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Season guide

This Old House: Season 27

26 episodes Premiered Oct 6, 2005 Updated Sep 26, 2026

Cambridge; Washington D.C.

Previously on This Old House

Season 27 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of This Old House Season 26.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.

Season overview

Cambridge; Washington D.C.

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Season 27 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 27 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 27: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

19%
81%
Mytharc (5): Crucial lore & season climaxes
Core (21): Character development & subplots
Side Quest (0): Standalone / filler
S27·E1 Mytharc

Cambridge | A Modern Old House

Oct 6, 2005

The new season finds the experts at This Old House in historic Cambridge, Mass., working on a mid-century Modern house for biotech bachelor, George Mabry. At the project house near

S27·E2 Core

Cambridge | Modernize, Again

Oct 13, 2005

Host Kevin O'Connor arrives to find homeowner George Mabry moving out and general contractor Tom Silva moving in. With a building permit in hand, Tom starts with the carport, disma

S27·E3 Core

Cambridge | Worst-Case Scenario

Oct 20, 2005

A week of rain from a springtime Nor'easter hasn't stopped work on the house, nor on the lot. Landscape contractor Roger Cook shows host Kevin O'Connor the progress—the trees are c

S27·E4 Core

Cambridge | Longfellow's House

Oct 27, 2005

Host Kevin O'Connor and master carpenter Norm Abram visit the independently owned neighborhood shops of nearby Huron Village. Back at the house, Kevin lends Norm and general contra

S27·E5 Mytharc

Cambridge | The Cost of Poor Workmanship

Nov 3, 2005

Master carpenter Norm Abram shows Host Kevin O'Connor the newly discovered problems at the project house, most of them caused by the poor workmanship of a previous contractor. In t

S27·E6 Core

Cambridge | High-Tech Heating and Cooling

Nov 10, 2005

Master carpenter Norm Abram and host Kevin O'Connor open the show at Cambridge Common — the city's oldest public open space and a center of rebel activity in the early years of the

S27·E7 Core

Cambridge | Water Damage Brings Opportunity

Nov 17, 2005

Host Kevin O'Connor finds master carpenter Norm Abram and homeowner George Mabry discussing the recent water damage in the old kitchen, and George's new inclination to renovate the

S27·E8 Core

Cambridge | Real Stone, Flat Roof

Nov 24, 2005

Host Kevin O'Connor opens the show around the corner at Formaggio Kitchen — a world-class gourmet food shop that also has a cheese-ripening cave in the basement — the first ever to

S27·E9 Core

Cambridge | A Water-Feature Welcome

Dec 1, 2005

Landscape architect Gregory Lombardi shows host Kevin O'Connor the final design for the entry courtyards and water feature, and landscape contractor Roger Cook explains the formwor

S27·E10 Core

Cambridge | Creating a Dramatic Entryway

Dec 8, 2005

Host Kevin O'Connor and plumbing and heating expert Richard Trethewey stop in to a neighborhood institution known as "Mr. Bartley's Burger Cottage." Master carpenter Norm Abram exp

S27·E11 Core

Cambridge | Rain Slows Some Progress

Dec 15, 2005

Landscape contractor Roger Cook shows host Kevin O'Connor Mount Auburn Cemetery — America's first landscaped cemetery featuring 5,500 trees and many notable graves. Back at the hou

S27·E12 Core

Cambridge | Dramatic Staircase

Dec 22, 2005

Host Kevin O'Connor arrives to find exterior coatings specialist Dan Rourke and his crew applying the EIFS finish coat. Custom pool specialist Bob Snay installs a black pebble fini

S27·E13 Core

Cambridge | Interior Finishes Begin

Dec 29, 2005

Landscape contractor Roger Cook shows host Kevin O'Connor how he's installing a pre-fabricated pitched structural foam trench drain at the entrance to the garage. Inside, plumbing

S27·E14 Core

Cambridge | Fine Craftsmanship

Jan 5, 2006

Host Kevin O'Connor visits Harvard University to see their preservation efforts on several historic old buildings, including Memorial Hall, which was ravaged by a fire in the 1950'

S27·E15 Core

Cambridge | Contemporary Design Elements

Jan 12, 2006

Landscape contractor Roger Cook sets the massive bluestone treads on a stringer that appears to "float" over the new water feature. Landscape architect Greg Lombardi shows host Kev

S27·E16 Core

Cambridge | Modern Conveniences in a Modern Home

Jan 19, 2006

Host Kevin O'Connor arrives to find general contractor Tom Silva meeting with building inspector Michael Grover. At the front door, Tom shows Kevin how he's installing the brushed

S27·E17 Mytharc

Cambridge | Things Are Coming Together

Jan 26, 2006

With only a week left on the project, master carpenter Norm Abram finds general contractor Tom Silva at work on the dramatic 3-story stair. With the teak treads and bronze balustra

S27·E18 Core

Cambridge | A Red Box Becomes a Show House

Feb 2, 2006

In the garage, master carpenter Norm Abram finds specialist Joe Ferraro installing a new custom garage system. Inside, host Kevin O'Connor and homeowner George Mabry meet kitchen d

S27·E19 Core

Washington, DC | Reviving an Abandoned 1879 Rowhouse

Feb 9, 2006

Master Carpenter Norm Abram and host Kevin O'Connor travel to Washington, D.C. to help non-profit developer Mi Casa Inc. renovate an abandoned 1879 rowhouse. The group attempts to

S27·E20 Core

Washington, DC | Setbacks Open Up New Ideas

Feb 16, 2006

Host Kevin O'Connor visits the National Mall to see how the National Park Service is finishing up nearly 10 years of renovation at the Lincoln Memorial. Back at the project house,

S27·E22 Core

Washington, DC | A Rebuilt Structure

Mar 2, 2006

Host Kevin O'Connor and master carpenter Norm Abram open the show at the most visited destination in the Nation's capital—DC's newly restored Union Station. Back at the project hou

S27·E23 Core

Washington, DC | Beautiful Historic Restorations

Mar 9, 2006

Restoration contractor Danny Palousek shows master carpenter Norm Abram how he's repointing and rebuilding the decorative brickwork on the facade of the house. Host Kevin O'Connor

S27·E24 Core

Washington, DC | The Outside is Shaping Up, Too

Mar 16, 2006

Host Kevin O'Connor meets local Rick Lee for a tour of the most famous block in the neighborhood, the "U Street Corridor," which includes stops at Ben's Chili bowl and the historic

S27·E25 Mytharc

Washington, DC | Surface Finishes

Mar 23, 2006

Landscape contractor Roger Cook brings host Kevin O'Connor to the United States Botanic Garden — it's at the base of the Capitol and serves as the nation's greenhouse boasting 4,00

S27·E26 Mytharc

Washington, DC | A Home Saved

Mar 30, 2006

Day before the wrap party, master carpenter Norm Abram and host Kevin O'Connor visit the Jefferson Memorial. Architect Genell Anderson shows Norm the archival photo that inspired h

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