
You can also time a major HQ completion around Alliance Duel Day 2.
The Strategy
Start your HQ upgrade ahead of time.
When construction finishes and the green checkmark appears:
DON'T TAP IT YET.
Hold the completed HQ until Day 2, then finish it when the upgrade can contribute toward your event points.
Be Careful
One accidental tap can complete the upgrade early and cost you the opportunity to use that HQ completion for Day 2 scoring.
Double-Dip Your Upgrade
When possible, also align the completion with Full Preparedness.
This allows the same major construction completion to contribute toward multiple scoring opportunities when the applicable events overlap.
HQ Upgrade Checklist
Before starting an expensive HQ upgrade:
✓ Required building ready
✓ Required resources/Steel available
✓ Sophia prepared
✓ Construction bonuses active
✓ Speed-ups available
✓ Event timing considered