Quality Lower-Level Renovations
Is your family outgrowing your home? Before you start house hunting, consider the hidden potential right where you are. A professionally finished basement can add significant value and versatility to your home, transforming an underutilized space into a vibrant lower-level living area.
At JJB, we specialize in turning dark and cold basements into our clients’ favorite spots in the house. Our expert team serves Milwaukee County, Waukesha County, Ozaukee County, Washington County, the North Shore, and surrounding areas, helping you create a lower level that you love.

Are you unsure what to do with your lower-level space?
Let JJB help you unlock the full potential of your home. Imagine the possibilities for your basement renovation:
Cozy Additional Bedrooms & Bathrooms
Private guest suites for family & friends
State-of-the-Art Home Theaters & Entertainment Rooms
Functional Work-from-Home Offices
Stylish Kitchenettes & Bars for Entertaining
Elegant wine cellars
Efficient Laundry & Storage Areas
Private Fitness or Yoga Studios
Inspirational Craft or Art Studios
Relaxing lounge or meditation spaces & More!
Why Choose JJB for Lower-Level Remodeling?
Experience the JJB Home difference in basement transformations! At JJB, we specialize in expert lower-level renovation services designed to turn your underutilized basement into a beautiful and functional living space. Our team of skilled craftsmen is committed to delivering outstanding results that not only enhance your basement’s appearance but also improve its efficiency and value.
We address all aspects of your lower level, from waterproofing and insulation to lighting and flooring, ensuring a cohesive and stylish design that meets your specific needs and preferences.
Want to create the extra space that everyone loves? Contact JJB today to learn more about our basement renovation services.
our Lower-Level Renovation Process
At JJB Home, we streamline your lower-level renovation with our experienced team. We will guide you through every step of the process, ensuring a smooth and stress-free renovation.
Step 1: Site Visit
During this meeting, we will discuss your project needs and goals, determine the project budget range, timeline, and review our Design Process. We will meet at your home to discuss your renovation goals. To take the next step to get a proposed design concept, a Design Contract would be signed with a deposit typically ranging from $1,500-$5,000 depending on scope of the project.
Step 2: Site Measure
Once the Design Contract is signed, we will return to laser measure the space, take pictures of the existing conditions, and take any additional notes needed to start designing. Our focus is to create a design within the budget that was agreed upon in the Design Contract.
Step 3: Design Reveal
Here comes the exciting part. Within as little as 2 weeks, we’ll have another in-person meeting to share your new basement design! At this appointment, we’ll review the concept in size and scope. You’ll see realistic 3D visuals of the space from different perspectives. We’ll send you home with hard copies as well as digital copies of the plans – including the existing space, a new dimensioned floor plan, and 2-4 renderings. At this time we’ll also go over a detailed estimate outlining the labor and materials needed to bring the vision to life.
Step 4: Build Commitment
After the Design Reveal, you’ll have the opportunity to sign for the project. This is the time to make any adjustments to the scope of work and design. A final contract reflecting any price adjustments is sent to be reviewed and signed. At the time of signing, we’ll require a downpayment to secure your project dates and move forward with Material Selection.
Step 5: Material Selection
Before we can move forward with construction, we’ll finalize the design aspect of the project. You will work with a designer who will help guide you to select any necessary finishes such as tile, faucets, and cabinets. Once all selections are made, a LookBook is created to review and sign. This will also help us complete your construction documents so that we can ensure all the parts and pieces fit together.
Step 6: Pre-Walkthrough
After the permits are pulled, materials are chosen, and the construction documents are completed, we’ll perform a Pre-Project Walkthrough with any subcontractors for your project. JJB performs much of the trade work in-house, but for trades like plumbing and electrical, we walk the space with your plans in hand to make sure all the experts get eyes on the scope.
Step 7: Construction
Your dedicated Project Manager and Lead Carpenter take over your project from here — our team performs a seamless handoff with construction documents, materials, and subcontractors in tow so that the project is as least disruptive as possible. At this point, we’ll provide you with a “Milestone Calendar” which will guide you through the stages of your project, with completion deadlines and a payment schedule. We complete your project as quickly and efficiently as possible – saving you time, money, and headaches.

How to Finance Your New basement

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Benefits of Basement Renovations
When it comes to loving your home, lower levels provide the perfect space to dedicate areas that reflect your passions. Whether it’s a charming wine cellar to show off your rare wine collection, or an inspirational crafting room to grow your side business, the opportunities are endless. Taking advantage of unused square footage not only improves the functionality of your home but also gives you a space for your passions to grow.
1. Additional Living Space
2. Increase Equity In Your Home
Adding a bedroom or bathroom to your basement can significantly boost your home’s value, often offering a 70-100% return on investment.
3. Enhance Comfort
Say goodbye to dark, cold spaces– and hello to warmth and light in your lower level for a more inviting atmosphere.
4. Entertainment & Recreation
Design a space that reflects your passions and promotes spending time with your loved ones.
Basement Gallery
Client Reviews
Basement Remodeling FAQs
Can you add a bathroom to a basement renovation?
What can I do with an unfinished or underused basement?
A lot more than storage. We regularly transform basements into rec rooms, home theaters, guest suites, home gyms, or entertainment hubs — whatever your household needs most. If you can imagine it, we can likely help build it.
You can learn more by clicking our Basement Renovation page.
See pictures of our basement renovation projects on the Our Work page.
How much does it cost to finish a basement?
Basement finishing costs in Milwaukee range from $55,000–$70,000 for a basic rec room finish, to $100,000–$115,000 with a bathroom added, to $160,000–$195,000+ for a full multi-room design-build buildout. Basement finishing is widely considered the highest ROI remodeling investment.
You can also click on our Design-Build Remodeling Estimator page to get an honest cost range in seconds.