Patio Drainage at Treasure Isle HOA

Treasure Isle Owners and Residents,

This rain we’re having is like a double-edged sword.  On one hand, it’s wonderful to get all this badly needed rain. One hopes it will help the State’s water resources after several years of drought.  On the other hand, because there’s so much water, it flows into unwanted areas.

There are two types of drainage systems for the rear yards/patios at Treasure Isle.

End Homes

The drainage for the end home patios is under the corner of the patio fence. The soil surface was originally [1974/1975] slopped toward the fence corners. Many owners/residents subsequentially planted shrubbery or trees in those corners, built planters along the bottom of the fences, installed wooden decks, pavers or concrete, etc. to beautify their yards. These sorts of beautification interrupted the natural slope thus preventing rainwater from draining out of the patio. The extra water backs up and eventually flows over the patio/garage door threshold into the garage.

Re-establishing the patio drainage is the homeowner’s responsibility. Contact the managing agent, Dan James if, during making those corrections, work is needed on the outside of the patio fence in the common area to restore the drainage.

One source of expert help is to google “landscape drainage contractors in San Mateo County.”

Interior Homes

The rear patios/yards of the interior homes originally sloped to the drainpipe running from the patio under the garage floor to the street allowing water to flow into the street.  As described in the “End Homes,” the slope to many of the drains has been interrupted forcing the extra water over the patio/garage door threshold into the garage. 

It’s easy to find the location of the drainpipe by standing outside the garage and finding the 2” hole on one side of the garage or the other.  Find the other end of this hole inside the rear yard.  The drain can be cleaned by inserting a garden hose into the hole and turning on maximum water pressure to remove any debris.

In either case, it is always a good idea to raise everything stored in the garages on blocks an inch or two high. This is a good idea for storing anything on any concrete floor.

CC&R Section 9.4.1 (iii) “Maintenance of Lots,” makes the owner responsible for the patio drains[1].  Contact Dan James [mulqueeney@sbcglobal.net] for a complete copy of the CC&Rs.

Dan James

Managing Agent


[1] “9.4.1 Maintenance of Lots. Except to the extent that Maintenance, Repair, or Replacement of any improvement on a Lot is expressly and clearly made the responsibility of the Association, each Owner shall be responsible for the Maintenance, Repair, and Replacement of his or

her Lot and all improvements thereon in good condition, including, without limitation, the following: (i) fireplace flues, chutes and chimneys; (ii) skylights and sun tunnels; (iii) decks, patios and patio drains; (iv) air-conditioning, heating equipment, water heater and water heater drain, dryer vent and stove/oven vent; (v) solar devices; (vi) all glass, including window panes and frames and sliding glass doors and their frames; (vii) roof framing; (viii) properly secured door and window screens, door locks, deadbolt locks, strike plates; (ix) interiors of garages; (x) automatic garage door openers; (xi) trees, shrubs and other landscaping in rear yards, front and side patio areas; (xii) sewer laterals running under the Common Area connecting to the six inch (6) sewer main and sump pumps; and (xiii) water pipes running under the Common Area connecting to the water meter including the angle valve connected to the front or commercial side of water meter.”

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