Home additions, Dripping Springs, TX
RenovatePros builds home additions in Dripping Springs: new bedrooms, more living space and second stories. We do not post an addition price yet. You get a free consultation and an itemized quote. Here the septic system and the aquifer can decide how big an addition can be, so we check both first.
- 4.9 on Google 59 reviews
- Owner on site managing the crew
- Itemized quote every line, up front
Home additions in Dripping Springs: septic, aquifer and permits
Adding square feet is where Hill Country rules bite hardest. Here is what an addition runs into.
- In unincorporated Hays County, any addition past the home’s original square footage needs a county development permit.
- A septic system is sized to the home’s bedrooms and floor area. A bedroom addition may need a bigger system, and Hays County reviews your existing plans to decide.
- Much of the Dripping Springs ETJ sits over the Edwards Aquifer recharge zone. There, state rules call for at least one acre per home on septic, no septic tank within 50 feet of a recharge feature and no drain field within 150 feet.
- Building on the recharge or contributing zone falls under TCEQ’s Edwards Aquifer rules.
- Hays County has no zoning outside city limits and does not enforce deed restrictions. Your deed restrictions, on file with the Hays County Clerk, are the rule to check.
- Inside the city, outdoor lights on the new space fall under the dark sky lighting rule.
How we plan an addition here
First we find out who issues the permit and whether your lot is on the recharge zone. Then we look at the septic: where the tank and drain field are and how big the system is. A new bedroom can mean a bigger system, and the drain field needs room. Those answers shape where the addition can go.
Our in-house design team draws the addition to match the house. You get an itemized quote with every line, and the owner is on site managing the crew.
Home additions: the full service page
City of Dripping Springs, Hays County, TCEQ and Census pages, as researched 2026-10-15 and 2026-10-16. Rules change; we confirm them for your address.
What homeowners say
4.9 (59) Google reviews
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Top-notch quality and fantastic customer support. Five stars!
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The work was both high quality and affordable, and it was completed in a short amount of time.
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Great communication throughout the process. Highly recommended!
Home additions in Dripping Springs: questions we hear
Do I need a permit to add on to my house in Dripping Springs?
Yes, in most cases. In unincorporated Hays County, any addition past the original square footage needs a development permit. Inside the city, permits go through MyGovernmentOnline, and projects in the city and its ETJ get a planning review.
Will adding a bedroom mean a new septic system?
It can. Hays County sizes septic by bedrooms and floor area, and it reviews your existing plans to decide whether the system needs an upgrade.
What does the Edwards Aquifer have to do with my addition?
On the recharge zone, state rules set a one-acre minimum for a home on septic and keep the tank and drain field back from recharge features. That can limit where new rooms and a bigger drain field fit.
Is building up easier than building out?
Building up keeps the yard and drain field clear, but the house has to carry the new weight. Building out uses lot space the septic may need. We look at both with you.
More remodeling in Dripping Springs
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Kitchen remodeling in Dripping Springs
Posted estimates of about $15,000 to $100,000, by budget, midrange and premium.
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Bathroom remodeling in Dripping Springs
Septic, floodplain and permit checks done before the tile goes in.
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Whole-home renovation in Dripping Springs
Posted estimates of about $100,000 to $500,000, planned room by room.
Home additions in nearby towns
78737 and the Hill Country