home addition in Aptos, CA

Specialty Residential Construction in Santa Cruz, CA

Custom homes, additions, renovations & ADUs.

Let's Build

Kilkenny Construction is a Santa Cruz–based residential general contractor delivering highly personalized, design-driven projects for homeowners who value quality and care. As a small, hands-on team, you receive close leadership throughout your project and access to a curated network of local craftspeople — creating a seamless project experience with consistent craftsmanship and clear accountability.

  • Kitchen with white upper cabinets, wooden lower cabinets, a white countertop, black window, and hanging lantern lights.

    Design it

    We help shape your vision in-house or by connecting you with trusted design professionals.

  • Bathroom with white subway tile walls, a black shower fixture on the left, a bathtub with clawfoot design on the right, and a window showing greenery outside.

    Build it

    Your home is built by a curated network of skilled local craftsmen, selected specifically for your project.

  • Manage it

    You receive hands-on leadership and seamless coordination across your project team.

  • Interior view of a modern staircase with wooden steps, black side support, and cable railing, adjacent to a white wall with decorative African baskets and wall art, a wooden table with storage cubes underneath, a woven basket, a door, and a window.

    Deliver it

    You’re welcomed into a fully completed home, with every detail carefully handled.

A covered outdoor patio with two cushioned armchairs, a coffee table, and a view of trees and rolling hills in the distance.
Bright modern kitchen with white cabinets, marble island, and light wood flooring, featuring pendant lights and large windows.
Modern three-car garage with gray walls and wooden doors, surrounded by a concrete driveway and wooden fence, with green trees and a blue sky in the background.
Modern kitchen with white cabinets, stainless steel appliances, wooden flooring, a large wall clock, a small breakfast bar with two wooden stools, and decorated with plants and wooden cutting boards.
Double bathroom vanity with wooden cabinets and gray countertop, two sinks, two mirrors, hanging pendant lights, decorative plants, hand soap, and a small vanity mirror.
Bright bathroom with a freestanding bathtub, a walk-in shower with glass enclosure, light gray subway tile, patterned floor tiles, and open shelving with towels and decorations.
A two-story blue house with white trim and a front porch. The house has a garage with a white door, a concrete driveway, and a wooden fence around the front yard. There is a large tree in front of the house, partially obscuring it.
Modern bathroom with a glass-enclosed shower area, patterned blue and white tile wall, and a white marble countertop with gray cabinets underneath.
Modern kitchen with white cabinets, stainless steel appliances, a blue island with a wood countertop, copper range hood, white brick backsplash, granite countertops, copper farmhouse sink, large window, and hardwood flooring.
Bright, modern bathroom with white cabinetry, marble countertops, a bathtub, and large windows with blinds. Decor includes plants, a mirror, and wall art.
A cozy living room with a teal wall, wooden ceiling, and a mix of modern and retro furniture. There's a guitar on a stand, a wooden coffee table, and a circular hallway leading to a space with chairs, plants, and artwork.
Aerial view of a backyard deck with a hot tub, outdoor furniture, and surrounding trees.