If you own a home in Marion, MA, you may eventually look around and think, “Could we add a garage here?” Or maybe you’re dreaming about a pool, a larger kitchen, a first-floor suite, or an addition for more living space.
Before you start calling contractors, there’s one thing to figure out first.
Does the property actually have room for the project under Marion’s current rules?
The answer depends on the property, its zoning district, the location of existing structures, wetlands or flood areas, and the type of project you have in mind.
A little homework upfront can save you from designing something that can’t be approved.
Start With the Lot, Not the Project
The first step is to look at the property as a whole.
Marion has different zoning requirements, and the applicable rules can affect lot dimensions, setbacks, and the placement of structures. The Town’s Building Department administers the state building, electrical, plumbing, and gas codes as well as Marion’s zoning requirements as they relate to construction and land use.
That matters because a property that looks like it has plenty of yard space may have less usable building area than you expect.
For example, you might have enough room for the square footage of a garage, but not enough room to place it while meeting the required setbacks.
That’s why a site plan or plot plan is so useful. Marion states that a plot plan is required when the work involves a new structure, including a swimming pool, or an addition to an existing structure. The Town also says plot plans must be prepared and stamped by a Registered Land Surveyor.
Check the Setbacks
Setbacks are simply the required distances between your proposed project and your property lines.
They can make a big difference in Marion, especially on smaller lots or properties where the existing house is already close to a lot line.
Before you get too attached to a particular location for a garage, pool, or addition, have the property lines and existing structures accurately located.
A professional survey can be especially helpful if your proposed project will be close to a setback line. Marion notes that a mortgage plan may not be accurate enough when a project is close to a required setback.
This is one of those times when a little planning can save you a lot of frustration later.
A Garage May Need More Room Than You Think
A detached garage isn't just the footprint of the building.
You also need to think about the driveway, access, setbacks, drainage, utilities, and how the garage fits with everything else already on the property.
If you're considering an attached garage, the addition becomes part of the overall building footprint. That can affect setbacks and other dimensional requirements.
And if you're looking at a property with an older garage or other outbuilding, don't assume it was built under today's rules. Existing structures can have their own zoning history, and changes to a nonconforming property may require additional review.
If you’re buying a Marion home because you want to add a garage later, it can be helpful to understand what to know about an existing detached garage or outbuilding before making the property part of your plans.
If the property already has a garage, shed, barn, or other accessory structure, look into its permits, location, size, and relationship to the current zoning requirements. This can help you understand what you're actually starting with before designing something new.
What About a Pool?
Yes, pools are subject to permitting in Marion.
The Town lists swimming pools, including inground and above-ground pools, among projects requiring a building permit. A plot plan is also required for a proposed swimming pool.
There can be other approvals to consider, too.
A building permit isn't necessarily the only approval a project may need. Depending on the property and project, zoning, electrical, plumbing, gas, Board of Health, or Conservation requirements can come into play.
So before you assume that a pool can simply go in the back yard, check the actual lot.
Additions Can Get Complicated Quickly
An addition sounds straightforward until you start looking at everything that may be affected.
Maybe you want to add a family room. Maybe you're thinking about a larger primary suite or another bedroom.
The addition has to fit on the lot while meeting applicable zoning and building requirements. It also needs to work with the existing structure, utilities, drainage, and, where applicable, septic capacity.
If the addition involves another bedroom on a property with a private septic system, that deserves particular attention. understanding the property's septic system before buying can help you determine whether the system can support your plans.
Wastewater requirements can become a major factor in what you can add and where you can put it.
This is something I'd want to know before buying a property specifically for a future expansion.
Don't Forget About Wetlands
This is especially important in a coastal community like Marion.
The Marion Conservation Commission has jurisdiction over wetland resource areas under the Massachusetts Wetlands Protection Act. Certain projects near wetlands, rivers, streams, coastal areas, and other protected resource areas may require Conservation Commission review or permitting.
That can affect a proposed addition, garage, pool, grading, landscaping, or other work.
If you're looking at a waterfront or water-adjacent property, don't wait until after you've purchased it to find out what part of the lot is actually available for construction.
Flood Zones Matter, Too
Marion has properties that can be affected by coastal flooding and other environmental restrictions.
A property can look perfect on a sunny afternoon and still have construction limitations because of its location or elevation.
Before planning a major project, check the property's flood information and any applicable local requirements.
The Town also cautions that unpermitted work can create problems involving building-code compliance and flood-zone regulations.
This is another reason a proper site review matters before you start drawing up plans.
Is the Property in a Historic District?
If you're looking at a property in the Marion Village Local Historic District, there may be another layer of review.
The Town's historic district requirements address additions and new construction and give the Historic District Commission a role in reviewing projects within the district.
So even if an addition works from a basic zoning standpoint, its design may still need to meet historic district requirements.
This can matter when you're thinking about changing the exterior of an older Marion home.
What If the Property Doesn't Meet Current Rules?
This comes up more often than buyers realize, especially with older homes.
A house may have been built decades ago under different zoning requirements. Maybe it's closer to a lot line than today's rules allow. Maybe the lot is smaller than the current minimum. Maybe an existing structure already creates a zoning issue.
That doesn't automatically mean you can't make changes.
But it does mean you should find out what approvals may be needed before assuming the project is straightforward.
Marion explains that a nonconforming lot does not comply with current zoning regulations and that adding to or altering structures may require a Special Permit or Variance through the Zoning Board of Appeals.
That's a very different situation from buying a property where the proposed project clearly fits within the current rules.
Questions to Ask Before You Buy
If you're shopping for a Marion property and already have a renovation or expansion in mind, I'd want answers to these questions:
What zoning requirements apply to the property?
What are the required setbacks?
How close is the existing house to the property lines?
Is there enough usable yard area for the proposed project?
Are there wetlands or other protected resource areas?
Is the property in a flood hazard area?
Does the property have septic, and if so, can it support the proposed use?
Is the property in a historic district?
Are there existing structures or additions that don't conform to current zoning?
Will the project require a variance, special permit, or other approval?
Is a professional survey needed?
What permits will be required?
Marion's Building Department is a good place to start when you're trying to understand what a particular project may involve. The department specifically recommends contacting it when you're unsure whether a permit or other approval is required.
Frequently Asked Questions
Can I add a garage to my Marion, MA property?
Possibly. It depends on the property's zoning, setbacks, lot configuration, existing structures, and other site conditions.
A detached garage also needs to work with driveway access, drainage, utilities, and the rest of the property. Before assuming a garage will fit, have the lot and applicable requirements reviewed.
Do I need a permit to install a pool in Marion?
Yes. Marion lists both inground and above-ground swimming pools among projects requiring a building permit. A plot plan is also required for a proposed pool.
Depending on the property, additional approvals may be needed.
Can I build an addition close to my property line?
Not automatically.
The required setback depends on the applicable zoning requirements and the property's circumstances. If the existing home is already close to a lot line, the proposed addition may need additional review.
A survey can help establish exactly where the property lines and existing structures are located.
What if my home is already too close to the property line?
An existing home that doesn't meet current setbacks may be considered nonconforming under zoning rules.
That doesn't necessarily prevent you from making improvements, but the proposed work may require additional review or approval.
This is something worth checking before buying a property with plans for a major addition.
Can I add another bedroom if the property has septic?
Maybe, but don't assume the septic system can handle it.
Adding bedrooms can affect wastewater requirements because the system may have been designed for a specific number of bedrooms or a particular flow.
If you're buying a Marion property with a private septic system and plan to add living space, have the septic situation investigated early.
Do wetlands affect construction in Marion?
They can.
Properties near wetlands, rivers, streams, coastal areas, and other protected resource areas may be subject to Conservation Commission review and additional requirements.
This can affect where you can place a garage, pool, addition, driveway, or other improvements.
If You're Buying With a Project in Mind
This is where I think buyers need to be a little careful.
Don't buy a property based solely on what you think you can build.
Buy it after you've done enough homework to feel reasonably confident that the property can support the changes you want.
If a garage, pool, addition, or other project is a big part of why you love the property, tell your real estate agent early. The right questions can be asked before you get too far into the process.
It can also be useful to consider the property's future from a broader real estate perspective, including understanding the Marion real estate market and typical selling timeline if you eventually decide to sell.
And if the answer isn't clear, bring in the right professionals. A surveyor, architect, engineer, attorney, or contractor may be able to answer questions that a listing, tax record, or quick walk around the yard can't.
Marion has its own rules, and every property is different.
The best time to find out what you can build is before you buy, not after.
A Note for Marion Home Buyers
If you're considering buying a home in Marion because you want to create more space, add a pool, build a garage, or make a significant addition, I'd be happy to help you look at the property from that perspective.
The goal isn't just finding a beautiful home. It's finding one that works for the life you want to have there.
Discover the lifestyle, conveniences, and attractions that make Marion special here: https://susangordenryanluxury.com/neighborhoods/marion
About the Author
Susan Gorden Ryan is a Luxury Real Estate Agent serving Southeastern Massachusetts & Rhode Island. She can be reached at susangordonryanluxury.com or (508) 208-1927.
