Recently, my good friend and client sent me the following interesting info that I thought I might share with all of you regarding the possible origin of the many red doors we see on houses today (apart from the fact that they often look great and really improve curb appeal):

In the earlier days of the church it was understood that a soldier could not
pursue an enemy that had entered through the red doors of a church. The red doors
were a symbol of refuge and sanctuary for all people who entered. To all concerned
the red on the doors signified the blood of Christ that had been shed so that all
who came to him could be saved. Anyone who passed through those doors was safe as
long as they stayed behind them.   Over time, Christian people began to see the
red doors of the church as symbolizing not only physical refuge and safety, but
spiritual refuge as well. The blood of Jesus, and of the Church's martyrs, that
the red doors of the church symbolized, would protect you from evil, both physical
and spiritual. The red doors spoke to the world of holy ground that existed inside
those doors, space that had been purged and made clean by God's Holy Spirit. Today
people choose to paint their church doors red for many of the same reasons that
churches did centuries ago. The Episcopal Church of the Good Samaritan, as I'm sure your
church does (even if it doesn't have red doors), would like to be recognized as a
place of peace, refuge and salvation for all people in our community.