Home Improvement Contractors in Redmond, WA
Most of Redmond's single-family houses were built between the 1970s and the early 2000s, in planned subdivisions on Education Hill, in Grass Lawn and across North Redmond. Those houses are now replacing their original roofs, siding, windows and decks at about the same time, and many sit inside HOAs and near the streams that run through the city.
Redmond housing and what it needs
| Area | Houses | What projects tend to involve |
|---|---|---|
| Education Hill, Grass Lawn, Willows/Rose Hill | 1970s – 1990s two-stories and split-levels | Siding and window replacement, deck replacement, kitchen updates |
| Overlake, Idylwood, Viewpoint | 1960s – 1980s ramblers and daylight basements | Foundation and drainage, remodels, seismic upgrades |
| North Redmond, English Hill, Bear Creek | 1990s – 2000s larger homes | Roof replacements, outdoor rooms, ADUs |
| Downtown and Sammamish Valley | Older homes and newer townhomes | Small-lot projects, condo and HOA rules |
Redmond's building department
Redmond's Development Services Center reviews residential permits, applied for through the regional MyBuildingPermit portal. Additions, structural remodels, raised and covered decks and ADUs need building permits; trade permits are pulled by the trades.
Redmond rules that shape projects
- Streams and wetlands. Bear Creek, Evans Creek and the Sammamish River and their tributaries carry buffers that limit building and footings on many lots.
- Aquifer protection. Parts of Redmond lie in critical aquifer recharge areas around the city's drinking-water wells, which add rules for some excavation, drainage and chemical use.
- Trees. Significant trees are protected, and removal generally requires replacement.
- HOAs. Many subdivisions require architectural approval of exterior materials, colors, decks and fences.
Guides for Redmond projects
Redmond homeowner questions
Why does everything on my 1990s house seem to fail at once?
Roofs, siding, windows and decks from the same build year reach the end of their lives together. Planning them as one sequence saves on scaffolding and flashing.
Do I need HOA approval as well as a permit?
Often, yes. They are separate approvals, and both may apply.
How do I check whether my lot has a stream buffer?
Redmond's online maps show critical areas by parcel.
What is a critical aquifer recharge area?
Land that feeds the city's drinking-water wells. Projects there can have extra rules for excavation and drainage.





