Home Additions in Collegeville, PA
Our Services
Home Additions
Custom Home Expansions
Basement Finishing
Creating functional living spaces
Bathroom Renovations
Bathroom updates and remodels
Contact Us for a Consultation
A Local Home Addition Contractor for Collegeville Homes
Collegeville homeowners often reach a point where the location still works, but the house no longer fits the way the family lives. Maybe the kitchen feels too tight, the garage is not large enough, or the home needs more space for guests, aging parents, work, or everyday living.
We help homeowners in Collegeville and nearby areas plan home additions that fit the existing structure, lot, and long term use of the home. From older raised ranches and split-levels to colonials and newer homes, a good addition should solve the space problem while still looking like it belongs.
Collegeville Home Addition Planning Costs
| Project Type | Planning Cost |
|---|---|
| Family Room Addition | $75k to $225k+ |
| Bedroom Addition | $75k to $300k+ |
| In Law Suite Addition | $150k to $450k+ |
| Second Story Addition | $185k to $600k+ |
| Garage Addition | $135k to $400k+ |
General Collegeville home addition planning costs only. Final cost depends on size, structure, foundation work, rooflines, finishes, utilities, permits, township requirements, and site conditions.
Home Addition Planning in Collegeville, Trappe, and Upper & Lower Providence
In nearby areas like Upper and Lower Providence, Perkiomen, Skippack and Worcester Townships; and the Route 422 corridor, township requirements and property layouts can vary from one home to the next. That is why the planning stage is so important. The goal is to understand what is realistic before you spend time and money on drawings, selections, or a scope that may need to be changed later.
Merman Construction brings local experience to that process. We help homeowners think through the practical questions first: where the addition should go, how it will be accessed, whether it needs plumbing or HVAC changes, how the exterior will match, and what details may affect cost.
Types of Home Additions We Build in Collegeville
Every addition should be planned around the home, not forced into a generic design. These are some of the most common home addition projects Collegeville area homeowners ask us about.
Family Room Additions
A family room addition gives your home more everyday living space for relaxing, entertaining, and spending time together. These additions are popular in Collegeville homes where the kitchen, dining area, and living room feel disconnected or too small for the way the family actually uses the house.
Bedroom Additions
A bedroom addition can create needed space for a growing family, guests, aging parents, or a more private primary suite. Planning should account for layout, privacy, closet space, natural light, and how the new bedroom connects to the rest of the home.
In Law Suite Additions
An in law suite addition can create private, comfortable space for aging parents, extended family, guests, or future flexible use. These additions may include a bedroom, bathroom, sitting area, storage, or kitchenette depending on the layout and local requirements.
Second Story Additions
A second story addition can add significant square footage without taking up more yard space. These projects require careful planning around structural support, roof changes, stair placement, engineering, and the condition of the existing foundation and framing.
Screened In Porch Additions
A screened in porch addition creates a protected outdoor living space for relaxing, dining, and entertaining. It gives you more usable space while helping shield the area from bugs, weather, direct sun, and the exposure of a fully open deck or patio.
Garage Additions
A garage addition can add parking, storage, workshop space, or finished living area. Merman Construction builds attached and detached garage additions depending on the property layout, township requirements, driveway access, roofline, drainage, and how the new structure will fit with the existing home.
Years Established
Completed Projects
Merman Construction's Quality Commitment
As a small family-owned business, Merman Construction takes pride in helping Montgomery and Chester County homeowners transform their spaces with additions and home remodeling projects. Steve Merman and his team treat every project like their own, bringing trusted craftsmanship, integrity, and careful attention to every detail.
Select one of the services below to learn more.
Home Additions
Primary suites, in-law suites, garages, and custom expansions for homes across Montgomery and Chester Counties. We use materials like Aquaguard® performance laminate flooring and engineered structural framing to ensure safe, long-lasting additions.
Stucco Remediation
Full removal and repair with James Hardie® siding, stone, or vinyl replacement to protect your exterior. We use Benjamin Opdyke HydroGap® drainable house wrap and HydroFlash® GP.
Windows & Doors
Energy efficient window replacements and premium entry doors that improve comfort, security, and home value. Brands such as ViWinco® Windows and Reeb® Doors are used.
Basements
Entertainment rooms, home gyms, playrooms, or in-law apartments, tailored to your property. Quality materials such as Diamond Cabinets and Sherwin-Williams paint.
Siding & Exterior
Expert installation of James Hardie® fiber cement siding and Certainteed® vinyl siding to boost curb appeal and weather resistance.
Deck Installation
Built with Trex® and AZEK® composite materials for long lasting decks, porches, and pergolas.
Built on 20+ Years of Hands-On Building Experience
A home addition has to do more than add square footage. It needs to connect properly to the existing structure, match the roofline, manage water correctly, and meet local township requirements.
Steve Merman began his career as a professional framer, building homes and residential developments throughout the region. Today, he brings that structural knowledge to additions across Collegeville, Trappe, Upper Providence, and nearby Montgomery County communities.
Merman Construction is a small, family-owned company where Steve is personally involved on site and Jana helps keep documentation, scheduling, and permit coordination organized.
Framing & Structural Experience
Steve’s background helps guide how additions tie into existing homes.
Owner-Supervised Projects
Steve is personally involved on site, checking details and coordinating the work.
Local Permit Support
We help coordinate permits, inspections, documentation, and scheduling.
Collegeville-Area Experience
Our portfolio includes home addition work in Collegeville and nearby communities.
Exterior Details Matter
Rooflines, siding, windows, trim, drainage, and water management are planned carefully.
Respectful Job Sites
We understand that we are working in and around your home.
Call For a Quote:
(610) 489-4132
Let’s Build Something Together
Our family-owned remodeling company takes pride in traditional craftsmanship while applying modern building practices. Every project is built with precision, care, and long-lasting results.
Frequently Asked Questions about Home Additions
We know adding onto your home raises a lot of questions about cost, permits, timelines, and materials. Here are answers to the ones we hear most often from homeowners in Collegeville and Montgomery County.
What should I gather before contacting a contractor?
Start with your property address, a few exterior photos, interior photos near the planned addition area, a short list of must-haves, and a general budget range. This helps us understand the home, lot, access points, and likely complexity before the first conversation.
Can you work with my architect's plans?
Absolutely. We frequently collaborate with local architects to ensure their designs are built exactly as intended.
Is it better to build up or build out?
It depends on the home and lot. Building out may be simpler if there is enough yard space and the foundation work is straightforward. Building up can make sense when the lot is tight, but it often requires more structural review, stair planning, roof changes, and engineering.
Can you make the home addition look like it belongs on my house?
That should always be the goal. A well-planned addition needs to consider rooflines, siding, windows, trim, drainage, foundation work, and interior transitions so the new space feels connected to the original home instead of tacked on later.
How long does a home addition project take?
Most additions take between 10 and 14 weeks depending on size, complexity, and weather. We create a clear schedule before starting and communicate progress every week so there are no surprises.
Do you offer design services or just construction?
We’re a construction-first company that partners with architects for design. This gives homeowners flexibility, whether you already have plans or need an introduction to one of our trusted architectural partners.
How much does a home addition cost in Collegeville, PA?
Home addition costs in Collegeville vary widely based on size, foundation work, rooflines, structural changes, utilities, finishes, and township requirements. Smaller additions may start around $75,000, while larger family room additions, in-law suites, garage additions, or second-story additions can reach $225,000 to $600,000+ depending on the scope.
Can Merman Construction help before I have architectural drawings?
Yes. Many homeowners start with an idea but are not sure what is realistic. We can talk through your goals, property layout, budget range, and likely project complexity before you invest heavily in drawings or selections.
Customer Testimonials
“10/10 experience, with now a days prices Jana and Steve got us a GREAT and super competitive price! Not only was the price good, but the service to match it was better. Steve is SUPER diligent, master of his craft. Was able to analyze the scope of the project and the small intricacies from day one. Jana was super on top of it with telling us where we are at through the whole process and providing us interactive models of the extension AS it is being built. If you’re in the Chester county area I can’t see any other option than Merman!”
“I had an outstanding experience working with Steve and his team at Merman Construction. Their attention to detail is truly impressive—every part of the project was handled with care and precision, and the final results exceeded my expectations.
Steve is incredibly easy to work with. He communicates clearly, listens to what you want, and offers helpful suggestions without ever being pushy. His professionalism made the entire process smooth and stress-free.
The team was punctual, reliable, and consistently respectful of both my time and my home. Every day they showed up exactly when they said they would and kept the project moving efficiently.
I highly recommend Merman Construction. Steve and his team deliver excellent craftsmanship, outstanding service, and an overall experience that’s hard to find. I couldn’t be happier with the work they did.”
“Merman Construction completed a large construction project for us in 2024. The project consisted of a 28×30 garage addition as well as a renovation of the existing garage space to a mudroom and new laundry room. Steve and his team are true professionals and executed above all expectations. The entire process was handled professionally with attention to detail. Everything from Permits, drawings, material ordering, to execution on construction were handled amazingly. It was also refreshing to work with a contractor who didn’t always tell me what I wanted to hear. Steve offered constructive challenges to design ideas based on what he had seen work or not work in the past, as well as was openly honest when things just weren’t feasible. He treated our project as if it were for his own home. All change orders were clearly communicated and documented to minimize any confusion. I would absolutely recommend Steve and his team for any project big or small and we will use him in the future for sure.”
Contact Form
Complete this form to schedule an appointment or consultation.
Expert Home Remodeling
Merman Construction Inc. 10 Medway Circle, Collegeville, PA 19426
610-489-4132
For 20 years Merman Construction has been located in Montgomery County building high quality home additions in Collegeville, PA and the surrounding areas.
