GableworthDesign-Build · Cold Spring HarborProjectsPlan a build
Harbor Hill Addition at dusk: a shingled cape with its new wing stepping down the lawn.

Harbor Hill AdditionCold Spring Harbor

No. 32 / Addition / 2021

A primary suite and a study over a new mudroom, added to a 1950s cape about 600 yards from the studio.

Scope
Addition
Completed
2021
Area
2,610 sq ft, 940 of them added
Lot
0.6 acres
Bedrooms / baths
3 / 2.5
Design, approvals, build
4, 3 and 8 months
Contract
$912,000
Final cost
$921,500 (+1.0%)
Changes
1 owner
Superintendent
Dana Whitlock
Approvals
Building permit
01 / The site

We walked to work.

A 0.6-acre lot on the hill above the harbor. The cape sits at the top of a 12-foot slope down to the back lawn, which made the addition a two-story wing on the low side and a one-story wing on the high side.

Contours every 2 ft. High point 73 ft, low point 58 ft. Ground generalized from the survey, which stays with the owners.

6070CAPE, 1953NEW WINGHarborBACK LAWNSTREET72.258.4N025 FTHarbor Hill AdditionL-1 · CONTOURS EVERY 2 FT · HIGH 73.0 · LOW 57.8NO. 32

Harbor Hill Addition, site plate

6070CAPE, 1953NEW WINGHarborBACK LAWNSTREET72.258.4N025 FTHarbor Hill AdditionL-1 · CONTOURS EVERY 2 FT · HIGH 73.0 · LOW 57.8NO. 32

On a small screen, scroll sideways to read the whole sheet.

02 / The brief

Room upstairs, not a second house on top of the first.

The owners had raised two children in the cape and wanted to stay. They needed a bedroom they could reach without the children's old rooms, and a room to work in that was not the dining table.

The primary bedroom in the Harbor Hill wing under a steep board ceiling, two windows looking down the lawn to the harbor.
PL. 01 / The primary bedroom, up the new stair and past none of the children's old rooms. Painted boards under the cape's own 12-in-12 pitch, and the harbor at the bottom of the lawn.
03 / The answer

A wing that reads as a wing.

The new wing copies the cape's 12-in-12 roof pitch and steps down the slope. From the street the house still reads as a cape with a wing, which is what it is.

LIVING18'-0" x 16'-0"KITCHEN14'-0" x 12'-0"BATHBEDROOM12'-0" x 12'-0"BEDROOM12'-0" x 12'-0"MUDROOM12'-0" x 14'-0"STAIRSTUDY18'-0" x 12'-0"50'-0"28'-0"N10 FTA-101 · HARBOR HILL ADDITION · STREET LEVELGrey rooms are the 1953 cape, left as they were.

Harbor Hill Addition, street level

LIVING18'-0" x 16'-0"KITCHEN14'-0" x 12'-0"BATHBEDROOM12'-0" x 12'-0"BEDROOM12'-0" x 12'-0"MUDROOM12'-0" x 14'-0"STAIRSTUDY18'-0" x 12'-0"50'-0"28'-0"N10 FTA-101 · HARBOR HILL ADDITION · STREET LEVELGrey rooms are the 1953 cape, left as they were.

On a small screen, scroll sideways to read the whole sheet.

04 / The price

One change.

First price $860,000 to $960,000. Signed at $912,000. Final $921,500, up 1.0 percent: one owner change, a deeper mudroom bench.

First band
$860,000 to $960,000
Contract
$912,000
Final
$921,500 (+1.0%)
Construction
$874,000
Site work and tie-in
$38,000
Owner change: a deeper bench
$9,500
Total
$921,500
Sample data

Design fees are billed separately: 10 percent of construction for a new house, 12 percent for a renovation or an addition.

05 / Materials

What Harbor Hill Addition is made of.

  • White cedar shingle

    Matched to the cape's exposure

    The new wing.

  • Roof shingle, matched

    12-in-12 pitch, same as 1953

    The wing roof.

  • White oak bench

    14 ft, built in the shop

    The mudroom. The one change made it deeper.

  • Thermal-finished bluestone

    2-in, honed

    The mudroom floor.

  • An unlacquered brass knob on a painted door.
    Unlacquered brass

    Mortise locks and hinges

    Every door in the wing.

Plates

More of Harbor Hill Addition.

The study in the Harbor Hill wing: an oak desk and chair under a black double-hung window, a brass lamp, the harbor through the oak leaves.
PL. 02 / The study on the high side of the wing: an oak desk from the shop, a brass lamp, the harbor through the oaks. A room to work in that is not the dining table.
Harbor Hill Addition at blue hour from the bottom of the back lawn: the shingled house with its wing stepping down the slope on the right, windows lit, the harbor through the trees.
PL. 03 / Harbor Hill from the bottom of the back lawn at blue hour. The wing steps down the slope on the right, and the harbor shows through the oaks.
The mudroom wall at Harbor Hill: a white shelf with two wicker baskets, a black rail, a row of pegs with coats and a straw bag.
PL. 04 / The mudroom wall by the back door: a shelf for the baskets, a rail, and a row of pegs at coat height.

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A house like Harbor Hill Addition, on your ground.

The planner starts from this project's size and scope and gives you a fresh band for your town. A site visit is an hour on the lot with an architect and our estimator.

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