Further in the development research tree you will get access to the "rapid development" talent, one of the best talents in the whole game. It allows you to reduce the construction and research time by 20% for all you will start in the next 5 minutes.
Info: To unlock the talent you will need 58 talent points.
The development research tree gives multiple skills that reduce construction times, make sure you get them. For more information also check Starter Tips
You can research multiple reduction in your research center. At the start make sure you have researched all reduction availlable to your HQ Level before starting the next big construction.
Activating the buff in your HQ by using biocaps will give you are reduction up to 15%. You may want to only use it on big building because of the cost of 5700 biocaps.
By raising your vip level you can get a reduction of 10% at level 4 and one additional 10% at level 9, so make sure you activate vip before starting long building.
The Governor of your state has also the ability to give out buffs that reduce construction time.
Info: This will only be available to you if your state you unlocked governor yet.