Wondering whether adding space to your current home makes more sense than moving? Our design-build approach delivers room additions that feel like original construction, eliminating the mismatched materials and awkward transitions that plague traditional additions. With in-house architects, engineers, and builders working as one cohesive team, your expansion integrates flawlessly with your existing architecture—and typically costs 30-40% less than selling and buying larger.
A professionally designed room addition expands your living space while preserving the neighborhood, schools, and community you love. Unlike simple remodels that reorganize existing square footage, additions create entirely new rooms, whether that's a home office, guest suite, expanded kitchen, or primary bedroom retreat.
The challenge lies in seamless integration. Poorly executed additions announce themselves through mismatched siding, visible seams, temperature variations between old and new sections, or structural settling. Our design-build methodology solves these problems by coordinating architecture, engineering, and construction under one roof from day one.
Seven Custom Homes brings luxury custom home standards to every addition project throughout the Austin metro area. Our team evaluates your existing foundation and framing before designing your expansion, eliminating the costly surprises that emerge when architects and contractors work separately.
Transform unused space into a luxurious primary retreat with an ensuite bathroom, walk-in closet, and private sitting area. Our structural engineers evaluate your existing foundation's load-bearing capacity before designing upward or outward expansions, ensuring the addition integrates seamlessly with your home's original architecture.
Primary suite additions typically include spa-inspired bathrooms with dual vanities, freestanding soaking tubs, and frameless glass showers. We coordinate all mechanical systems—HVAC, plumbing, electrical—to ensure consistent comfort throughout your expanded home without temperature variations between old and new sections.
Building upward maximizes property value on smaller lots. Our design team matches rooflines, exterior materials, and architectural details so the addition appears original to the home's 1970s ranch, 1980s traditional, or contemporary design.
Ground-floor expansions provide aging-in-place accessibility without stairs. We extend your foundation using engineered pier systems that eliminate settling and cracking where new meets old.
Remote work demands dedicated professional space separate from household distractions. Our home office additions feature enhanced acoustics, abundant natural light, and dedicated electrical circuits for equipment—designed specifically for video conferencing and focused productivity.
Studio additions accommodate creative pursuits from art and music to crafts and hobbies. We incorporate specialized ventilation for painting, soundproofing for music, or workshop-grade electrical for equipment, tailoring each design to your specific creative needs.
Create independent living space for aging parents or visiting family with fully equipped guest suites featuring private entrances, kitchenettes, and accessible bathrooms. Our designers incorporate ADA-compliant features without institutional aesthetics—think curbless showers with elegant tile and grab bars that double as design elements.
Multi-generational additions provide privacy for extended families while maintaining connection to the main home. We balance autonomy with accessibility, creating spaces that feel welcoming rather than segregated.
Whether you need expanded living space or an entirely new custom home, Seven Custom Homes delivers comprehensive design-build solutions throughout the Austin metro area.
Partner with our design-build team to create a completely custom residence tailored to your lifestyle, from modern Hill Country estates to lakefront contemporary homes.
Already own the perfect property? We'll design and construct your dream home on your land, navigating site-specific challenges from terrain to utilities.
Our integrated approach combines architecture, engineering, and construction expertise, eliminating the delays and disputes of traditional design-then-bid projects.
Beyond room additions, we create whole-home expansions that seamlessly integrate new wings or entire second stories into your existing residence.
Transform your existing home's interior with comprehensive remodels that update finishes, reconfigure layouts, and modernize systems without adding square footage.
Extend your living space outdoors with covered patios, outdoor kitchens, pool houses, and resort-style amenities that take advantage of Central Texas weather.
Creating additional living space in your existing home requires trust, expertise, and seamless execution. Our clients throughout Greater Austin appreciate our design-build approach that eliminates the typical frustrations of addition projects.
Ready to expand your home with the same quality craftsmanship our clients trust? Join homeowners throughout Lakeway, The Hills, West Lake Hills, and beyond who chose Seven Custom Homes for additions that enhance both lifestyle and property value.
Additions that don't blend with your home's existing architecture destroy property value and create obvious "before and after" lines. We source matching siding, roofing, and trim materials—or carefully select complementary options that enhance your home's style rather than fighting it. Our design team studies your home's architectural details from window grid patterns to fascia profiles.
The most expensive addition mistakes happen underground. Inadequate foundation design causes settling where new meets old, creating cracks, stuck doors, and structural damage. Our structural engineers specify foundation systems—from reinforced concrete to helical pier arrays—based on soil conditions and existing foundation types, ensuring stable integration.
Homeowners frequently report additions that are cold in winter and hot in summer compared to the original home. This occurs when contractors don't properly integrate HVAC systems or use inferior insulation. We calculate thermal loads for your entire expanded home, sizing heating and cooling equipment appropriately and matching or exceeding existing insulation values.
Austin's permitting process requires coordination between multiple city departments—zoning, tree preservation, floodplain, transportation, and building technical review. Our team navigates these requirements daily, submitting complete applications that pass review efficiently rather than bouncing back with revision requests that delay timelines.
Unlike full home builds on vacant lots, additions require construction while you occupy the home. We establish clear staging areas, maintain access to essential rooms, and coordinate loud or disruptive work during agreed-upon hours. Many clients continue living normally in most of their homes throughout construction.
Traditional addition projects encounter expensive surprises when contractors discover existing conditions the architect didn't account for—undersized electrical panels, inadequate foundation depth, or hidden structural issues. Our design-build team investigates these factors before designing, incorporating realistic solutions into initial budgets rather than change orders.
Room addition costs typically range from $200-$350 per square foot depending on complexity and finishes. A 300-square-foot primary bedroom addition averages $60,000-$105,000, while a 500-square-foot second-story addition with a bathroom ranges from $100,000-$175,000. Design-build projects often cost less than traditional architect-then-contractor approaches because we eliminate redundant fees and change orders from poor coordination.
Most additions require 4-6 months total: 4-6 weeks for integrated design and engineering, 2-4 weeks for permitting, and 8-16 weeks for construction depending on size and complexity. Our design-build timeline typically runs 4-6 weeks faster than traditional approaches because we don't wait for separate architect approval before beginning structural engineering or permitting.
Most homeowners continue living in their homes during additions, though some choose temporary relocation during particularly disruptive phases. We establish clear construction boundaries, maintain access to essential rooms like kitchens and bathrooms, and coordinate loud work during agreed hours. Many clients report the process is more manageable than expected.
Our design team photographs and measures your home's architectural details—from siding profiles to window styles to roofline pitches. We source matching materials when possible or specify complementary options that enhance your home's character. Before construction begins, you'll review 3D renderings showing exactly how the addition integrates with your existing architecture.
Austin requires building permits for additions over 200 square feet, with additional review from departments including zoning, tree preservation (if trees 19" diameter exist), transportation (for driveway changes), floodplain (if applicable), and Austin Energy. We handle all permit applications and coordinate required inspections throughout construction.
Second-story additions are possible when your existing foundation and framing can support additional vertical loads. Our structural engineers evaluate your home's foundation type, wall framing, and soil conditions to determine feasibility. When strengthening is required, we incorporate foundation reinforcement or shear wall additions into the project design.
Our AI-powered project management system tracks budgets in real-time, flagging potential overages before they occur. Unlike contractors who wait to select materials mid-project, we finalize all finish selections during design, eliminating the "surprise" upgrades that inflate costs. Our design-build approach also prevents expensive changes when construction reveals architect oversights.
Well-designed additions typically add 50-80% of their cost to property value, with primary suite and kitchen expansions offering the strongest returns. The key is seamless integration—additions that look original to your home command premium value, while poorly matched additions can actually decrease marketability. Our design-build approach ensures additions enhance your home's appeal.
Yes, we complete room additions throughout Greater Austin including Lakeway, West Lake Hills, The Hills, Driftwood, Spicewood, Horseshoe Bay, and Port Aransas. Our team is familiar with each municipality's specific building codes, architectural review board requirements (where applicable), and site challenges like Hill Country terrain and lake proximity.
We design and construct all addition types: primary suites with ensuite bathrooms, home offices, guest suites, family room expansions, kitchen extensions, second-story additions, garage additions, and multi-generational living spaces. Our design-build approach adapts to your specific space needs and site constraints.