Free Estimate
Licensed Oregon Contractor · CCB #255962
The Generational Living Builder for Gresham and East Portland
ADUs, aging-in-place remodels, downsizing homes, and cottage clusters.
Free Estimate
ADUs, aging-in-place remodels, downsizing homes, and cottage clusters.
Gresham's ADU, aging-in-place, and cottage cluster builder. One team designs, permits, and builds the whole project.
Aging-in-place remodels, ADUs, and downsizing homes for families in Gresham and east Portland.
Walk-in showers, ramps, wider doorways, and main-floor bedrooms. We make the home you have comfortable for the years ahead.
Learn MoreDetached ADUs, in-law suites, and garage conversions in Gresham and Portland.
Learn MoreA smaller home on one level, next to the people you want close.
Learn MoreA parent's own front door, their own kitchen, and grandchildren across the lawn. We design every ADU for the years ahead, and it stays in the family as part of the property.
"I can sell the house I'm in now, build a little unit, be around my kids, and pass something on to them."What Joel hears from homeowners in their seventies
Oregon's middle-housing law allows duplexes, fourplexes, townhouses, and cottage clusters on residential lots in Gresham. GenTerra built the first cottage cluster the city approved.
Joel Kastel has been a general contractor for thirty years in California and Oregon and worked on the city side of permitting before starting GenTerra. He handles the zoning, plan review, and inspections on every project himself.
GenTerra grew out of Brace Investments, where Joel and his partner Andra Fletcher bought and renovated run-down houses across the Portland area.
What goes into the price, which parts cost the most, and how you get a written number for your lot.
Read the cost guideThe three ADU types, Gresham's size limits, and Oregon's rules on parking and owner occupancy.
Read the rules guideCall or send the address. A site visit tells you what you can build on your lot.