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Location and Projects

Address
303 W Lancaster Ave, Wayne, PA, 19087
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Monahan Design Build Construction

Dreaming of a Custom Home? You've Found Your Builder!

Welcome to Monahan Design Build, where your dream home becomes a reality. Since 1992, we've been the go-to custom design and build experts for Philadelphia, the Main Line, and beyond.

Why Choose Us?
Personalized Design: Our founder, Michael Monahan, leads with a passion for crafting spaces that echo your personality and lifestyle.
Full-Service Expertise: From site design to final interior touches, our skilled team covers it all, with our own in-house interior designer to perfect your vision.
Client-Centric Approach: We work hand-in-hand with you from start to finish, ensuring your vision is not just met but exceeded.
Award-Winning Quality: Voted "Best of the Main Line" for six consecutive years, our work speaks for itself.

Our Services Include:
Custom Home Building
Home Renovations
Additions

Ready to Begin?
Contact us for a free consultation and estimate. Let Michael Monahan and the Monahan Design Build team help you build your dream home with custom design.

Monahan Design Build - Bringing Your Dreams to Life

Also we welcome investors to partner with us in upcoming custom home and condo projects along the Mainline and Philadelphia.

Our Services Include
Design Build // Custom Homes // Additions // Renovations
Investor Realestate Opportunities

From BuildZoom:

Their BuildZoom score of 133 ranks in the top 1% of 125,106 Pennsylvania licensed contractors.

If you are thinking of hiring Monahan Design Build, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

Monahan Design Build Contact Information

Phone: (610) 349-6624
Address: 303 W Lancaster Ave, Wayne, PA 19087

Monahan Design Build Wayne

Quality

133
99th percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Monahan Design Build has a BuildZoom score of 133, which places them above 99% of 125,106 contractors in Pennsylvania.

Activity

2 projects
2023
Our building permit records indicate that Monahan Design Build has worked on at least 2.0 projects over the past 3 years.

This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.

Pricing

1 project
$100k-$250k
1 project
$1mil+
Value Not Public: 0 projects
Pro tip: For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.

Monahan Design Build Reviews
5 out of 5 stars, based on 11 reviews

  • By David M.
    June 21, 2025
    You know. You recommended him to us. Build an addition
    $208,000

    A THIEF.
    You MUST avoid Michael Monahan, aka Michael Monaghan, like the plague. The positive reviews are stale and DO NOT reflect the deceitful and criminal manner in which he conducts "business" today. We paid in excess of $100k (just under 50%) of the estimated cost for an addition to our house before he left us high and dry with only about 10% of the work completed. Bounced checks to our Township for permits, didn't pay subcontractors, barely met with us during the short time he acted like he was going to have our addition built instead of simply RIPPING us off. Do your homework and look deeply into the background of this thief. Including us, there's at least three other clients suing him in civil court and two of those clients are out a total of approximately $1million dollars. Don't be fooled by my rating. It's less than ZERO.

  • By Shannon
    September 13, 2024
    New Home
    $1,589,202

    We recently had the pleasure of working with Michael Monahan and his team at Monahan Design Build, along with Ingruids Designs, for the construction and interior design of our new home. From the very beginning, Michael and his wife demonstrated an unparalleled commitment to craftsmanship, creativity, and customer satisfaction that truly set them apart.

    The process began with Michael's keen understanding of our vision. He listened intently, offering insights that not only met but exceeded our expectations. His expertise in design-build was evident as he seamlessly blended architectural innovation with functional design, ensuring that every detail was both aesthetically pleasing and practical for our daily living.

    The construction phase was a testament to Michael's leadership and the skill of his team. The work was executed with precision, and the attention to detail was remarkable. Michael was always on-site, overseeing operations, which gave us confidence in the quality of the build. His hands-on approach meant that any concerns or changes were addressed promptly and thoughtfully.

    Ingruids Designs, led by Michael's wife, brought an artistic flair to our home's interior. The design choices were both sophisticated and warm, creating spaces that felt uniquely ours. The collaboration between Monahan Design Build and Ingruids Designs was fluid, resulting in a cohesive look that flowed from the exterior architecture to the last piece of furniture placed inside.

    Throughout the project, communication was clear and consistent. Michael made sure we were informed at every stage, which alleviated any stress and kept us excited about the progress. His professionalism was matched only by his passion for his work, which was infectious and made the entire experience enjoyable.

    The final product is a home that not only meets our needs but also reflects our personality and lifestyle. It's a space where we feel both proud and comfortable, thanks to the dedication and talent of Michael Monahan and his team.

    We highly recommend Monahan Design Build and Ingruids Designs to anyone looking for a home that is not just built, but crafted with love and expertise. Michael and his wife have not just built us a house; they've created a home where memories will be made for generations. Thank you for turning our dream into reality with such grace and excellence.

    Read more
  • By Danielle C.
    February 2, 2024
    Fireplace remodel and builtins
    $12,000

    We had the pleasure of working with Monahan Design Build for the renovation of our living room. Michael and his team were excellent, trustworthy and professional. They did a beautiful job and we highly recommend them. We also worked with Ingrid’s Designs as our interior decorator. She did a beautiful job and we could not be happier!

  • By Stranton G. G.
    December 29, 2023
    Custom Home
    $1,980,000

    We had the pleasure of working with Michael Monahan from Monahan Design Build and his wife Ingrid from Ingrids Designs to build my dream home in Devon, Pennsylvania. They are a talented and professional team who delivered exceptional results on time and on budget.

    From the initial consultation to the final walkthrough, they were attentive, responsive, and creative. They listened to my vision and preferences, and offered valuable guidance and advice along the way. They also communicated with me regularly and kept me updated on the progress of the project.

    The quality of their work is outstanding. They used high-quality materials and craftsmanship, and paid attention to every detail. They also incorporated some unique and stylish features that made my home stand out from the rest. The design and layout of my home are functional and beautiful, and reflect my personality and lifestyle.

    I am very happy with the outcome of my custom home project. I would highly recommend Michael Monahan and Ingrid Monahan to anyone looking for a custom design build contractor and interior designer. They are the best in the business .

  • By Tina R.
    March 4, 2020
    $1,200,000

    Our experience with Monahan Building was delightful from the beginning to the end. Everyone went above and beyond to make the process amazing and not stressful. We didn't feel like customers, we felt like family. I am glad we chose Michael Monahan to build our home.

  • July 3, 2019

    I highly recommend Monahan Building to anyone looking for a custom home builder. You will appreciate Michael Monahan's craftsmanship and integrity. He was a pleasure to work with from the very beginning. Michael helped us work through many challenges we faced with approvals before we could build our custom home on our own land. We also had a condensed timeline for building due to a nature conservation requirement and they worked hard to ensure we could meet the aggressive timeline. He was patient and understanding with many design changes that we made along the way to ensure we got it right. Michael and his team worked with us to build the home that was perfect for our family. We love every aspect of our new home thanks to their attention to detail. Even after their work was complete, they have continued to provide support to us ensuring that we are fully satisfied and helping to resolve any questions or concerns along the way. Michael Monahan and his team has been excellent to work with throughout the entire process. Our family enjoyed the design and building phases immensely thanks to their team of qualified, knowledgeable and caring employees.

  • By Janet R.
    May 7, 2018

    We hired Michael Monahan to build our home . He did a amazing job. His wife is a interior decorator and they both worked so well together with us to make our home look like something out of a magazine. They got our home finished o time and on budget. Would highly recommend them both

  • By Kim
    March 31, 2017
    Custom Home
    $2,300,000
    235 days

    We recently hired Monahan building to build our home. Our home was built in a timely matter and on budget. The finishes turned out a amazing. Mikes wife Ingrid of Ingrids Designs was a huge help with the interior decorating as well. A great team. Would highly recommend them.

  • By Ginger C.
    December 30, 2015
    2500 sq ft addition and renovated our entire home
    $600,000
    225 days
    BEST BUILDER EVER

    We had a renovation and addition done on our used to be quaint 2400 sq.ft. home. We looked in to moving or building new and between the real estate taxes and the problems of possibly changing schools and neighborhoods that would effected the children aided in our division to stay and renovate/ add on. We pretty much doubled the size of our home and renovated the sq.ft. of the existing home. We are very happy with the end result. The process wasn't as difficult as I though it would have been. I definitely think that us hiring Monahan Buildes was the best thing we could have done. They weren't the cheapest bid and they weren't the highest bid. But at the end of the day you get what you pay for. My most favorite rooms in our home I would have to say is our kitchen and master bath and suite. I love my closet as well! I finally have somewhere to put my shoes :)
    We are very happy with Monahan and his people. I couldn't recommend them highly enough.

  • By Ladan S.
    July 25, 2015
    Addition and remodel
    $500,000
    186 days
    Awesome Builder

    Mike Monahan and his company recently completed a addition and extensive renovation to our home. Mike had done work on other homes in our neighborhood, that's how we found out about him and his company. I am righting this to help other folks looking for a great contractor that might not know one. The most important thing about our job was that it was done on budget, time and it was 100 percent complete and we were completely satisfied. If you are looking for a contractor and don't know one, Monahan builders would be the company myself and my neighbors would recommend.

  • By Wendy W.
    July 23, 2015
    Addition and complete remoded
    200 days
    First Class Contractor

    My husband and I recently finished a project with Monahan and his team. We were extremely satisfied with the quality of the work and the length of time it took to do the project. If we were to ever do another project we would certainly use them again. There is somethings in life that aren't dependable. If there is a company you can trust and count on it would be Mike Monahan. Thanks again mike for the job well done.

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Building Permits by Monahan Design Build

Sort by: Notable Notable | Date Date | Job Value Job Value
In law suite / kitchen / great room
Valuation:
$228,700
Permit #:
591010
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
New construction
2023-08-16
Custom home
Valuation:
$1,387,490
Permit #:
R-2023-2180
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Residential building permit
2021-10-18
For the erection of a rear one story rear addition with roof deck over the addition to an existing attached structure ( size and location as shown on the plan)
Valuation:
N/A
Permit #:
RP-2020-006187
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
The lot adjustment to consolidate two (2) existing zoning lots (1321 s hancock st & 1323 s hancock st) into one (1) lot (parcel a') size and location as shown on the submitted plan. for the erection of a three (3) story addition with cellar and roof deck accessed by an existing roof deck access structure for use as single family household with one (1) accessory interior off-street par... see more
Valuation:
N/A
Permit #:
876660
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial building permit
2022-10-04
For exterior and interior level 2 alterations to existing three (3) story structure as per plans. no change in occupancy classification. amendment (4/24/2023) to change 1rst floor roof and canopy to a sloped roof as per revised plans. no change to area or projection. revised specification for the new opening loose steel lintel
Valuation:
$85,000
Permit #:
CP-2022-003391
Status:
issued
Fee:
N/A
Permit Type:
Addition and/or a...
Building Type:
N/A
Restaurant conversion renovation exterior and interior level 2 alterations to existing three (3) story structure as per plans. no change in occupancy classification. amendment (4/24/2023) to change 1rst floor roof and canopy to a sloped roof as per revised plans. no change to area or projection. revised specification for the new opening loose steel lintel
Valuation:
$420,920
Permit #:
CP-2022-00339
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
Commercial
Alteration permit
2017-06-19
For prescriptive alterations to residential lobby area on the first floor new partitions to create fire pump room within basement and alterations to masonry load-bearing wall separating dwelling units on 2nd-5th floors as per plans; separate permits required for any and all mechanical electrical plumbing and fire suppression work; building to be fully sprinklered with nfpa 13
Valuation:
N/A
Permit #:
772505
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Alteration permit
2017-01-25
For a partial change of occupancy classification at upper floors to create a multi-family dwelling & level 3 alterations to include erection of partition walls for corridor & dwelling units spaces installation of fire resistance rated assemblies for increase in construction type designation & all associated finish work; building to be fully sprinklered & protected with a standpipe sys... see more
Valuation:
N/A
Permit #:
711947
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A