Hartz Avenue and the older houses
John Hartz subdivided lots east of the railroad station in the late 1800s, and Hartz Avenue replaced Front Street as the town's center. Houses near it are among the oldest. They carry layers, patched flashing and chimney bases that have been resealed several times. We count layers at the eave. California Building Code does not allow a new covering over two or more.

Large-lot subdivisions from the 1980s and 1990s
Those streets are the bulk of the Town's housing, and most carry tile. Tile roofs rarely fail in the tile. They fail underneath, where the underlayment dries out and water gets past it at valleys, vents and walls. Repairs there mean lifting tile, replacing underlayment in a limited area and resetting the tile. The estimate separates a local fix from a larger replacement so you see the difference in scope.
Roofing services for Danville homes
- Roof Replacement
Older houses near Hartz Avenue often carry more than one layer, and California Building Code bars a covering over two. A tear-off exposes the decking, and aged boards are explained and photographed before work continues.
- Roof Repair
Cracked tiles, failed vent flashing and dry-rotted underlayment edges are repaired by section where decking is sound. The estimate shows the repaired area so you can see what the fix does and does not reach.
- Skylights
Large-lot homes of that era often have skylights, and curb flashing is resealed first where the unit is sound. A worn skylight is replaced with the reroof so the new flashing ties into the finished roof.
- Emergency Roof Repair
A leak is sealed first, and the I-680 trip is described honestly before you book. Commute traffic changes the arrival, so you get a visit window and a clear account of what can be sealed on the first visit.
- Tile Roofing
A tile roof's underlayment ages out before the tile does, so replacement is planned around reuse or new tile. We lift sample tiles to read the felt, then price a reset and a new covering as separate options.
- Gutters
Large lots under mature trees and long valleys send leaves into gutters. Size, pitch and downspout discharge are checked with the roof, so water reaches the ground away from the foundation.
- Roof Inspection
A photographed inspection of tile, valleys and vents shows whether a stain means a local repair or tired underlayment, and gives you one set of facts to hold against every bid.

Shade, leaves and long valleys
Large lots mean mature trees, and big roofs mean long valleys that collect debris. A packed valley holds water against the shingle edge and speeds wear. Part of any inspection is clearing the valley, looking at what is underneath and checking that gutters and downspouts carry water away from the foundation. If you are comparing bids, make sure each one covers the same valleys and flashing.
Tao House, the Las Trampas hills and hillside lots
The Eugene O'Neill National Historic Site preserves Tao House, where the playwright lived on Kuss Road in the Las Trampas Hills from 1937 to 1944 (National Park Service). It is a reminder that hillside homes above Danville have a long history, and hillside lots bring their own roof questions: steeper runoff, wind at the ridgeline and shade from mature trees.
On a sloped lot, ask three things before collecting bids. Where does each downspout discharge, and does it send water toward the foundation? Which slope stays shaded and damp, and does moss grow there? And which roof planes have valleys long enough to catch leaves? Each bid should address those answers, and our estimate lists them by roof section.

A Town's permit office
Danville is a Town, and the Town's building department issues roof permits. Our estimate names who pulls yours, and you should confirm that with the Town before signing.
How a visit goes
You call the Webster St office. A window is set that allows for I-680 traffic. An inspector, often Wayne or Pedro, photographs the roof and the attic if reachable. A detailed written estimate follows. During work, updates reach you by text or email. Alamo and San Ramon are on the same corridor.

