Room Addition vs. Moving: The Real Cost Comparison

"Should we add on or just move?" is a math problem with a lot of feeling tied up in it. Let's start with the math.

The true cost of moving

The sticker price of the next house is only the beginning. Add agent commissions on the sale (typically 5 to 6% of your current home's value), closing costs, and moving expenses. The big one right now is trading your existing mortgage rate for today's. For many Lowcountry families, swapping a low locked-in rate for a current one adds hundreds of dollars a month for decades. Then add the intangibles: new schools, new commutes, leaving neighbors you like.

The true cost of adding on

An addition is real construction: foundation, framing, roof tie-in, systems, and finishes, plus planning and permitting. Costs go up with complexity. A bathroom inside the addition, structural changes to the existing house, and second-story work all move the number. Our Cost & Investment Guide breaks down the drivers, and yes, you'll live near construction for a few months.

The comparison that matters

Run this test: price the addition that fixes your actual problem (one more bedroom, a primary suite, a bigger gathering space). Then price the total cost of moving to a house that has it: commissions, closing, moving, and the monthly payment difference over five years. For homeowners who like their location and their rate, the addition wins that math more often than not.

When moving wins

If the house is wrong in three directions at once, if the lot can't legally take an addition, or if the neighborhood itself is the problem, you should move. We'll tell you honestly if your project is one of those cases.

See what a home addition includes, check whether your addition needs a permit, and if you're in Bluffton, request a consultation. The Cost & Budget FAQ covers how our pricing works.