McCosker Builders

McCosker Builders J.F. McCosker & Son LLC is a family owned New Hampshire based design-build firm with a reputation for quality, integrity, and service.

As third generation builders, we bring experience to each project - from fine, custom craft homes to light commercial projects across New Hampshire and throughout New England. We have worked diligently to build a reputation of respect within the industry and of satisfaction among our clients. We differentiate ourselves from our competitors as the Owner's Agent; advising on and managing each phase

of the project so that the owner remains in control of the construction process, from design through completion.

Quick bathroom vanity upgrade project. Installed a new vanity with a quartz countertop, under-mount sink, new faucet, mi...
04/22/2026

Quick bathroom vanity upgrade project. Installed a new vanity with a quartz countertop, under-mount sink, new faucet, mirror, vanity light, and a fresh coat of paint!

Our latest bathroom remodel all finished up!
04/03/2026

Our latest bathroom remodel all finished up!

04/03/2026

Complete Master Bath remodel.

Out with the old and in with the new! Replaced these old oak cabinets with new white shaker style cabinets. New solid ha...
03/12/2025

Out with the old and in with the new! Replaced these old oak cabinets with new white shaker style cabinets. New solid hardwood maple floors and quarts countertops will be going In next.

02/22/2025

Walk through of our most recent project. Clean, paint, new flooring, re-finish bathrooms, new appliances, new door hardware, and misc. repairs throughout.

The driveway base went in today and is looking good!
09/02/2021

The driveway base went in today and is looking good!

Video walk through of our Rochester NH detached garage project.
08/27/2021

Video walk through of our Rochester NH detached garage project.

Looking to replace, add onto, or build a new deck? McCosker builders has you covered. Shoot us a message or give us a ca...
07/09/2021

Looking to replace, add onto, or build a new deck? McCosker builders has you covered. Shoot us a message or give us a call for a free project consultation.

New garage build we will be breaking ground on this month. If you’re looking to build a garage, attached, or detached, s...
07/04/2021

New garage build we will be breaking ground on this month. If you’re looking to build a garage, attached, or detached, shoot us a message or give us a call for a free project consultation.

Address

67 Jonathan Avenue
Rochester, NH
03839

Telephone

+16038343863

Website

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