Home Additions in Katy.
Additions live or die on two details: how the new foundation is tied to the old one, and how the roofline meets the existing house. Get those right and the addition disappears into the home. Get them wrong and you see the seam from the street for the next thirty years.
Home Additions in Katy, Texas typically costs $325–$425 per square foot for living space, and $425–$525 per square foot when the addition includes a kitchen or bath, and takes 8–12 weeks of design and permitting, then 4–7 months on site. Novara Construction is a licensed, insured design-build contractor serving Katy, TX and surrounding Harris, Fort Bend & Waller Counties, handling design, permitting, and construction under one fixed-price contract.
$325–$425 per square foot for living space, and $425–$525 per square foot when the addition includes a kitchen or bath.
Greater Houston market ranges, not a quote. Your number depends on scope, finish level, and existing conditions.
8–12 weeks of design and permitting, then 4–7 months on site.
Permitting duration varies by jurisdiction — see below for who reviews work in Katy.
What's included
- Primary suite, family room, and second-story additions
- Matched foundation systems that move with the existing slab
- Roof tie-ins, siding, and brick matching so the addition reads original
- HVAC load recalculation and panel upgrades
- Setback, lot coverage, HOA, and deed restriction review before design
Katy homes
Most Katy homes we work on are 1995–2015 builder homes in master-planned communities: two-story plans with formal dining rooms nobody uses, closed-off kitchens, builder-grade cabinetry, and dated primary baths with garden tubs. The highest-return projects here are opening the kitchen to the family room, converting the garden tub into a walk-in wet room, and finishing out flex space or a game room above the garage.
We start with a survey and a setback, coverage, and deed restriction review, then design to what the lot actually allows, then handle permitting and any HOA or architectural committee submittal on your behalf.
Who reviews it
Depending on your address, permits run through the City of Katy, unincorporated Harris County, Fort Bend County, or Waller County — and most master-planned neighborhoods add an HOA architectural review on top of that. Novara prepares the drawings, submits the packet, and manages inspections so you are not chasing three agencies.
- Cinco Ranch
- Cross Creek Ranch
- Firethorne
- Grand Lakes
- Seven Meadows
- Old Katy
77449 · 77450 · 77493 · 77494
Not listed? Call and we'll confirm coverage for your address.
Katy questions
Will the addition crack where it meets the existing house?
Not if the foundation is designed for it. On Houston clay we specify a foundation system for the addition that is engineered to move with the existing slab, plus control joints where the structures meet.
How much can I add to my lot?
Lot coverage, setbacks, and in many Katy neighborhoods deed restrictions or an HOA architectural committee determine it. We check all of them before we draw anything.
Do you remodel homes in Cinco Ranch and Cross Creek Ranch?
Yes. We regularly work throughout Cinco Ranch, Cross Creek Ranch, Firethorne, Grand Lakes, Seven Meadows, and older Katy neighborhoods, and we handle the HOA architectural submittal for exterior work.
How long does a Katy kitchen remodel take?
A typical full kitchen remodel runs 8–12 weeks on site after design and permitting, which usually adds 4–6 weeks up front. Structural changes or custom cabinetry lead times can extend that.