$1,099,000
109 N Landmark Ln, Fort Washington, PA 19034
Listed by BHHS Fox & Roach The Harper at Rittenhouse Square
A Truly One-of-a-Kind Ambler Estate There are beautiful homes—and then there are properties that simply cannot be duplicated. This is one of them. Hidden at the end of a long, tree-lined drive on more than three breathtaking private acres, this extraordinary stone estate is a world of its own. Nearly 6,000 square feet of sprawling one-floor living is surrounded by a landscape that feels more like a private resort than a home in the heart of Upper Dublin. Majestic specimen trees frame sweeping lawns, a tranquil pond with fountain, meandering stream, in-ground pool and a charming orchard of pear, peach, apple and persimmon trees. Multiple stone terraces overlook the grounds, creating unforgettable spaces for morning coffee, summer entertaining or quiet evenings surrounded by nature. The privacy and beauty of this setting are truly remarkable. Inside, timeless architecture meets distinctive mid-century character. Walls of windows and skylights fill the home with natural light and bring the spectacular outdoors into nearly every room. Beautiful walnut woodwork, marble terrazzo flooring and generously proportioned spaces give the home a warmth and character rarely found today. The open floor plan was made for entertaining, with a spacious kitchen, granite countertops, butler's pantry and wet bar. One of the home's most unexpected features is an indoor Endless Pool surrounded by a sun-filled solarium—a private, resort-like escape to enjoy year-round. A separate guest, au pair or in-law suite adds wonderful flexibility for today's lifestyle. Beautifully preserved yet offering endless possibilities to make it your own, this is much more than a home. It is a private oasis, an architectural treasure and an extraordinary piece of Ambler that would be nearly impossible to recreate today. Private. Peaceful. Unexpected. And truly one of a kind.
| Date | Event | Price |
|---|---|---|
| Sep 8, 2026 | Listed for sale | $1,097,000 |
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
$1,216,000
Automated estimate, not an appraisal. Sale records through July 2026.
Based on 10 comparable sales nearby, the Montgomery County assessment ratio, weighted toward the current asking price.
| Address | Closed | Sale price | Bd/Ba | Sqft | Adjusted value |
|---|---|---|---|---|---|
| 744 TENNIS AVE, AMBLER, PA 19002 | December 2025 | $1,140,000 | 5/4 | 5,208 | $1,371,291 |
| 705 LAKE DR, AMBLER, PA 19002 | June 2026 | $1,433,000 | 4/4 | 5,267 | $1,691,790 |
| 1006 FARM LN, AMBLER, PA 19002 | June 2026 | $1,460,000 | 4/4 | 6,264 | $1,509,145 |
| 1555 BEECHNUT CIR, AMBLER, PA 19002 | May 2025 | $1,525,000 | 4/3 | 5,657 | $1,867,647 |
| 1426 TREETOP LN, AMBLER, PA 19002 | May 2026 | $1,175,000 | 5/3 | 5,053 | $1,505,225 |
| 1406 GENTLEMENS WAY, DRESHER, PA 19025 | August 2025 | $820,000 | 5/4 | 5,511 | $1,009,181 |
Estimated at current rates
$22,157 / year
≈ $1,846 per month
MLS shows (2025)
$21,518
+3.0% at current rates
School tax
UPPER DUBLIN · 39.75 mills (2025-26)
$16,592
County tax
Montgomery County · 5.95 mills (2026)
$2,484
Municipal tax
As recorded for 2025, varies by municipality
$3,081
Recomputed from the county assessment ($417,390, 1996 base year) × current millage. School millage is from the latest year certified by the Pennsylvania Department of Education (2025-26); districts adopt the next year's budgets each June, and we update when the state certifies the statewide file in the fall. Portals typically reprint the recorded 2025 bill. Pennsylvania does not reassess on sale. Estimate only. Verify with Montgomery County before relying on it. Learn more: PA property tax calculator · Common Level Ratio by county.
Loan term
Estimated monthly payment
$7,673/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
Upper Dublin
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
Montgomery County crime & safety numbers →
County figures from FBI and Pennsylvania source data.
Property taxes
Montgomery 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.
The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
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: September 10, 2026 at 2:14 PM EDT
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