Room
additions
By Bartona
Builders
When moving isn’t an option, a room addition is the perfect way to gain square footage without sacrificing the neighborhood you love. Whether you need more bedrooms, a home office, or a sunlit bonus room, Bartona Builders brings decades of design‑build expertise to every project.
We handle everything: from permits to the finishing touches; so you can expand your home with complete peace of mind.
Why Add a Bonus Room to your home?
– Growing Families & Multi‑Generational Living
Create dedicated space for kids, grandparents, or extended family members.
– Home Office or Studio Space
Design a distraction‑free workspace tailored to your productivity needs.
– Guest Bedrooms & In‑Law Suites
Offer comfort and privacy to visiting friends and relatives.
– Expanded Kitchens & Bathrooms
Seamlessly increase functional square footage where you need it most.
– Lifestyle Upgrades Without Relocating
Avoid the hassle and cost of moving by customizing your existing home.
The Value of a Home Addition:
Boosting Home Value
Improving Functionality & Layout
Energy-Efficient Upgrades
Creating Custom Gathering Spots
Types of Spare rooms We can Build
Bedroom Additions
Bathroom Additions
Family/Living Room Extensions
Home Office & Studio Rooms
Second‑Story Additions
Garage Conversions
Sunrooms & Bonus Rooms
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Design Considerations for Adding a multiuse room
Our Room Addition Process
Initial Call & Consultation
Discuss your goals, property layout, and budget—no obligation.
Design & Planning
Receive detailed floorplans, 3D renderings, material options, and a transparent estimate.
Build & Deliver
Our in‑house team manages construction, quality control, and finishing details with minimal disruption.
why homeowners choose bartona builders
Transparent pricing, no hidden fees & fast, reliable timelines
Full design‑build service under one roof
Over a century of combined home improvement experience
Top‑tier craftsmanship and 5‑star client satisfaction
Licensed, insured, and dedicated to your peace of mind
Full‑Service General Contractor with specialized room addition expertise
Cost of Adding a Room
| Addition Type | Typical Cost Range | Key Cost Drivers |
| First‑Floor Bedroom | $40,000 – $80,000 | Foundation work, roofing, footprint size |
| Second‑Story Addition | $80,000 – $150,000 | Structural reinforcement, roof integration |
| Bathroom Addition | $25,000 – $60,000 | Plumbing, fixtures, finishes |
| Garage Conversion | $20,000 – $50,000 | Electrical, insulation, door/windows |
| Sunroom / Bonus Room | $30,000 – $70,000 | Glass enclosure, HVAC integration |