What to Decide Before You Break Ground on a Custom Home

When people ask me which part of building a house takes longer than they expect, my answer is the foundation. From the road it can look like very little is happening for a while. That is the stage where the rest of the house gets decided, and it has to be right.

Here is why it takes the time it does, what has to be settled before we pour, and what can still change afterward.

Why the Foundation Takes the Longest

On our builds the foundation takes a couple of months. That covers clearing the lot, setting the forms and pouring the slab, and those steps are all linked together. If one of them is off, the next one inherits the problem.

You have to get it right. If you just throw it up and you don’t get it right, it can cause problems in every other phase of the build. Walls that sit on an uneven slab are out of plumb, doors and cabinets do not sit right, and tile shows every high and low spot. None of that can be fixed cheaply once the framing is up.

So a quiet couple of months at the start of a build is normal. It is time spent on the part of the house everything else stands on.

What Has to Be Decided Before the Pour

A lot of a house ends up inside the concrete, and that is what drives the decisions that cannot wait.

Plumbing Locations

If the house sits on a slab, the plumbing locations need to be solidified before the foundation is poured. You need to know where your pipes are going, because they are in your concrete. The drain lines for every toilet, shower, tub and sink are laid in the ground and the slab is poured around them.

That means the bathroom layout, the kitchen sink, the laundry room and any wet bar or outdoor kitchen plumbing all have to be final on paper first.

The Structure

Certain parts of a slab need to be reinforced more than others. Load-bearing walls, columns and heavy features like a stone fireplace put more weight on specific spots, and the foundation is engineered to carry it there. Once the steel is placed and the concrete is poured, that layout is set.

The Exterior

This is the one that surprises people. You have to have a pretty good indication of the way the house is going to look before we break ground. Whether it has brick, siding, stucco or a mix of them determines how the foundation is going to be poured.

Brick needs a ledge formed into the edge of the slab for the brick to rest on. Siding and stucco do not. If the exterior changes after the forms are set, the foundation no longer matches the house.

What Can Wait Until After the Pour

Slight modifications to the framing can be made afterward. Moving a non-structural wall a few inches or adjusting a closet is usually workable.

The keyword is slight. Anything that touches plumbing, structure or the exterior footprint is a decision for the plans, before anyone starts clearing the lot. Interior selections like flooring, cabinets, countertops and fixtures come later in the build and do not affect the foundation at all.

What This Means for Your Timeline

A typical build takes about 8 to 10 months for a home of a reasonable size, when permitting goes smoothly. Larger homes take longer. The foundation is a meaningful share of that time, and it is the part you least want to rush.

The best thing you can do to keep a build moving is to have the plan settled before construction starts. When the plumbing layout, the structure and the exterior are final, the foundation goes in once and goes in right.

For the full sequence, see our guide to how long it takes to build a custom home in Texas and the custom home building timeline, phase by phase. If you are still choosing a lot, our list of custom home building mistakes to avoid covers the land and site decisions that come before any of this.

Planning a Custom Home in DFW

We build custom homes across Dallas-Fort Worth. If you are working through your plans and want to know what needs to be final before your foundation, contact us and we will walk through it with you.