Expand Your Space and Equity
Custom Home Additions in East Tennessee
We build large-scale home additions that add space and increase equity—like garages, airplane hangars, barns, sunrooms, guest suites, and more. East Tennessee Contractors is a licensed mechanical and general contractor that employs several trades in-house. It’s how we eliminate delays, protect budgets, and minimize stress while upholding the highest standards of workmanship.
Unlimited Licensed General Contractors
East Tennessee Contractors manages every part of the custom home building process. Our customers are able to track progress, budgets, selections, and much more from the tips of their fingers during construction for peace of mind throughout the building process. We strive to honor Jesus Christ through our services, ours work, and our actions. With that being said, we pride ourselves in holding the highest standards to our projects.
Our Process for Custom Home Additions
Comprehensive In-House Construction Team
Our team is composed of construction managers, project managers, superintendents, designers, accountants, estimates, and tradesmen. We take all of our strengths and put them together to tackle each and every project. Our team is consistently adapting to give our customers the best product in the most cost effective way.
- Foundation, Concrete, and Framing In-House
- Licensed Mechanical Contractor
- In-House Steel Fabrication & PEMB Expertise
- Superior In-House Framing
- Durable Roofing Systems
- Energy-Efficient Windows
- Custom Cabinetry & Designer Finishes
- High-Efficiency HVAC
- Modern Plumbing & Electrical Systems
- Premium Insulation
- Built-In Luxury Finishes
- Daily Reporting
Advantages of In-House Steel Fabrication
With our own steel shop, East Tennessee Contractors designs, fabricates, and erects steel components in-house.
The result: stronger spans, faster schedules, and one warranty from a single accountable team. From multi-car garages to barndominiums, our steel delivers the strength and speed most contractors can’t match.
Pricing Guide for Large-Scale Home Additions
Plan on spending around $200 per heated square foot when budgeting your home expansion.
What Can Affect Home Expansion Costs:
- Ceiling height and roof complexity
- Interior finishes and fixtures
- Layout and square footage
- Specialty features or custom design elements
Large-Scale Home Addition Services
Multi-Car Garages & RV Carports
Secure, value-boosting storage for cars, RVs, boats, or hobby shops—attached or detached and finished to match your home.
Specialty Steel Storage Buildings
Engineered steel structures with wide clear spans and code-compliant doors for equipment, aviation, or agricultural use.
Luxury Barns & Barndominiums
Durable barns that pair high-end storage with custom living or event space, framed in timber or steel for style and strength.
Sunrooms & Four-Season Rooms
Bright glass enclosures with premium windows, HVAC integration, and custom millwork for year-round comfort.
Grand Decks, Porches & Outdoor Living Spaces
Expansive wrap-around decks, covered porches, and outdoor kitchens crafted in timber or steel for elevated al-fresco living.
Full-Scale Home Expansions & In-Law Suites
Significant heated square footage—guest suites, second stories, or wing additions—seamlessly integrated with your existing home.
You Need 2 of These 3 Things to Start Your Custom Home
How to Prepare for Your Home Expansion
Every custom project needs three things: plans, land, and funds. But you don’t need all three to get started. If you have two, we’ll help you with the third — whether that’s designing a buildable plan, finding the right property, or helping you define a clear, accurate budget. Wherever you’re starting from, we’ll meet you there.
PLANS
LAND
FUNDS
BUILDING A CUSTOM HOME
Frequently Asked Questions
What areas do you serve?
We complete residential and commercial projects across all of Tennessee—and take on select out-of-state builds depending on scope and location.
How Do You Ensure Projects Stay On Budget and On Schedule?
We manage all major trades in-house, which means fewer delays and tighter budget control. From day one, you’ll get a clear timeline and transparent cost estimate — and we provide consistent updates throughout the build to avoid surprises.
Can I Use My Own Plans or Ideas?
Absolutely. Whether you have blueprints or just a vision, we’ll help turn your ideas into a fully customized plan that fits your space, timeline, and budget.
How long does the build process take?
Typically a project 2,000 Sqft or less takes 4-6 months once we start construction. Projects larger than that vary between 6-12 months depending on how big, how intricate, and how the seasons treat us!
What Makes You Different From Other Contractors?
Unlike many contractors, our entire team is in-house — from framers and electricians to plumbers and project managers. That means fewer delays, more control, and consistent quality from start to finish.
Can I provide some of the materials or do some of the work myself?
Yes you can. The only catch to you doing some of the work yourself is that we will take that scope of work out of our warranty for any trades the customer self-performs.
What It's Like To Build With Us
Hear directly from Kris and Dewona Henderson about their experience working with East Tennessee Contractors. We believe building shouldn’t be complicated. This is what it looks like when one team handles your project from start to finish.
"We showed Alaz our floor plan and he replied, ‘Simple.’ We knew then ETC was the right choice. Kenny told us, ‘It’s your house, whatever makes you happy.’ Every aspect of working with ETC was easy and rewarding. We couldn’t be happier having ETC build our house."
⎯ Jeff S.
“ETC built our dream home in 2024!
Could not recommend a better company that is diligent in doing a first class job!
From the skilled labor to the owners each team member wanted to be the best and their work showed. God sure did bless us with them, great job!"
⎯ George H.
“Wow! How refreshing to do business with such a high quality contractor! During the process of building our addition - from beginning concept to finish - great care has been taken assuring that we were 100% satisfied. Without hesitation, I would recommend ETC.”
⎯ Debbie S.
Ready to Start Your Home Expansion?
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