Deck Extension Services in Oakland & Livingston Counties
Expand your outdoor living space with a custom deck extension from Mitten Made Basements. Whether you’re adding a wrap-around seating area, bump-out for an outdoor dining deck, or a multi-level expansion, our fully insured team handles everything—from design and permitting through foundation work and finishing touches. Backed by transparent pricing, a one-year labor warranty, and a 10% veterans’ discount, we’ll create an extension that feels like it was always part of your home.
Proudly serving both residential and commercial clients throughout Oakland & Livingston counties (plus communities within a 30-mile radius of New Hudson), we combine over 20 years of local expertise, premium materials (including Trex® composite decking), and clear communication to deliver a seamless addition you’ll love for years.
Our Deck Extension Offerings
Foundation & Framing Upgrades
A stable base is the key to a lasting extension. We install properly sized footings—concrete piers or helical piles based on soil conditions—then frame the new section with pressure-treated lumber and engineered hardware to match your existing deck’s structural integrity.
Engineered footings: piers or piles
Ledger board flashing and moisture protection
Joist and beam alignment for level integration
Corrosion-resistant connectors and fasteners
Seamless Material Integration
Whether you choose Trex® composite, exotic hardwood or pressure-treated boards, our craftsmen match new decking and railings to your current style—ensuring a cohesive look. We install each board with precision, using hidden-fastener systems or stainless-steel screws for a clean finish.
Trex® composite boards in multiple profiles
Exotic hardwoods (IPE, Tigerwood) for natural warmth
Pressure-treated wood with optional capstock
Matching railing systems and trim details
Design & Feature Enhancements
Elevate your extension with built-in benches, planter boxes, integrated lighting conduits, or pergola attachments. Our in-house designers will create 3D renderings so you can preview features like built-in seating, shade structures, or cable rail systems before construction begins.
Custom seating walls and planter bases
LED or low-voltage lighting integration
Cable, aluminum or wood railing upgrades
Pergola and trellis tie-ins
Surface Prep, Sealing & Finishes
Protect your new extension from Michigan’s freeze-thaw cycles with professional washing, staining or sealing services. We prep surfaces by power-washing and stripping any old coatings, then apply premium sealers or stains—custom-tinted if desired—to ensure long-lasting color and protection.
Power-washing and old-finish removal
UV-inhibiting stains and clear sealers
Non-slip finish options for safety
Annual maintenance and resealing plans
From Concept to Completion: Our 4-Step Deck Extension Process
01
Personalized Site Assessment & Design
We begin with an on-site evaluation to measure your existing deck, assess soil and grading conditions, and discuss your expansion goals. Our designers then provide detailed plans and 3D renderings—complete with material and feature options—for your approval.
02
Permitting & Site Preparation
Our permit specialists secure all necessary county approvals in Oakland & Livingston counties. Meanwhile, the crew protects landscaping, sets up dust barriers, and grades the site to prepare for new foundation work.
03
Structural Construction & Decking Installation
Licensed carpenters install footings and frame the extension to engineered specifications. We then install your chosen decking material—Trex®, hardwood, or wood—ensuring seamless alignment and secure fastening to your existing structure.
04
Final Walkthrough & Ongoing Care
Before we wrap up, you’ll join us for a detailed walkthrough to confirm every detail meets your expectations. We’ll provide maintenance tips, a one-year labor warranty, and optional seasonal care plans to keep your new deck extension in peak condition.
Why Choose Mitten Made Basements for Deck Extensions?
Deep Local Expertise
With over 20 years in Southeast Michigan, we understand county codes, soil types and weather patterns—ensuring your extension is designed for lasting performance.
Premium Materials & Flawless Craftsmanship
Our partnerships with Trex® and other top suppliers, combined with skilled carpenters, deliver decks that resist rot, fading and warping—minimizing upkeep and maximizing enjoyment.
Cohesive Design & Perfect Match
We tailor every detail—decking, railings, trim and features—to match your existing deck, creating a seamless addition that looks as though it was always there.
Transparent Communication & Guarantee
From a clear, itemized estimate to regular progress updates, you’ll always know where your project stands. Fully insured and backed by our one-year labor warranty (plus a 10% veterans’ discount), we protect your investment every step of the way.
Brian and his team did a great job with our bathroom renovation. We had to get creative with our small space and they were able to make it work in a short amount of time. Would definitely recommend!
Lauren Gron
Mitten made basements completed a kitchen, dinning room and hard wood remodel for me. Brian’s team was worderful to work with. Everyday Brian was communicating with me. We had trouble with the cabinets and Brian did everything to rectify the problem. I can’t say enough of how proud I am to show off the work he and his team completed .
Susan Kroll
Our Deck needed repair and updating, contacted Mitten Made Basements. They removed the old deck and put in brand new deck all in 3 days. Mitten Made Basements is great too work with even when we added extra features at last minute. We asked them to work on our bathroom, and did another great job!
Dennis Lipski
After getting several quotes on completely finishing our basement, Brian was very competitive in winning our business. He succeeded, and we couldn’t be happier with our choice. He set proper expectations and timelines, and all the different trade teams and all employees that had a part of the construction were extremely polite and hard working. Our project manager, Steve was here, working hard almost every day and sometimes the only person here getting the work done. At the end, we are just so incredibly happy with how our basement turned out, and we would highly recommend Mitten Made!
Rosanna Cummins
I’ve had many different contractors in my home over the years and this was by far my best experience! Mitten Made basements created a beautiful bathroom addition onto my home. I immediately felt Comfortable with Brian,, the owner, upon meeting him and discussing the job. This is a small company, including Tom and Liam whose work is superb! Subcontractors, Marcus and Tom are also amazing. I couldn’t be happier with the outcome And completely trusted them in my home. Special thank you to Mary, for helping me create this masterpiece.
Anna Koingsberg
Amazing work! We have had two large home projects completed by Brian and his crew. We highly recommend Mitten Made Basements LLC.
Franci DeCoe
Frequently Asked Questions (FAQ)
How long does a deck extension project take?
Most extensions complete in 3–6 weeks, depending on size, features, and permitting timelines. You’ll receive a customized schedule at your consultation.
Will I need a permit for my deck extension?
Yes—adding deck area requires permits in Oakland & Livingston counties. We manage all applications, inspections and code compliance to keep your project on track.
How do you ensure the extension matches my existing deck?
During design, we photograph and measure your current deck, then source matching materials and profiles. Our carpenters use precision alignment techniques to ensure boards, railings and trim flow seamlessly.
What maintenance does a deck extension require?
Composite decks need an annual wash with mild soap and water, while wood boards should be resealed or stained every 2–3 years. We offer tailored maintenance plans to keep your extension looking its best.
Do you offer warranties on deck extensions?
Absolutely. All work is covered by our one-year labor warranty, plus the manufacturer’s warranty on materials like Trex®. We also offer optional seasonal service plans to extend longevity.