Granny Flat Builders in Texas

Building a Granny Flat in Texas? We Make It Simple.

Whether it’s for an aging parent, a returning adult child, or extra rental income, a granny flat gives your family room to grow without the cost of moving. Tiny Home Builders Texas designs and builds custom granny flats across the entire state from permit to move-in day.

We’ve built this exact structure hundreds of times across Texas, and we know the codes, climate, and lot requirements that make or break a project. Licensed, insured, and backed by a structural warranty on every build.

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    Signs You Need a Granny Flat in Texas

    Not sure if a granny flat is the right move? Here’s how Texas homeowners usually know.

    Your Parent Needs Help, But Not a Nursing Home

    If mom or dad needs support but still values independence, a granny flat offers privacy with family close by without the cost of assisted living.

    Your Adult Child Is Moving Back Home

    A detached unit gives grown children their own space to land while they get back on their feet, without crowding the main house.

    You Want Rental Income From Unused Space

    A backyard granny flat can generate consistent rental income in high-demand Texas markets, often paying for itself over time.

    Don't Wait Lot and Permit Windows Shift

    Zoning rules and buildable lot space can change as cities update ADU ordinances. The sooner you plan, the more options you'll have.

    What Our Granny Flat Service Covers

    Every granny flat we build is fully custom, but most Texas projects fall into one of these approaches.

    Modern backyard ADU with wood siding, covered patio, and landscaped garden.

    Attached Granny Flats

    Built directly onto your existing home, sharing a wall or connecting hallway. Faster permitting in most cities and lower foundation costs, ideal for smaller lots needing an efficient addition.

    Modern two-story custom home with brick and wood exterior, metal roof, landscaped front yard, and attached garage.

    Detached Granny Flats

    A standalone structure in the backyard, offering the most privacy and independence. Best for aging parents or rental use where separation from the main house matters most.

    Modern ADU with wood siding, metal roof, landscaped front yard, and spacious driveway.

    Garage-Converted Granny Flats

    We transform an existing garage into a fully livable unit, reusing the existing foundation and framing. Often the fastest and most cost-effective path to a finished granny flat.

    Modern detached ADU with flat roof, glass railing, landscaped front yard, and paved walkway.

    Two-Story Granny Flats

    For smaller lots, we build vertically to maximize square footage without expanding the footprint. Delivers more living space while staying within lot coverage limits.

    Not sure which approach fits your lot and goals? We assess your property first and recommend only what fits no upsells.

    How Our Granny Flat Process Works

    01

    Site Visit & Feasibility Check

    We review your lot, local zoning, and goals to confirm what’s buildable. Call (832) 413-0726 to schedule.

    02

    Custom Design & Fixed Quote

    Our in-house team designs your layout and delivers a detailed, itemized price — no surprise costs.

    03

    Permitting & Construction

    We handle permit submission and manage the entire build with licensed, in-house crews.

    04

    Final Walkthrough & Warranty

    We walk the finished unit with you and back it with a structural workmanship warranty.

    Why Choose Us

    Why Texas Homeowners Choose Tiny Home Builders Texas

    Statewide Texas Expertise

    We've built granny flats from Austin to Houston to the Panhandle, navigating different city and county codes along the way.

    Transparent Fixed-Scope Pricing

    You get an itemized quote before signing anything — no vague estimates, no mid-build surprises.

    Permit & Zoning Guidance Included

    We handle the research and paperwork for your city's ADU rules so you don't hit a wall halfway through.

    Built Like a Real Home

    Full insulation, real foundations, and quality finishes — never a shed with a bed stuffed inside.

    COST / PRICING

    What Does a Granny Flat Cost in Texas?

    Granny flat costs vary significantly based on size, type, and finish level, so we give every client a real, itemized number before any work begins.

    Factors That Affect the Price

    Size (400–800 sq ft is typical), foundation type, attached vs. detached vs. garage conversion, and finish level (standard vs. premium) all affect your total. Most Texas granny flats range from $85,000–$180,000.

    How to Get an Accurate Quote

    The only way to know your real number is a site visit and design consultation. Call (832) 413-0726 for a free, no-obligation quote.

    Testimonials

    What Texas Homeowners Say About Our Granny Flats

    We needed space for my mother without putting her in assisted living. The detached unit they built feels like a real home, not an add-on.

    Patricia, Austin

    The garage conversion was faster and cheaper than I expected. Ten weeks and it's now a full rental unit

    Marcus, San Antonio

    Fixed pricing meant zero surprises. They handled every permit so I never had to deal with the city myself.

    Dana, Houston

    Common Questions About Granny Flats in Texas

    Most range from $85,000–$180,000 depending on size, type, and finishes. We provide exact quotes after a site visit.

    A Junior ADU is typically created within the existing home's footprint, while a granny flat is often a separate attached or detached structure. Learn more about Junior ADUs.

    Yes, nearly all Texas cities and counties require permits for granny flats. We handle this process for you.

    Most projects take 10–20 weeks from permit approval to move-in, depending on size and type.

    In most Texas cities, yes. Rules vary by municipality, and we'll confirm this during your feasibility check.

    They're similar, but a granny flat is typically designed as full-time independent living, while a guest house is often used part-time. Explore our Guest House builds.

    We specialize in this exact structure statewide, with transparent pricing, in-house design, and a structural warranty on every build.

    Free Quote

    Schedule Your Granny Flat Consultation in Texas Today

    Give your family the space they need, without the cost or stress of moving. Our team is ready to walk your property and give you a real number.

    Contact Tiny Home Builders Texas

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