A compact but efficient and very classy mudroom/foyer is just beyond the quintessential, four-paneled red front door with a sidelight.

How to live large in a small space was a conundrum! Not anymore. A two-bedroom, two-bathroom, 951-square-foot carriage house at 45 Old Rutherford Ave., Unit 1in Charlestown listed by Nancy Roth of Gibson Sotheby’s International Realty for $899,000 offers the solution to this residential headache: oversized key amenities.

The concept begins outside, for example. In addition to a two-car, side-by-side off-street parking, the house has a large brick paver and front patio. Granite pavers along the walkway lead to the front door.

A compact but efficient and very classy mudroom/foyer is just beyond the quintessential, four-paneled red front door with a sidelight. Coat hooks are over a built-in bench within a raised paneled, white enclosure. An exposed fieldstone wall and a slate floor with six-inch tiles add visual interest and texture.

In the guest suite on this level, an exposed fieldstone wall is one appealing feature. A built-in queen-size bed with two storage drawers and a paneled headboard is another. An extra-large, lighted closet with custom hanging spaces has knee wall storage, too.

The black and white tile floor (even in the corner shower and product niche in a frameless glass enclosure) is a timeless look in the en suite bathroom. Finishing touches includes a pedestal sink and wall scones with fabric shades.

This level also includes a utility closet and additional space for storage. The bonus, however, is that this entire floor has radiant heat.

The main living level that runs front-to-back has an uncommon but delightful architectural feature—windows on four sides. The result is that the fully open kitchen and dining-living area is very bright. It’s also spacious and good looking, especially the kitchen.

In fact, this contemporary chef’s domain has all the bells and whistles and its suburban-size big. Moreover, attention to detail during the renovation was the byword.

The oversized island with a quartz countertop (with an ogee edge) seats three, has storage and a beverage fridge. A white ceramic farmer’s sink complements white shaker-style cabinetry that stretches to the ceiling (the island is in a contrasting color) and includes two-pantry-like cupboards. Seeded glass inserts in two upper cabinet doors match the glass panels in the pendant lighting over the island.

The kitchen also has access to a private deck that has stairs to the driveway.

In the living-dining area, one wall has a section designed for a flat-screen television or art work.

A long overhead niche works well for decorative displays. Extra-deep double-crown molding that is also in the kitchen is cleverly installed to create a tray-like ceiling effect. Recessed ceiling lights are a modern touch.

An exposed original cedar beam that are from ships in the Navy Yard were used to build the property is a statement piece in the third level corridor on the way to the master suite that encompasses the entire floor. Wide oak floor boards in a medium stain are also throughout the two main living levels.

Double crown molding and detailed bump boards add a dash of traditional elegance to the king-bed size sleeping chamber. The lighted walk-in closet with custom inserts such as drawers and specialized hanging spaces addresses the practical.

The en suite bathroom (another suburban-size space), however, is luxury personified. Marble tile is used for flooring, including a custom tile “bathmat” inset (in a basket-weave pattern) in front of the vanity with a honed marble countertop.

Marble tile is also on the floor of the step-in shower that has subway tile in the surround and on the ceiling as well as two product niches and two body sprays. Double crown molding, detailed bump boards and plantation shutters on the two windows are finishing touches.

For tub enthusiasts, this bathroom has a freestanding soaker.

Laundry facilities, a full-size LG, stainless steel stackable washer and dryer, are in this room, but thoughtfully out-of-sight.

The history of this property is another “hidden” treat. Constructed in 1794 and extensively rebuilt in 1986-1987, the Wiley House (including the carriage house) has the distinction of being one of the oldest buildings in Charlestown. The property was the former home of Admiral Henry A. Wiley, a distinguished Spanish-American War, World War I and World War II veteran and Commander of the Boston Navy Yard from 1921-1923.

There will be an open house from 2 to 3 p.m. on Sunday, Oct. 14.