The addition that's already drawn on paper
If you're reading this, you've probably already got a sketch of a new family room or a second-story addition sitting on the kitchen table, and you're wondering why the contractor keeps talking about the township before anyone talks about lumber. In Whitpain Township, where Blue Bell sits, that conversation happens early because the permit review is not a formality. It's the point where someone with no stake in your project looks at the plan and decides whether it actually works on your lot, under your roof, in this specific patch of Montgomery County.
A lot of Blue Bell homes date from the 1960s through the 1980s, with a good number of older farmhouses and colonials scattered in between. Additions to these houses almost never go cleanly. Older foundations weren't poured with a future addition in mind, and the lot sizes in a lot of Blue Bell's developments leave less room to maneuver than people expect once setbacks and easements get measured out.
What the township is actually checking
A township reviewer is looking at a short list of things, and it helps to know what's on it. Setbacks from property lines come first, since Whitpain's zoning varies by district and a lot of Blue Bell's newer developments have tighter side-yard requirements than the older sections near Skippack Pike. Lot coverage is next: how much of the property is already covered by the house, the driveway, the patio, and the shed, and whether the addition pushes that total past what's allowed.
Stormwater is a bigger deal here than people expect. This part of Pennsylvania gets heavy, fast summer thunderstorms and plenty of snowmelt runoff in late winter, and the township wants to see where the extra roof area is going to send water. An addition that adds 400 square feet of roof without a plan for where that water goes can flood a neighbor's basement, and the review catches that before it becomes a problem instead of after.
Structural load is checked too, especially for second-story additions. A reviewer wants to see that the existing framing and foundation can actually carry the new weight, including snow load, which in this area is a real number, not an afterthought. Energy code compliance on windows and insulation gets checked as well, since Pennsylvania's code has gotten stricter in recent years.
More on this from What A Township Permit Review Actually Checks On A Home Addition.
What you can look at before you call anyone
You can pull your own property survey, if you have one, and measure the distance from your proposed addition to each property line yourself, just with a tape measure and the plot plan. It won't be official, but it tells you fast whether you're close to a line that's going to cause a fight later. You can also walk your yard after a heavy rain and notice where water already pools or drains, because that's exactly what the township will ask about, and knowing the answer before someone asks saves time.
Check your deed and any homeowner association paperwork for easements, especially if you're near one of Blue Bell's stormwater detention basins or shared drainage areas. A lot of people don't realize there's a utility easement running through the back third of their yard until the addition they planned sits right on top of it.
Where it stops being a homeowner job
Reading a plot plan is one thing. Producing stamped structural drawings, calculating load paths for a second story, or designing a stormwater management plan that satisfies Whitpain's ordinance is a different skill set, and it's where a general contractor who has gone through this specific township's review process earns their keep. The permit office isn't interested in good intentions. They want drawings that show the math, and they want it submitted in the format they expect, with the right number of copies and the right supporting calculations.
This is also where age of the house matters again. An addition on a house built in 1975 may need the contractor to open up existing framing to confirm what's actually there, since original plans are often incomplete or missing entirely from township records. That's not a weekend project with a crowbar and curiosity. It's a job for someone who knows what they're looking at and can document it the way the reviewer needs.
The slow part is the useful part
Permit review in Whitpain can take a few weeks, sometimes longer if stormwater calculations need revisions. It feels slow when you're ready to start digging. But the review exists because this area's combination of older housing stock, clay-heavy soil, and genuinely hard seasonal weather, ice in January, downpours in July, means a sloppy addition shows its problems within a year or two, not decades later. A foundation that wasn't checked for frost depth will heave. A roofline that wasn't checked for drainage will send water into a neighbor's crawlspace the first wet spring.
The review is slow because it's catching the kind of mistakes that are expensive to fix after the drywall goes up. Treat it as the part of the project that protects the rest of it.