If you’re researching primary suite addition costs specifically, our dedicated Southlake primary suite guide has real 2026 cost bands and the full ARB process for Carillon. This guide covers the other addition types we build most often in Southlake.
Sunroom or outdoor living addition (covered patio, outdoor kitchen, screened or glassed-in living space): $90,000–$250,000 illustratively, depending on whether it’s conditioned space, roofline complexity, and finish level. Southlake’s larger lots make these additions especially popular — they extend the home’s living space without touching the interior.
Second-story addition (new floor over existing footprint): $375,000–$700,000 and up. This is the most structurally involved addition type in any Southlake neighborhood — it requires a full engineering review of the existing foundation and framing, and in HOA-governed communities like Carillon, always triggers architectural review since it changes the home’s roofline and exterior massing.
Family room, kitchen, or garage extension (ground-floor square footage added to an existing wing): $150,000–$350,000, depending on size and whether it’s tied into an existing renovation.
If your addition changes the home’s exterior — which nearly all of the above do — expect an ARB submission if you’re in a governed neighborhood. Our primary suite guide walks through what that process looks like in Carillon specifically; the same general process applies to these other addition types. (Building in Vaquero? It’s technically part of Westlake — see our Westlake and Vaquero guide.)
Call Chad at 817-343-1752 or inquire at swansonrenovations.com/contact.
