This Old HouseSeason 452023 · 26 episodesEpisodes1Lexington: On a MissionThe crew starts a new project in Lexington, MA to renovate a home to be accessible for a young boy who has Muscular Dystrophy. They meet the homeowners and tour the project.2Lexington: Shore We CanThe interior is demoed, and rebuilding has begun. The new design and energy code are explained.3Lexington: The Big DigAccessible features integrated into the design begin at construction. A new mechanical room connects to the old via a block wall tunnel, HVAC ducting is buried underground, and after learning about residential elevators, framing begins for one.4Lexington: Engineered For AccessibilityA lally column stands in the way of the new open floor plan. As a solution, it is removed, and the ridge beam is replaced with a trio of engineered beams. The new landscape is previewed in 3D, and tips are shared for creating an accessible bathroom.5Lexington: Gone GeoA zero-threshold entry to the patio is framed. Geothermal energy is explained, and wells are dug.6Lexington: Reworked and RewiredThe fully framed front of the house is revealed; work continues on the geothermal system; the connection to the interior is made; blocking is installed in the framing; replacing and rewiring old receptacles.7Lexington: Ramping UpRepairing the original brick; building a DIY ramp; touring a modern accessible home; adding trim to the exterior.8Lexington: Drop in the GutterA walking tour of the roof reveals its various pitches; installing a built-in gutter system; rough-in begins on the interior; energy-efficient windows are installed.9Lexington: Phased OutWork on the house is divided into phases for efficient workflow; the back foundation gets a stucco finish; kitchen cabinet selection; installing siding; the back patio gets proper drainage.10Lexington: Seven Layer FloorsThe slab-on-grade foundation is built up; accessible AV solutions are explored; prep begins for a curbless shower; installing an automatic zero threshold door.11Lexington: Electrical BondCopper bonding is installed before the therapy pool is craned in; tile selections are revealed; the integrated entrance ramp gets snow melt and a final layer of concrete; elevator disconnects are installed.12Lexington: UpcycledBuilding the elevator cab; using leftover flooring to make a modern feature for the kitchen island; exploring AV solutions for accessibility; installing new solar panels.13Lexington: Install With CareWork on the internal geothermal systems begins; installing in-wall lighting to illuminate the entrance ramp; installing an offset p-trap; a visit to a glass-blowing studio; grab bar installation begins.14Lexington: All in the FamilyLandscape planting begins with screen trees and rose bushes; the children pitch in on a painting project; the homeowners discuss Duchenne muscular dystrophy; a modern staircase is installed in the foyer.15Lexington: Judgement DayGeothermal is in; kitchen appliances are installed; the new HERS score is revealed.16Lexington: Accessible Made ModernThe completed renovation of the 1960 mid-century modern home accommodates a family of five, including a child with Duchenne muscular dystrophy; the crew returns to go through the changes with the family.17Glen Ridge: Multi-GenerationalThe crew heads to New Jersey for the second project of the season - an 1897 Victorian in the Borough of Glen Ridge that's being renovated for multi-generational living. The homeowners give the crew a tour and explain how the new spaces will be used.18Glen Ridge: VintageDemo has begun uncovering 150-year-old wine bottles in the walls. A chimney is demolished, and the roof is reframed. The architect shares his inspiration for the project, and the mayor gives a tour of the Borough's gas lamps. Asbestos is abated.19Glen Ridge: Small But MightyTermite damage has caused major construction changes. New footings are needed in the basement. A historic community garden is toured. A 15-year-old student talks about working on the project. The old sewer line is replaced without trenching.20Glen Ridge: QR ConstructionInstalling helical piers for the new porch; prepping new windows for installation; protecting plumbing pipes from cold weather.21Glen Ridge: Roughed InThe new flangeless windows are installed water and air tight. Preparation begins for in-ceiling speakers. The Empire State Building is visited. Porch decking is installed to minimize waste, and a hybrid plumbing system is chosen for the house.22Glen Ridge: Next Level TightAir tightness is taken to the next level with vapor barrier electrical boxes. The homeowner designs a custom lead glass sidelight. Various types of weather-resistant barriers are explored. Drip edge flashing and exterior window trim are installed.23Glen Ridge: A Breath of Fresh AirThe new staircase is manufactured in a shop and assembled on-site. The shop is toured. The homeowner installs a new brick walkway. Wood fiber insulation and the new HRV system are explored. The architect talks about the interior trim details24Glen Ridge: Tested and ApprovedA blower door test reveals the home's airtightness; a baseboard trim gets a radius detail; discussing the borough's effort to maintain its tree-lined streets; installing a prefab tile niche; prepping interior trim for paint finish.25Glen Ridge: Spring ForwardBuilding a custom mudroom bench from reclaimed wood; the primary bathroom gets a custom paint finish; spring landscaping; installing kitchen crown molding above the cabinets and recessed lighting.26Glen Ridge: Next Generation VictorianRenovation of the 1887 Victorian is completed; the builder installs the custom lead glass sidelight; the crew gets a tour from the homeowners.Season 18Season 19Season 20Season 21Season 22Season 23Season 24Season 25Season 26Season 27Season 28Season 29Season 30Season 31Season 32Season 33Season 34Season 35Season 36Season 37Season 38Season 39Season 40Season 41Season 42Season 43Season 44Season 46Season 47Season 48