Since the park, off Alberta Avenue for more than 30 years, was sold to Dubrovnik Properties, LLC in July of 2004, the numbers have dwindled. Today, there are fewer than a dozen, and they may be gone soon too.

Many residents left before Aug. 1, to take advantage of monetary benefits from the park's owners, who are hoping to build homes on the property.

While many residents chose to take the money Dubrovnik offered, some are holding out to prepare a lawsuit.

Those who moved received $22,500 for their mobile home units, $2,765 in relocation benefits and a $5,515 bonus if they left within 45 days of the approval of the Conversion Impact Report. Aug. 1 was the cutoff date for the full benefit. From then, until Feb. 1, the bonus is offered at progressively smaller amounts.

Irene Dulfer, president of the Oasis Mobile Manor Homeowners Association, said the group planned to sue Dubrovnik for failure to maintain the park.

Even before the company took over ownership, the park was falling into disrepair. Many units were dirty and rusting; the pool was full of dirt, and dried plants and weeds lined the narrow streets.

Dulfer said she and the others remaining in the park will sue after they get their relocation money.

Dubrovnik has already gone beyond municipal code requirements for compensation.

While Sunnyvale Municipal Code only requires the owners to pay 85 percent of the appraised value--which was as low as $7,500 for some units--they agreed to pay $22,500 per unit or more if appraised higher, plus all the relocation benefits.

But there has been disagreement between the residents and the owners over appraisal value. Centex Homes--which is set to purchase the property from Dubrovnik in order to redevelop it--hired one appraiser, and the residents hired their own. In some cases, the difference in appraisal value for some of the remaining homes has been almost $15,000.

Dulfer said her home was appraised by her appraiser at $44,000, while Centex's came up with $30,000.

Municipal code section 19.72.060 says the two parties must mutually agree upon a third appraiser whenever the difference is more than 15 percent of the value. If they cannot agree on a third appraiser, a superior court judge for Santa Clara County will chose one.

The two sides also have the option to work out the difference on their own, as Centex project manager Jeff Jacobs said has happened in a few cases. He said that some residents have agreed with Centex to simply "split the difference" between the two values.

Dulfer said Centex has skipped the mutual-choice step and gone right to asking a judge to select an appraiser. Jacobs said his company went to the courts because the two sides were already disagreeing, and Centex wanted an objective third party to select the appraiser.

Now that most residents who want to leave have left, Dulfer said the homeowners association plans to move forward with its lawsuit, but could not discuss details.