Add an Addition and Grow the Home You Love
With a thoughtfully designed addition, you can stay rooted and create space for the life you’re living now—and the one that’s still unfolding.
For many of our clients, an addition isn’t just about space. It’s about staying power.
It’s about walking your kids to the same school each morning. Watching the same maple outside your window blaze red in October. Waving to neighbors you’ve known for years.
With rising interest rates and housing costs, expanding your current home often makes more financial and emotional sense than relocating. But more importantly, it allows you to shape your space around your life—not the other way around.
At TDS Design Build, we don’t just build additions. We create long-term solutions that help you grow into your home, not out of it. Whether you’re making space for a new baby, a multigenerational household, or simply better day-to-day living, we’re here to guide you—with care, clarity, and expert design.
Types of Additions
One-Story Additions
Ground-level expansions, typically built on a new foundation
These additions integrate seamlessly with your current layout and provide versatile, accessible space. Ideal for single-floor living, aging in place, or simply opening up your main level.
Common uses for one-story additions:
- Expanded kitchen or dining area
- First-floor bedroom suite
- Family room or sunroom
- Accessible living upgrades
Two-Story Additions
New space added at both the first and second floors
Two-story additions offer transformative gains in square footage without sacrificing design cohesion. They’re especially useful when your lot is space‑constrained but you need significant square footage, or when you want to add a primary suite above new first‑floor living space to keep the layout cohesive.
Common uses for two-story additions:
- Kitchen or living space below, bedrooms or office above
- Large-scale family expansion
- Mudroom/entry below with a bedroom or suite above
Second-Floor Pop-Up Additions
A new second story built on top of a one-story home
Popular in neighborhoods where outward growth isn’t possible, pop-ups allow you to stay rooted while doubling your home’s livable space.
Common uses for pop-up additions:
- Add bedrooms, bathrooms, or flexible space upstairs
- Preserve yard and garden space
- Transform and modernize the home’s look and function
Additions Above Existing Spaces
New rooms built over garages, porches, or prior additions
These smaller-scale vertical additions are perfect for targeted upgrades—no major footprint changes required.
Common uses for additions above existing spaces:
- Bedroom or bonus room above a garage
- Dormers or flex space over a first-floor addition
- Dedicated office, guest suite, or hobby space
Choosing the Right Home Addition Approach for You
When homeowners in Madison think about expanding their living space, they’re often faced with a pivotal decision: should they build up or build out? Expanding your home is more than just adding square footage—it’s about continuing your family’s story in the home and neighborhood you already love.
Whether you’re adding more bedrooms, creating a home office, or expanding shared living space, the right addition can improve how your home functions day to day—and make it more valuable and enjoyable for years to come.
However, navigating these choices isn’t always straightforward. Partnering with an experienced general contractor like TDS Design Build—specialists in navigating Madison’s diverse neighborhoods and intricate building and zoning regulations—makes the process smoother, more enjoyable, and tailored exactly to your family’s unique vision.
Building Up vs. Building Out: How to Decide
Your goals, your lot, and your home’s existing structure all play a role in determining the best way to expand. Here’s a side-by-side look at common considerations.
Building Up
Pop-Ups & Additions Above Existing Spaces
Why it works:
- Keeps your yard intact—ideal for urban or compact lots
- Enhances views, light, and long-term property value
- Adds living space without affecting lot coverage
What to know:
- May require structural reinforcement
- Roof modifications can increase complexity
- Requires smart engineering and thoughtful permitting
Building Out
One-Story & Two-Story Additions
Why it works:
- Often simpler to design and construct
- Naturally connects to existing floor plan
- Great for first-floor living and accessibility
What to know:
- Uses more lot space
- Affects grading, drainage, and landscaping
- Subject to local zoning and setback limits
Making the Right Choice with TDS Design Build
At TDS Design Build, we understand that each home addition project is unique. Our experienced designers and craftspeople collaborate closely with homeowners, guiding them through the decision-making process with empathy, respect, and unmatched expertise.
We help you evaluate your home’s existing conditions, zoning considerations, and project budget to identify whether building up or out is the ideal solution for your family. With our transparent, defined design-build process, we ensure a seamless experience that respects your time, resources, and vision.
When you’re ready to explore the possibilities of expanding your home, trust TDS Design Build to create enduring, beautiful spaces perfectly designed for your lifestyle—today and for years to come.
Not interested in an addition?
Discover the possibilities of adding a beautifully crafted ADU, versatile Garage, or charming Carriage House right in your own yard. Explore TDS Design Build’s tailored outbuilding solutions and transform the home you love into the home you’ve always dreamed of.
Regent New Garage
The close-knit lots on the near west side give a great sense of community, but making adjustments to the small and often historically protected sites can be a challenge for builders. Hoping to design a new garage with their future home exterior updates in mind, the owners of this beautiful Wisconsin landmark home contacted TDS due to our reputation for working with historically sensitive homes.
Schenk-Atwood Accessory Dwelling Unit (ADU)
When David decided to add a garage to his backyard, he saw an opportunity to go beyond basic storage; he envisioned a true backyard retreat. TDS Design Build brought this vision to life with expert craftsmanship and precision finishing, creating a meticulously executed ADU. This purposeful addition not only provides additional living space but also increases the value of the property. It seamlessly combines a studio, office space, and garage, exemplifying the highest standards in new construction.
Oregon High Performance Home
Designed with the future in mind, this super energy efficient high performance home incorporates a 5.4KW photovoltaic solar system, passive solar orientation, double exterior walls and super thick levels of insulation. All materials were selected for their durability and non-toxic quality. Universal/aging-in-place design standards are infused throughout the home–including an elevator– which will provide a truly sustainable, safe, and healthy home for generations to come.
