
$1,548,053
520 Newcomen Rd, Exton, PA 19341
Listed by LPT Realty, LLC
As America celebrates its 250th birthday you can celebrate the approx. 225 years of rich history of your truly one-of-a-kind home and 10+ acres! Originally established as a 19th-century Chester County farmstead during the post-American Revolution farming expansion, the historic “Smoke House Farm” reflects Chester County’s agricultural heritage, complete with stone barn structures, preserved pastureland, and an estate-style addition & enhancements that preserve its historic character. In Downingtown Schools, and featuring 5 Bedrooms (including main level In-Law Suite); 3 Full Baths; 3 Half Baths; and outside multi-tier Patios surrounding the 20x40 In-Ground Infinity Pool with cascading waterfall and jetted Spa --- set in a backdrop of the stone walls & wood doors of the original barn. Only Class 2 historic so you have flexibility to make changes & make it your own! Plus the Act 319 status means low taxes along with the bucolic setting of grassy yards, preserved pastures, mature woodlands, and ponds & creek. This is a property perfectly curated for elevated everyday comfort, plus exceptional & memorable entertaining! Inside original hardwood floors, tall ceilings, exposed beams, deep-set sunlit windows, and generously sized rooms reflect the historic craftsmanship. A Study/Parlor has a fireplace with Mercer-tiled surround, and is adjacent to the spacious Living Room/Library also with fireplace. Down the hall are a Powder Room; Mudroom; and versatile Workroom with utility sink and abundant storage, ideal for hobbies, projects, gardening supplies, more. The Primary Suite includes a striking exposed timber-frame entrance into the Bedroom with built-in cabinetry and a walk-in closet; Sitting Room; and remodeled Full Bath with sculpted freestanding soaking tub and glass-enclosed shower with marbled surround. On this main floor are also the remodeled Kitchen with gas range and overhead vent hood, built in fridge & pantry, raised panel cabinetry and glass curios, and onyx granite counters; an elegant Dining Room; Powder Room; Laundry; and Breakfast Room with pocket doors into the Family Room showcasing a soaring two-story ceiling, hardwood floors, floor-to-ceiling stone fireplace, bumped-out bay window, and door out to the side Porch overlooking the woods & old smoke house setting. Upstairs (a conventional staircase plus an original winder staircase!) and also in the original build are 3 more Bedrooms; Full Bath; and spacious cedar closet. The new addition is a true testament to intentional design, thoughtfully integrating modern sophistication. There is the 5th Bedroom en-suite with a Full Bath that could be a second Primary Suite or In-Law/Guest Suite. The second Kitchen includes a soaring ceiling, expansive sit-up peninsula w/pendant lighting, and walk-in Pantry room. And the Breakfast Room is the ideal gathering space! The tiled Vestibule area with walls of sun-filled windows includes a charming built-in bench seating area, Pool Shower/Changing Room, Powder Room, and of course doors out to your Patios & In-Ground Pool oasis! The oversized, heated 4-Car Garage has planned space for a potential elevator to the Main Floor (via Powder Room in the addition). The expanded driveway could park up to 10 to 15 vehicles/RVs/etc. (remember, no HOA!). Radiant and gas heating, plus centralized A/C, and every room has its own thermostat. Just minutes to Marsh Creek State Park, Rtes 322/30/Bypass/PA Turnpike, train station, shopping, dining, STEM Academy & everywhere you want to be! Property is meticulously maintained so the included AHS ShieldComplete Home Warranty with Pool Coverage (their highest level of coverage!) is just added peace-of-mind for you! Some photos virtually staged. Verification (including sq ft/size/lay-out/more) lies with the consumer.
| Date | Event | Price |
|---|---|---|
| Mar 20, 2026 | Listed for sale | $1,499,000 |
Price changes are tracked from when NookLocal first indexed this listing; earlier history may not appear. Tax & assessment details are in the section below.
Estimated value
$1,437,000
Automated estimate, not an appraisal. Sale records through July 2026.
Based on 10 comparable sales nearby, the Chester County assessment ratio, weighted toward the current asking price.
| Address | Closed | Sale price | Bd/Ba | Sqft | Adjusted value |
|---|---|---|---|---|---|
| 412 MERCER DR, DOWNINGTOWN, PA 19335 | April 2026 | $1,432,000 | 5/5 | 8,307 | $1,324,836 |
| 425 MERCER DR, DOWNINGTOWN, PA 19335 | July 2026 | $1,200,000 | 5/3 | 5,874 | $1,680,000 |
| 19 LAMMEY WAY, DOWNINGTOWN, PA 19335 | May 2026 | $850,000 | 5/3 | 4,292 | $1,190,000 |
| 1127 OAK HOLLOW DR, DOWNINGTOWN, PA 19335 | October 2025 | $1,275,000 | 5/3 | 6,791 | $1,662,510 |
| 425 MERCER DR, DOWNINGTOWN, PA 19335 | February 2025 | $1,140,000 | 5/3 | 5,874 | $1,720,678 |
| 117 NICHOLS MILL RD, DOWNINGTOWN, PA 19335 | October 2025 | $850,000 | 4/3 | 4,500 | $1,254,710 |
Estimated at current rates
$12,809 / year
≈ $1,067 per month
MLS shows (2025)
$12,425
+3.1% at current rates
School tax
DOWNINGTOWN AREA · 31.91 mills (2025-26)
$10,192
County tax
Chester County · 5.16 mills (2025)
$1,649
Municipal tax
As recorded for 2025, varies by municipality
$968
Recomputed from the county assessment ($319,390, 1998 base year) × current millage. Portals typically reprint the recorded 2025 bill. Pennsylvania does not reassess on sale. Estimate only. Verify with Chester County before relying on it. Learn more: PA property tax calculator · Common Level Ratio by county.
Loan term
Estimated monthly payment
$9,029/mo
Taxes use NookLocal's estimate at current millage rates, not the stale figure on the MLS. The default rate is the average 30-year rate as of July 2026; insurance is estimated at 0.35% of the price per year. Below 20% down, lenders usually add mortgage insurance, which this estimate doesn't include. Estimate only; verify before relying on it.
School district
Downingtown Area
2025 PA state assessments (PSSA / Keystone) and graduation data. The index measures student outcomes, not school effectiveness, and is not adjusted for demographics. Districts serve all residents; verify enrollment boundaries with the district.
Safety data
Chester County crime & safety numbers →
FBI and Pennsylvania source data, presented without spin.
Property taxes
Chester County taxes, explained →
Millage, the Common Level Ratio, and what changes after you buy.
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Information Deemed Reliable But Not Guaranteed
The data relating to real estate for sale on this website appears in part through the BRIGHT Internet Data Exchange program, a voluntary cooperative exchange of property listing data between licensed real estate brokerage firms in which United Real Estate Strive 212 participates, and is provided by BRIGHT through a licensing agreement.
IDX listings are displayed pursuant to broker of record United Real Estate Strive 212, Frank Ramos, Broker/Owner, PA Broker License RM424345, 1220 Broadcasting Rd, Suite 201, Wyomissing, PA 19610, (610) 372-0212.
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Some properties which appear for sale on this website may no longer be available because they are under contract, have Closed or are no longer being offered for sale.
Data last updated: July 8, 2026 at 2:25 PM EDT
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