Milwaukee Home Additions Contractor
We handle permits, planning, and construction, so you can focus on enjoying the extra space you need.
Home Additions starting at $150K+ | Timeline: 12 – 15 weeks
Custom Home Additions That Grow With You
Need more space for your growing home needs? A home addition is more than just adding square footage— it’s about enhancing your lifestyle, increasing your home’s value, and creating a home that you truly love!
At JJB Home Improvements, we specialize in expert home additions, new construction projects, and design-build consultation services. Our licensed team of designers and craftsmen are committed to delivering results that exceed your standards. Whether you’re adding a primary suite, expanding your kitchen, or building up with a second story, JJB Home Improvements transforms your vision into reality.
Ready to transform your home? Please reach out to learn more about our home addition services or request a free quote to jump-start your project.
We also provide residential remodeling of kitchens, bathrooms, basements, decks, attic conversions (dormer), and garages.
See How We’ve Transformed Homes Like Yours
Common Milwaukee Home Addition Projects We Build
Full Home Additions
Add 400-800+ square feet of living space. Perfect for expanding living rooms, adding family rooms, or creating the space your growing family needs.
Second-Story Additions
Build up to maximize your lot. Add bedrooms, bathrooms, or a complete primary suite without sacrificing yard space.
Primary Suite Additions
Create your private retreat with a spacious bedroom, luxury bathroom, walk-in closet, and separation from the rest of the household.
In-Law/Guest Suites & ADUs
Self-contained living quarters with a kitchenette, a full bathroom, and a separate entrance. Ideal for aging parents, adult children, or rental income.
Garage Additions
Attached or detached garages with optional bonus room or apartment space above. Gain storage, workshop space, and home value.
Kitchen & Room Expansions
Extend existing rooms by 8-15 feet to transform cramped kitchens, dining rooms, or living spaces into functional areas your family actually enjoys.
Home Office Additions
Purpose-built workspace with proper insulation, soundproofing, and dedicated utilities—designed for focus and productivity.
Our Home Addition Process: Step-by-Step
Step 1: Visit Site
Step 2: Design Concept Including Architecture & Engineering
Step 3: Design Reveal
Here comes the exciting part. Within as little as 4 weeks, we’ll have an in-person meeting to share your new addition / custom new construction 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. At the time of signing, we’ll require a downpayment to secure your project dates and begin Material Selection.
Step 5: Material Selection
Before we can give the go-ahead for construction, we’ll finalize the design aspect of the project. With the help of a personalized Lookbook and our material library, you’ll choose finishes such as tile, faucets, and cabinets. 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.
Why Choose JJB for Your Milwaukee Home Addition?
With over 30 years of experience and a complete in-house team, we make the addition process straightforward and stress-free. We’ve spent the time building local relationships and earning the trust of homeowners across Southeast Wisconsin.
Licensed & Lead-Safe Certified
Fully Insured & Bonded
Award-Winning Reputation
Professionally Connected
Proud members of the Glendale Chamber of Commerce, the Better Business Bureau, NARI, and the Metropolitan Builders Association, with verified DUNS registration for commercial credibility.
Finance Your Home Addition Project
Get a Free Design-Build Estimate
Ready to Add the Space You Need?
Whether you’re ready to request a free quote or just exploring possibilities, we’re here to help. Contact JJB Home Improvements today to discuss your Milwaukee home addition project.
Client Reviews
Home Additions FAQs
How much does a home addition cost?
Milwaukee home additions cost $100k–$175k+ for standard-grade construction, $150k–$200k+ for premium, and $175k–$300k+ for luxury. These are all-in costs, including design, foundation, framing, roofing, electrical, plumbing, insulation, drywall, flooring, and interior finish. A bedroom addition typically runs $100,000–$250,000, depending on tier — entry $100K–$175K, mid-range $175K–$200K, premium $200K–$250K. A primary suite (bed + bath) starts at $150,000–$200,000 at the entry level.
You can learn more by clicking our Home Additions page.
You can also click on our Design-Build Remodeling Estimator page to get an honest cost range in seconds.
Is it cheaper to add an addition or build up?
How long does a home addition take?
Most home additions take 12–15 weeks from the start of construction to completion. Smaller or single-room additions tend to land toward the shorter end of that range, while second-story additions and larger builds run longer. Once we understand your project’s scope, we’ll provide a detailed week-by-week timeline.