Home Additions in
Baltimore County

When your home no longer meets your needs but you love your neighborhood, a beautifully designed addition can make all the difference. From second-story additions in Towson to sunrooms in Catonsville and family room extensions in Pikesville, our experienced home addition contractors in Baltimore County design and build spaces that blend perfectly with your existing home. Trusted for over 60 years, Lynch Design | Build delivers the home additions Maryland homeowners depend on for comfort, beauty, and lasting value.

Award-Winning Home Addition Contractors in Maryland

As an award-winning Maryland home builder, we specialize in additions that seamlessly blend with your existing home, creating a natural, cohesive look. Our work has been recognized by the Maryland Building Industry Association’s Remodeling and Custom Building Awards of Excellence, earning top honors for both large-scale additions and detailed interior remodels.

Our leadership team holds certifications such as Certified Graduate Remodeler (CGR) and Certified Aging-in-Place Specialist (CAPS) — professional designations that reflect our dedication to craftsmanship, safety, and quality. With over six decades of experience, families across Baltimore County trust us to create seamless house additions that are as beautiful as they are functional.

inviting sun filled porch with warm wood ceiling and comfortable seating overlooking baltimore county homes

Home Addition Services in Baltimore County

bright modern bedroom addition with warm hardwood floors and large windows in baltimore county Maryland

Room Additions

Add bedrooms, bathrooms, or flexible living areas without leaving the neighborhood you love. Perfect for growing families, our home addition services increase your home’s comfort and functionality while enhancing its long-term value.

wide exterior view of a second story addition blending new living space with scenic baltimore county landscape

Second-Story Additions

Maximize your living space by building upward. Second-story additions are ideal for Baltimore County’s established neighborhoods, where expanding within your footprint isn’t always possible. Our design team ensures your new space aligns perfectly with your home’s original style and proportions.

beautifully remodeled kitchen with rich cabinetry bright countertops and ample seating throughout this baltimore county home

Kitchen & Family Room Extensions

Create open, welcoming areas that connect family and friends. Our home addition contractors design and build extensions that feel natural to your home’s layout, tailored for entertaining, relaxing, and daily living.

screened sunroom addition with tall supports and warm wood ceiling offering peaceful views in baltimore county Maryland

Sunrooms & Specialty Spaces

Bring natural light and year-round comfort to your home with a custom sunroom in Maryland. Whether for reading, entertaining, or enjoying morning coffee, our team designs bright, energy-efficient spaces that complement your home’s architecture.

picturesque in law suite addition featuring stone facade potted plants and warm architectural details in baltimore county

In-Law Apartments

Provide family members with private, independent living space through a custom in-law apartment. These additions include a bedroom, bathroom, kitchenette, and living area, perfect for multigenerational households. Whether attached or detached, these additions add comfort and property value.

elegant wine room with vaulted brick ceiling and custom racks transformed from a garage conversion in Maryland

Garage Conversions

Transform underutilized garage space into a fully functional living area, whether a guest suite, office, or rental unit. Our Baltimore County contractors for home additions ensure every conversion meets modern energy and design standards, blending seamlessly with your home.

Colorful bump out addition featuring patterned floors, bay windows, and built-in seating area

Bump-Outs

A bump-out addition is a small yet powerful way to gain extra space. Ideal for expanding a kitchen, bathroom, or nook, these cost-effective additions provide the extra square footage you need while maintaining your home’s charm.

peaceful three season room with warm wood ceiling skylights and forest views surrounding this baltimore county home

Three-Season Rooms

Enjoy the best of Baltimore County’s seasons with a custom three-season room. Filled with sunlight and designed for spring through fall comfort, these spaces provide the perfect retreat for dining, reading, or simply relaxing, without worrying about bugs or weather.

Why Homeowners Trust Us As Their Home Addition Contractor

Local expertise with Baltimore County zoning, permits, and neighborhood guidelines, making us one of the most trusted house addition contractors in the region.

Additions designed to seamlessly integrate with your home’s structure and character.

An award-winning reputation built on more than 60 years of family-owned excellence as a home addition contractor Maryland homeowners trust.

Transparent communication from consultation to completion, the reason so many searching for contractors for home additions choose our team.

Licensed, insured, and certified professionals with proven experience in sunrooms, second-story additions, and home additions in Towson, MD, and beyond.

With a reputation built on craftsmanship, communication, and care, Lynch Design | Build continues to be the home addition contractor Baltimore County families depend on to turn vision into reality.

luxurious home theater addition with tiered seating recessed lighting and a large projection screen in Baltimore county md

home remodeling roadmap of lynch design build

Our Proven Process for Successful Home Additions

We follow a proven design-build process to make every addition seamless, efficient, and stress-free:

Phase 1

Consultation & Planning

We take time to understand your goals, space needs, and style to shape a clear direction.

Phase 2

Design Phase

Our design team develops detailed plans that align with your vision and meet Baltimore County codes and neighborhood requirements.

Phase 3

Permits & Approvals

We manage all permits, inspections, and HOA submissions, ensuring compliance and keeping your project on track.

Phase 4

Construction

Our experienced builders execute your plans with precision, efficiency, and minimal disruption.

Phase 5

Final Walkthrough

We review every detail to guarantee your new addition meets expectations for both form and function.

House Additions Across Baltimore County

We proudly provide home addition services throughout Baltimore County, including Towson, Catonsville, Timonium, Lutherville, and beyond.

Our experienced team has completed house additions throughout:

Towson

Hunt Valley

Catonsville

Sparks

Timonium

Owings Mills

Pikesville

Dundalk

Lutherville

Essex

Cockeysville

Randallstown

Parkville

Reisterstown

elegant maryland kitchen extension with glass cabinetry dark countertops and a wall of windows bringing in natural light

House Additions Across Baltimore County

We proudly provide home addition services throughout Baltimore County, including Towson, Catonsville, Timonium, Lutherville, and beyond.

Our experienced team has completed house additions throughout:

Towson

Hunt Valley

Catonsville

Sparks

Timonium

Owings Mills

Pikesville

Dundalk

Lutherville

Essex

Cockeysville

Randallstown

Parkville

Reisterstown

Home Addition FAQs in Baltimore County

Do I need a permit for a home addition in Baltimore County?

Yes. Most additions require county permits. Our team manages every step, from application to inspection, ensuring your project stays compliant and efficient.

Can you match my home’s existing architectural style?

Do you handle both design and construction?

Can you build specialty spaces like in-law suites or sunrooms?

How long does a typical addition take?

Real Stories from Our Home Addition Clients

“Lynch Design built my amazing kitchen add-on! From consultation to planning and building, Lynch went the extra mile to make sure everything was done the right way and that we were happy. We have been spending most of the day in our wonderful new kitchen add on. Thank you Lynch Design!”

– Rommel Zara

“The time line of the job was posted to us before work began. Work started as scheduled and was completed according to the schedule. The workers were all very professional and respectful of our home. A days work was always completed with a cleanup of the site. The carpenter is an excellent craftsman. The tile man is an artist and did an excellent job on the tile floor and backsplashes. Our new kitchen blends well with our home. The project was finished on time. We are very happy with the finished product.”

– Alice Armour

“Lynch Design/Build constructed an in-law quarters addition to our 1932 stone house. Our goal was to have both the outside and interior of the addition reflect the quality and appearance of the original house. Their team got it and delivered just what we wanted.”

– Paul Wiedefeld

“We had a great experience with Lynch and will be happy to work with them again on future projects. They handled a full service design and build project - replacing a rotting deck with a gorgeous screened porch. We are so happy with the results! We basically spend all our time out there when the weather allows. It has been finished about 6 months now and we are still loving it and appreciate the quality workmanship.

From the beginning they were nothing but professional and courteous. I appreciated that they were patient with my design re-dos, flexible with working with our budget goals, and responsive and reliable. They always cleaned up their sites and kept things safe for my little kids and dog and somehow they managed to keep all the muddy footprints off our carpet. They didn’t hesitate to address any concerns that came up and remedy any issues. They definitely seemed to “get” the struggles of a busy family and worked around us effortlessly while minimizing disruption to our routines. Thanks guys!”

– Josh & Vicki Wolf

“Lynch construction did an amazing job on our house. We had a new living room, screened in porch, raised deck and storage space added onto our house. This was a huge project and we are very happy with the final result! Jerry was an excellent communicator and made sure we were aware of everything going on each day. Every contractor that came to our house was polite and professional. We would definitely hire them again for any projects in the future!”

– Courtney Lawrence