Perma-Column® vs. Cast in Place vs. Wood in Ground: What Post Foundation System is Best?

Any building or post-frame structure is only as good as the foundation and column support system that keeps it standing tall. A failure where columns meet the ground means a failure for the entire building.

At Farrow Built, we almost exclusively use Cast in Place columns, but the truth is: it might not be the best option for everyone. In this post, we compare three common post-frame foundation systems across cost, strength, and ease of installation.

System Overviews

• Perma-Column® – Pre-cast concrete post base with integrated steel bracket. Arrives ready to backfill.
• Cast-In-Place – Pour concrete on-site into form, set bracket on top.
• Wood-In-Ground – Place pressure-treated post directly in earth.

Cost

Winner: Wood-In-Ground

• Cheapest upfront
• No concrete or steel bracket required
• Cast-In-Place is mid-range (~$150 per column)
• Perma-Column® is most expensive (~$200+), but saves labor time

Strength & Durability

Winner: Cast-In-Place

• Wood-in-ground can rot (10–40 years depending on climate)
• Perma-Columns® are factory-poured with reinforced concrete
• Cast-In-Place columns are integral with the footing and offer frost protection

Ease of Installation & Time

Winner: Cast-In-Place (if time is flexible)

• Wood-in-ground is fastest and simplest
• Cast-In-Place requires setup, pouring, and curing
• Perma-Columns® are very heavy, require lift equipment but no curing — can be installed in cold/wet weather

Conclusion

• Cast-In-Place is best all-around for strength, value, and long-term durability
• Perma-Column® is a solid option where access or climate limits wet concrete
• Wood-In-Ground is best for low-budget, short-term builds

Choose based on budget, location, and how long you want your building to last.